RESUMO: Este estudo teve como objetivo avaliar o impacto da silagem de ração total de Megathyrsus maximus colhido com 70 cm de altura e concentrado no momento da silagem ou ração total de capim cortado a 70 cm, composta por Megathyrsus maximus colhido com 70 cm de altura (nos Exp. I e III) e silagem de ração total cortada a 130 cm, composta por Megathyrsus maximus colhido com 130 cm de altura e concentrado no momento da silagem ou ração total de Megathyrsus maximus colhido a 130 cm de altura (nos Exp. II e IV), sobre o metabolismo ruminal, a digestibilidade dos nutrientes, e o desempenho e as características de carcaça de cordeiros confinados. Os resultados mostraram que TMRS70 aumentou o pH ruminal no Exp. I, e TMRS130 exibiu maior digestibilidade do extrato etéreo, concentração de propionato e menor razão acético/propionato e pH ruminal em comparação com TMR130 no Exp. II. Nos Exp. III e IV, não houve efeito significativo sobre o desempenho e a qualidade da carcaça. No entanto, no Exp. IV, TMRS130 levou a uma diminuição no consumo de matéria seca e no ganho médio diário, enquanto cordeiros alimentados com TMR130 mostraram uma maior área de olho de lombo. A ensilagem da ração total poderia ser usada como um método de conservação para gramíneas jovens (70 cm) sem prejudicar o desempenho, metabolismo, carcaças e qualidade da carne. No entanto, recomenda-se mais estudos avaliando a análise econômica da alimentação com ensilagem de ração total (70 cm) em vez de ração totalmente misturada como método de conservação de forragem. RESUMO 7 nos Exp 13 IV , IV) nutrientes confinados TMRS TMRS7 TMRS13 etéreo acéticopropionato acético TMR TMR13 entanto diário lombo (7 carne recomendase recomenda se forragem 1 TMRS1 TMR1 (

ABSTRACT: This study assessed the impact of total mixed ration silage of Megathyrsus maximus harvested with 70 cm composed of Megathyrsus maximus harvested at 70 cm in height and concentrate at the time of silage or total mixed ration of grass cut at 70 cm composed of Megathyrsus maximus harvested with 70 cm in height (in Exp. I and III) and total mixed ration silage cut at 130 cm composed of Megathyrsus maximus harvested 130 cm height and concentrate at the time of silage or total mixed ration of Megathyrsus maximus harvested with 130 cm composed of Megathyrsus maximus harvested at 130 cm height (in Exp. II and IV), on rumen metabolism, nutrient digestibility, and the performance and carcass characteristics of feedlot lambs. The results showed that TMRS70 increased ruminal pH in Exp. I and TMRS130 exhibited higher ether extract digestibility, propionic concentration, and lower acetic to propionic ratio and ruminal pH compared to TMR130 in Exp. II. In Exp. III and IV, there was no significant effect on the performance and quality of the carcass. However, in Exp. IV, TMRS130 led to decreased dry matter intake and average daily gain, while lambs fed with TMR130 showed a higher rib-eye area. Total ration ensilage could be used as a conservation method for young grasses (70 cm) without impairing performance, metabolism, carcasses, and meat quality. However, further research is recommended to evaluate the economic analysis of feeding total ration ensilage (70 cm) instead of total mixed ration as a forage conservation method. ABSTRACT 7 Exp 13 IV , IV) metabolism digestibility TMRS TMRS7 TMRS13 concentration TMR TMR13 However gain ribeye rib eye area (7 carcasses 1 TMRS1 TMR1 (

Abstract The objective was to evaluate the effect of various castration protocols through a meta-analysis of indicators of daily feed intake, feed conversion, daily weight gain, slaughter weight, hot carcass weight, and carcass yield. 179 publications from three electronic sources (Scopus, PubMed, and Web of Science) were reviewed over a 24-year period, out of which the 26 studies that met the inclusion criteria were selected. The effect was analyzed with six comparisons: C1=surgical castration vs whole; C2=standard immunocastration vs whole; C3= standard immunocastration vs surgical castration; C4= alternative immunocastration vs whole; C5= alternative immunocastration vs surgical castration, and C6= alternative immunocastration vs standard immunocastration. Averages were estimated for feed intake (kg) (0.23, 0.23, -0.05, 0.32, 0.11, -0.09), feed conversion (kg:kg) (0.27, 0.05, -0.16, 0.11, 0.11, 0.11, -0.19), daily weight gain (g) (-9. 54, 39.08, 40.70, 107.63, -53.0, 69.14), carcass weight (kg) (-9.54, 39.08, 40.70, 107.63, -53.0, 69.14), and hot carcass weight (kg) (1.23, 0.85, 0.46, 1.03, 1.02, -0.42) respectively. The indicators of feed consumption, feed conversion, daily weight gain, slaughter weight, and hot carcass weight proved different (P<0.05); only the carcass yield variable exhibited no difference (P>0.05). The conclusion is that immunocastration improves performance in production and carcass indicators; surgical castration improves carcass yield; whole pigs have better feed conversion, and standard and alternative immunocastration differ in their response in terms of production and carcass measurement indicators.

Resumen El objetivo fue evaluar el efecto de los diferentes protocolos de castración por medio del meta-análisis de los indicadores del consumo diario de alimento, conversión alimenticia, ganancia diaria de peso, peso al rastro, peso de la canal caliente y rendimiento de la canal. Se revisaron 179 publicaciones de tres fuentes electrónicas (Scopus, PubMed, Web of Science) en un periodo de 24 años, de las cuales se seleccionaron los 26 estudios que cumplieron con los criterios de inclusión. El efecto se analizó con seis comparaciones: C1=castración quirúrgica vs enteros; C2=inmunocastración estándar vs enteros; C3= inmunocastración estándar vs castración quirúrgica; C4= inmunocastración alternativa vs enteros; C5= inmunocastración alternativa vs castrados quirúrgicamente; y C6= inmunocastración alternativa vs inmunocastración estándar. Las medias obtenidas fueron de consumo de alimento (kg) (0.23, 0.23, -0.05, 0.32, 0.11, -0.09), de conversión alimenticia (kg:kg) (0.27, 0.05, -0.16, 0.11, 0.11, -0.19), ganancia diaria de peso (g) (-9.54, 39.08, 40.70, 107.63, -53.0, 69.14), peso de la canal (kg) (-9.54, 39.08, 40.70, 107.63, -53.0, 69.14), y peso de la canal en caliente (kg) (1.23, 0.85, 0.46, 1.03,1.02, -0.42) respectivamente. Los indicadores de consumo de alimento, conversión alimenticia, ganancia diaria de peso, peso al rastro y peso de la canal caliente fueron diferentes (P<0.05); solo la variable de rendimiento de la canal no mostró diferencia (P>0.05). Se concluye que, la inmunocastración mejora el desempeño en indicadores productivos y de la canal, la castración quirúrgica mejora el rendimiento de la canal, los cerdos enteros tienen mejor conversión alimenticia, y la inmunocastración estándar y alternativa difieren en su respuesta en indicadores de producción y medición de la canal.

Abstract Local brewery byproducts such as atella and tata, resulting from several fermented beverages, are used as animal feed in Ethiopia. However, there is no sufficient information on the nutritional value of those feed resources for animals. The objective of this study was to evaluate the effects of supplementing local brewery by-products on feed intake, body weight change, and economic profitability of Woyto-Guji goats fed on hay. Twenty-four yearling intact Woyto-Guji male goats were used. The experiment was conducted using a completely randomized block design. The goats were blocked into six groups of four animals based on initial body weight and randomly assigned to four different dietary treatments: hay alone (T1); hay combined with atella (T2); hay combined with tata (T3); and hay combined with an atella-tata mixture (1:1) (T4). The crude protein content of hay, atella, tata, and the atella-tata mixture used in this study were 7.35, 18.47, 17.51 and 17.86%, respectively. Dry matter intakes of 564.56 (T1), 810.27 (T2), 850.37 (T3), and 945.85 (T4) g/day, and crude protein intakes of 45.27 (T1), 104.18 (T2), 103.79 (T3), and 112.96 (T4) g/day were recorded. Total body weight gains were 2.76, 8.03, 6.15 and 9.72 Kg for the same treatments, respectively. Atella and tata, either supplemented alone or combined, increased body weight. The highest body weight gain was recorded in goats fed atella-tata mixture. All treatments had a positive net return.

Abstract Arthralgex is a proprietary polyherbal preparation used in clinics to treat rheumatoid arthritis for decades. Its safety evaluation has not been reported. The study is aimed at evaluating the safety of arthralgex using Wistar rats, as per OECD guidelines. According to OECD 407, rats of either gender were separated into six groups (n= 6 each). The dose of arthralgex was decided based on an acute toxicity study. Under the treatment group, separate set of rats received arthralgex in three dose levels like - low, medium, and high (200, 400 & 800 mg/kg/day; p.o for 28 days). Satellite groups received high dose (800 mg/kg/day, p.o for 28 days), and control group received equal volume of vehicle. On day 28, blood samples were collected to estimate hematology and biochemistry parameters. Subsequently, rats were euthanized to collect organs for weighing and histopathology. Satellite groups were maintained for an additional 14 days post-treatment to assess toxicity reversibility and euthanized on day 43. Arthralgex did not show any signs of toxicity or major change in body weight in the acute toxicity study. Arthralgex has no significant adverse effect on general health status as confirmed by body weight, feed intake, hematology, biochemistry, urine analysis, internal organs, relative organ weight, and histopathological evaluation after 28 day treatment. Arthralgex could be considered safe for short-term treatment. Present findings may help researchers in dose fixing for sub-chronic and chronic toxicity studies, which is essential for safety evaluation for long-term use. decades reported guidelines 407 n= n (n each. each . each) low medium 200, 200 (200 40 80 mg/kg/day mgkgday mg kg po p o 2 days. days) (80 days, , vehicle parameters Subsequently histopathology 1 posttreatment post 43 intake analysis shortterm short term subchronic sub studies longterm long use 20 (20 4 8 (8 (2 (

Resumo Arthralgex é uma preparação poli-herbal patenteada usada em clínicas para tratar a artrite reumatoide há décadas. Sua avaliação de segurança não foi relatada. O estudo tem como objetivo avaliar a segurança do arthralgex em ratos Wistar, conforme diretrizes da OCDE. De acordo com a OCDE, 407 ratos de ambos os sexos foram separados em seis grupos (n = 6 cada). A dose de arthralgex foi definida com base num estudo de toxicidade aguda. No grupo de tratamento, um conjunto separado de ratos recebeu arthralgex em três níveis de dose: baixo, médio e alto (200, 400 e 800 mg/kg/dia, respectivamente, por via oral, por 28 dias). Os grupos satélites receberam altas doses (800 mg/kg/dia, por via oral, por 28 dias), e o grupo controle recebeu igual volume. No dia 28, foram coletadas amostras de sangue para estimar parâmetros hematológicos e bioquímicos. Posteriormente, os ratos foram eutanasiados para coletar órgãos para pesagem e histopatologia. Os grupos satélites foram mantidos por mais 14 dias após o tratamento para avaliar a reversibilidade da toxicidade e sacrificados no dia 43. Arthralgex não mostrou quaisquer sinais de toxicidade ou alteração importante no peso corporal no estudo de toxicidade aguda. Arthralgex não tem efeito adverso significativo no estado geral de saúde, conforme confirmado pelo peso corporal, ingestão de ração, hematologia, bioquímica, análise de urina, órgãos internos, peso relativo dos órgãos e avaliação histopatológica após 28 dias de tratamento. Arthralgex pode ser considerado seguro para tratamento de curto prazo. As descobertas atuais podem ajudar os pesquisadores na fixação de doses para estudos de toxicidade subcrônica e crônica, o que é essencial para avaliação de segurança para uso a longo prazo. poliherbal poli herbal décadas relatada Wistar OCDE 40 n cada. cada . cada) aguda baixo 200, 200 (200 80 mgkgdia mg kg mg/kg/dia respectivamente oral 2 dias. dias) (80 dias, , volume bioquímicos Posteriormente histopatologia 1 43 saúde ração hematologia bioquímica urina internos prazo crônica 4 20 (20 8 (8 (2 (

Resumo A salinidade é um dos parâmetros ambientais mais críticos em relação à fisiologia dos peixes, modificando a ingestão de alimentos e o desempenho de crescimento em muitas espécies. O presente estudo investigou os efeitos de diferentes níveis de salinidade no desempenho de crescimento, alimentação e sobrevivência de jovens espécies de robalos asiáticos Lates calcarifer, as quais foram criadas sob salinidade 0 (T1), 5 (T2), 22 (T3), 36 (T4) e 42 (T5) ppt. Aproximadamente 830 indivíduos de peixes com peso médio de 1,24 ± 0,52 g foram distribuídos aleatoriamente (166 peixes / tanque) em cinco tanques de concreto (cada tanque tinha 30 × 6 × 4 pés (9,1 x 1,8 x 1,2 metros), com volume de 19,12 litros) por 40 dias. Os peixes foram inicialmente alimentados com uma dieta contendo 42% de proteína bruta a uma taxa de 6% do seu peso corporal por dia. Os resultados mostraram que o nível de salinidade teve um efeito significativo no ganho de peso (GP), ganho de peso médio diário (GPMD), taxa de crescimento específico (TCE), taxa de conversão alimentar (TCA), taxa de sobrevivência (TS), biomassa total e índices de saúde (p < 0,05). O maior GP (39,11 ± 1,49 g), GPMD (1,00 ± 0,12 g), TCE (8,74 ± 0,03% d-1) e o menor TCA (0,96 ± 0,20) foram observados com o tratamento T3, que foi significativamente superior em comparação com os outros tratamentos (p < 0,05). Entre os índices de saúde, os maiores índices hepatossomáticos e viscerossomáticos foram encontrados no tratamento T3, significativamente superior do que os demais grupos (p < 0,05). Não foram encontradas diferenças significativas entre os tratamentos quanto à TS (p > 0,05), mas a TS máxima (98,89 ± 0,0%) foi observada nos tratamentos T3 e T2. O nível máximo de proteína bruta (19,99 ± 1,4%) foi encontrado na composição bioquímica dos corpos dos jovens robalos asiáticos no grupo T3. A regressão polinomial de segunda ordem mostrou que a salinidade de 20 ppt é ótima para o melhor crescimento do robalo asiático. Assim, o presente estudo recomenda salinidade de 20 a 36 ppt para o cultivo comercial de robalo asiático em sistema de aquicultura fechado.

Abstract Salinity is one of the most critical environmental parameters regarding fish physiology, modifying food intake and growth performance in many fish species. The present study has investigated the effects of different salinity levels on growth performance, feeding and survival of Asian seabass Lates calcarifer juveniles. Asian seabass juveniles were reared at 0 (T1), 5 (T2), 22 (T3), 36 (T4), and 42 (T5) ppt salinity. Approximately eight hundred thirty fish individuals with an average weight of 1.24±0.52 g were randomly distributed (166 fish/Tank) in 5 concrete tanks (each tank 30×6×4 ft, volume 19,122 L) for forty days. Juveniles were initially fed 42% crude protein-containing diets at a rate of 6% of their body weight per day. The results showed that salinity level had a significant effect on the weight gain (WG), average daily weight gain (ADWG), specific growth rate (SGR), feed conversion ratio (FCR), survival rate (SR), total biomass and health indices (p<0.05). The highest WG (39.11±1.49 g), ADWG (1.00±0.12 g), SGR (8.74±0.03% d-1) and lowest FCR (0.96±0.20) were observed with T3 treatment, which was significantly higher compared to other treatment groups (p<0.05). Among the health indices, the highest hepatosomatic index and viscerosomatic index were found with T3 treatment, significantly higher than the other groups (p<0.05). No significant differences were found among the treatments in terms of survival rate (p>0.05), but the maximum survival rate (98.89±0.0%) was observed in the T3 and T2 treatments. The maximum level of crude proteins (19.99±1.4%) was found in the whole-body biochemical composition of Asian seabass juveniles in the T3 treatment group. The second-order polynomial regression showed that 20 ppt salinity is optimum for the best growth of Asian seabass. Thus, the present study recommends 20 to 36 ppt salinity for the commercial farming of Asian seabass under a closed aquaculture system.

Resumo O uso de fontes nutricionais alternativas é um tópico importante para a produção animal, como a avicultura. Este estudo examinou o efeito da substituição do farelo de soja por farelo de folha de girassol na dieta de frangas marrons barbeadoras poedeiras. Um total de 30 aves poedeiras foram designadas a três tratamentos de 0% (como grupo controle), 10% e 15% de inclusão MSFLM. Quatro ovos por repetição foram retirados aleatoriamente por três dias consecutivos em intervalos de duas semanas por cinco vezes, e indivíduos de 18 semanas foram selecionados após 40 dias do tempo experimental. Parâmetros externos dos ovos (peso do ovo, comprimento do ovo, largura do ovo e índice de forma do ovo, espessura da casca) e parâmetros corporais (peso corporal final, ganho de peso), consumo de ração e produção diária da galinha foram medidos. Para comprimento do ovo, largura do ovo e espessura da casca apresentaram diferença significativa (p <0,05) nas aves controle. Peso corporal final, ganho de peso, consumo de ração e produção de dia de galinha mostraram resultados comparáveis com valores de ovos de aves em dieta controle. O estudo revelou a capacidade das aves de utilizar facilmente os nutrientes das fontes de proteína. A utilização de MSFLM até 15% na dieta das frangas não revelou nenhum efeito prejudicial no desempenho das aves poedeiras e nas qualidades externas dos ovos produzidos.

Abstract The use of alternative nutritional sources is an important topic for animal production such as poultry. This study examined the effect of replacing soybean meal with sunflower leaf meal in the diet of laying shaver brown pullets. A total of 30 laying birds were assigned to three treatments of 0% (as control group), 10% and 15% MSFLM inclusion. Four eggs per replicate were randomly taken for three consecutive days at two weeks interval for five times, and 18 weeks individuals were selected after 40 days of experimental time. External parameters of the eggs (egg weight, egg length, egg breadth and egg shape index, shell thickness), and body parameters (Final body weight, weight gain), feed intake and hen day production were measured. For egg length, egg breadth and shell thickness showed significant difference (p< 0.05) in from the control birds. Final body weight, weight gain, feed intake and hen day production showed comparable results with values from eggs of birds on control diet. The study revealed the ability of birds to easily utilize the nutrients in the protein sources. MSFLM utilization up to 15% in pullets’ diet revealed no detrimental effect on the performance of the laying birds and the external qualities of eggs produced.

Resumo Frangos de corte Hubbard com 320 dias de idade foram alocados aleatoriamente em quatro tratamentos (8 repetições, 10 aves/curral) e foram criados em condições de manejo padrão. As aves do primeiro grupo serviram como controle e foram alimentadas com uma dieta à base de milho, enquanto as aves dos três grupos restantes, ou seja, A, B e C, foram alimentadas com dieta basal suplementada com nanopartículas de cobre (CuNP) a 5, 10 e 15 mg/kg de dieta, respectivamente, por 35 dias. A suplementação de CuNP aumentou linearmente (P ≤ 0,05) o peso corporal (PC), o ganho de peso médio diário (GPDA) e o consumo de ração (FI) em frangos de corte. O ácido úrico, os níveis de glicose no sangue e a conversão alimentar (TCF) reduziram linearmente (P ≤ 0,05) com a suplementação de CuNP na dieta. A suplementação de CuNP na dieta também aumentou linearmente (P ≤ 0,05) peso, comprimento, diâmetro, índice peso/comprimento (P/L) e índice tibiotársico (índice TT) da tíbia. A inclusão de CuNP na dieta de frangos de corte aumentou linearmente os parâmetros medidos de músculo, ou seja; pH, diâmetro da fibra, área da seção transversal da fibra, diâmetro do fascículo, área da seção transversal do fascículo (P ≤ 0,05). A concentração de cobre, ferro, cálcio e fósforo no sangue também aumentou linearmente (P ≤ 0,05) com a suplementação de CuNP. No geral, CuNP afetou positivamente o desempenho de crescimento, características histológicas dos músculos, resistência óssea e metabólitos séricos em frangos de corte.

Abstract Three hundred and twenty day old Hubbard broilers were randomly allocated to four treatments (8 replicates, 10 birds/pen) and were raised under standard management conditions. Birds in the first group served as control and were fed a corn based diet, while birds in the remaining three groups i.e.; A, B and C were fed with a basal diet supplemented with copper nanoparticles (CuNP) at 5, 10 and 15 mg /kg of diet respectively for 35 days. Supplementation of CuNP linearly increased (P≤0.05) body weight (BW), average daily weight gain (ADWG) and feed intake (FI) in broilers. Uric acid, glucose levels in blood and feed conversion ratio (FCR) reduced linearly (P≤0.05) with CuNP supplementation in diet. Supplementation of CuNP in the diet also linearly increased (P≤0.05) tibia weight, length, diameter, weight/length index (W/L) and Tibiotarsal index (TT index). Inclusion of CuNP in broilers diet linearly increased the measured parameters of muscle i.e.; pH, fiber diameter, fiber cross-sectional area, fascicle diameter, fascicle cross-sectional area (P≤0.05). Concentration of copper, iron, calcium and phosphorous in blood also increased line-arly (P ≤ 0.05) with CuNP supplementation. Overall, CuNP positively affected the growth performance, histological characteristics of muscles, bone strength and serum metabolites in broilers.

Resumo O cálcio (Ca) é um mineral essencial para a formação da casca do ovo e a contração muscular. Sua falta pode resultar em má qualidade do ovo e diminuição da produção de ovos em patas poedeiras. Este estudo tem como objetivo verificar como a adição do mineral Ca em uma ração contendo farinha de cabeça de camarão e cabeça de peixe Bilis afeta o desempenho de postura e a qualidade dos ovos para incubação em patos Mojosari. Um total de 105 patos Mojosari fêmeas e 15 machos, com idade de 78 semanas, foram criados durante três meses e divididos aleatoriamente em 15 bandos (cada bando contendo sete fêmeas e um pato macho). Foram realizados três tipos de tratamento: P0 (controle, sem mineral), P1 (proporção de farinha de cabeça de camarão e cabeça de peixe Bilis 2:1 + 1% mineral) e P2 (relação farinha de cabeça de camarão e cabeça de peixe Bilis 1:2 + 1% mineral). Os resultados revelaram que a adição do mineral Ca à ração, incluindo farinha de cabeça de camarão e cabeça de peixe Bilis, não teve influência significativa (p>0,05) sobre o desempenho de poedeiras em termos de consumo de ração, produção de ovos, peso dos ovos, qualidade dos ovos, patinhos produzidos e renda sobre o custo da ração (IOFC). Além disso, a adição de Ca na ração não resultou em aumentos substanciais (p>0,05) em fertilidade e eclodibilidade, ou características de tamanho dos ovos. Com base nos resultados deste estudo, a alimentação com farinha de cabeça de camarão e cabeça de peixe Bilis pode ser usada como uma formulação alternativa de ração livre de cálcio. (Ca muscular 10 1 machos 7 semanas cada macho. macho . macho) tratamento P controle, controle (controle mineral, , proporção 21 2 2: relação 12 1: mineral. p>0,05 p005 p 0 05 (p>0,05 IOFC. IOFC (IOFC) disso eclodibilidade p>0,0 p00 (p>0,0 (IOFC p>0, p0 (p>0, p>0 (p>0 p> (p> (p

Abstract Calcium (Ca) is an essential mineral for eggshell formation and muscle contraction, and a lack of it can result in poor egg quality and decreased egg output in laying ducks. This study aims to see how feeding the mineral Ca in a ration containing Shrimp head meal and Bilis fish head affects the laying performance and quality of hatching eggs in Mojosari ducks. A total of 105 female and 15 male Mojosari ducks, aged 78 weeks, were raised for three months and randomly divided into 15 flocks (each flock containing seven females and one male duck). There were three kinds of treatment, namely P0 (control, without mineral), P1 (ratio of Shrimp head meal and Bilis fish head 2:1 + 1% mineral), and P2 ((ratio of Shrimp head meal and Bilis fish head 1:2 + 1% mineral). The findings revealed that adding mineral Ca to feed, including Shrimp head meal and Bilis fish head, had no significant influence (P>0.05) on laying Mojosari duck performance in terms of feed intake, egg production, egg weight, egg quality, ducklings produced, and income over feed cost (IOFC). Furthermore, Ca addition in the ration did not result in substantial increases (P>0.05) in fertility, hatchability, or egg size characteristics. Based on the findings of this study, feeding ducks with shrimp head meal and Bilis fish head can be used as an alternate calcium-free feed formulation. (Ca contraction 10 1 7 weeks each duck. . duck) treatment P control, control (control mineral, , mineral) ratio 21 2 2: 12 1: mineral. P>0.05 P005 0 05 (P>0.05 intake production weight produced IOFC. IOFC (IOFC) Furthermore fertility hatchability characteristics calciumfree calcium free formulation P>0.0 P00 (P>0.0 (IOFC P>0. (P>0. P>0 (P>0 P> (P> (P

ABSTRACT: When applied at growing phase, lighting program aims to obtain quails with body weight and physiological maturity suitable for the beginning of laying. This study evaluated lighting programs at growing phase on performance, sexual maturity and egg quality of meat quail breeders (Coturnixcoturnix) at laying phase. From 7 to 49 days of age, 300 female meat quails were subjected to three lighting programs (natural, intermittent and continuous), with 5 replicates of 20 birds each. At 49 days of age, 240 quails were transferred to a shed, maintaining the same experimental conditions. Meat quails submitted to continuous and intermittent lighting programs had higher weight of reproductive system and lower ages for first egg production and to reach 50% of egg production (P < 0.05). Quails submitted to natural lighting had lower feed intake from 49 to 70 and 71 to 92 days of age and worse feed conversion up to 114 days of age. Continuous and intermittent lighting programs resulted in more precocious quails compared to natural lighting program. Quails submitted to natural lighting at growing phase presented lower egg production during all periods, not differing for birds submitted to continuous and intermittent programs from the second period (71 to 92 days of age). Intermittent and continuous lighting result in better feed conversion of breeding quails up to 114 days and a higher percentage of laying (49 to 136 days), reducing the number of days to produce the first egg and to reach 50% of laying, in relation to natural lighting. ABSTRACT performance Coturnixcoturnix (Coturnixcoturnix 4 30 natural, (natural continuous, , continuous) 2 each 24 shed conditions 50 P 0.05. 005 0.05 . 0 05 0.05) 9 11 periods (7 age) (4 13 days, days) 3 00 0.0 1 ( 0.

RESUMO: Quando aplicado na fase de crescimento, o programa de luz visa obter codornas com peso corporal e maturidade fisiológica adequados para o início da postura. Este estudo avaliou programas de iluminação na fase de crescimento sobre o desempenho, maturidade sexual e qualidade dos ovos de codornas de corte reprodutoras (Coturnix coturnix) na fase de postura. Durante o período de sete a 49 dias de idade, 300 codornas de corte fêmeas foram submetidas a três programas de iluminação (natural, intermitente e contínuo), com cinco repetições de 20 aves cada. Aos 49 dias de idade, 240 codornas foram transferidas para um galpão, mantendo a mesma distribuição experimental e submetidas às mesmas condições. As aves submetidas aos programas de iluminação contínuo e intermitente na fase de crescimento apresentaram maiores peso relativo do sistema reprodutivo e consequentemente menores idades para produção do primeiro ovo e para atingir 50% da produção de ovos (P < 0.05). As aves que receberam apenas iluminação natural apresentaram menor consumo de ração nos períodos de 49 a 70 e 71 a 92 dias de idade e pior conversão alimentar até 114 dias de idade. Os programas de iluminação contínua e intermitente na fase de crescimento resultaram em codornas mais precoces quando comparados as aves submetidas ao programa de iluminação natural. Codornas submetidas a programa de luz natural na fase de crescimento apresentaram menor produção de ovos durante todos os períodos, não diferindo das aves submetidas a programas contínuos e intermitentes a partir do segundo período (71 a 92 dias de idade). A iluminação intermitente e contínua na fase de crescimento resulta em melhor conversão alimentar de codornas reprodutoras até 114 dias e maior percentual de postura (49 a 136 dias), reduzindo o número de dias para produzir o primeiro ovo e atingir 50% de postura, em relação a iluminação natural.. RESUMO desempenho Coturnix coturnix 4 30 natural, (natural contínuo, , contínuo) 2 cada 24 galpão condições 50 P 0.05. 005 0.05 . 0 05 0.05) 7 9 11 (7 idade) (4 13 dias, dias) 3 5 00 0.0 1 ( 0.

ABSTRACT The aim of this study was to evaluate intake, digestibility and performance in dairy heifers fed diets containing increasing levels of babassu cake (0, 100, 200 and 300 g kg-1 dry matter - DM) as a substitute for sugarcane treated with calcium oxide. Twenty-four heifers with an initial mean weight of 190.8 + 40.8 kg were used, distributed in a completely randomised design. The dry matter intake (DMI), neutral detergent fibre intake (NDFI) and acid detergent fibre intake (ADFI), as %BW and g BW-0.75 , showed an increasing linear response. The organic matter intake (OMI) showed a linear increase of 40 g day-1, 0.017%BW and 0.66 g BW-0.75 for each 10 g kg-1 increase in babassu cake in the diet. The apparent digestibility of the dry matter (ADDM) and organic matter (ADOM) showed a quadratic response (P < 0.05), with a minimum of 493 g kg-1 DM for 150 g kg-1 DM and 526.5 g kg-1 DM for 320 g kg-1 DM as a substitute for the sugarcane, respectively. The final mean weight was not altered, presenting a value of 299.7 + 45.5 kg. Daily weight gain (DWG) showed a quadratic response, with the highest value at a substitution level of 190 g kg-1 DM. The feed conversion rate of the DM was not affected by the addition of babassu cake, with an average of 4.6 + 0.74 kg DM kg-1 in weight gain. Babassu cake can substitute hydrolysed sugarcane in heifer diets up to 300 g kg-1 DM, with the greatest weight gain seen at a substitution level of 190 g kg-1 DM. 0, 0 (0 100 20 30 kg1 1 kg- oxide Twentyfour Twenty four 1908 8 190. 408 40. used design DMI, DMI (DMI) NDFI (NDFI ADFI, ADFI (ADFI) BW BW0.75 BW075 0.75 75 BW-0.7 OMI (OMI 4 day1, day1 day 1, day-1 0017BW 017 066 66 0.6 diet ADDM (ADDM ADOM (ADOM P 0.05, 005 0.05 05 0.05) 49 15 5265 526 5 526. 32 respectively altered 2997 299 7 299. 455 45 45. DWG (DWG 19 46 6 4. 074 74 0.7 ( 2 3 (DMI (ADFI BW0 BW0.7 BW07 075 BW-0. day- 01 06 0. 00 0.0 52 29 07 BW0. BW-0 BW-

ABSTRACT The use of non-conventional feeds in poultry farming can reduce production costs, mainly because of its low cost, availability and chemical composition. Thus, parboiled whole rice bran (PWRB) appears as a potential use in feeding quails. Two experiments were carried out to evaluate the effects of the inclusion of PWRB in the diet of quails. In each experiment, a total of 288 seven-day-old European quails of both sexes, were distributed in a completely randomized design with six treatments and six replicates of eight quails each. The treatments consisted in the inclusion of PWRB in the proportions of 0; 5; 10; 15; 20 and 25% (first) and 0; 8; 16; 24; 32 and 40% (second). In the first experiment, a linear reduction in feed intake and weight gain was observed with the inclusion of PWRB above 5%, with no significant effect on feed conversion and carcass characteristics. However, there was no loss in the performance and carcass characteristics of quails fed with different levels of PWRB in comparison to the control group. In the second, it was observed that the inclusion of PWRB above 8% promoted a linear reduction in feed intake, weight gain and improvement in feed conversion, with no significant effect on carcass characteristics. However, quails fed 40% PWRB showed reduced intake and weight gain when compared to the control group. The use of PWRB provided an improvement in economic viability. Considering the effect on growth, PWRB can be used in the feeding of meat quails up to 32%. nonconventional non conventional costs cost composition Thus (PWRB experiment 28 sevendayold seven day old sexes 0 5 10 15 2 25 (first 8 16 24 3 40 second. second . (second) 5% However group viability growth 32% 1 4 (second

ABSTRACT: This study evaluated the effect of dietary supplementation with glutamine and glutamic acid (Gln+Glu) on performance, intestinal morphometry, and carcass characteristics of broiler quails. Eight hundred birds were used, distributed in an entirely randomized design with 20 birds per experimental unit, and given five treatments (0.0; 0.2; 0.4; 0.6; and 0.8% Gln+Glu supplementation) with eight replicates. At 1-21 days of age, lower (P < 0.05) feed intake at 0.6 and 0.8% Gln+Glu supplementation and lower weight gain at 0.8% Gln+Glu supplementation compared to the control treatment were observed. By regression analysis, excluding the control treatment, there was an increasing linear effect (P < 0.05) for feed intake at 22 to 42 days of age. For intestinal morphometry, Gln+Glu supplementation only favored the villus development of the ileum (P < 0.05), giving it greater height at 0.2, 0.6, and 0.8% supplementation. Carcass characteristics, cuts, and edible viscera of the birds at 42 days were not affected (P > 0.05) by Gln+Glu supplementation levels. Thus, the glutamine and glutamic acid supplementation affected the performance and intestinal morphology of 21-d-old quails, decreasing feed intake and weight gain associated with the improvement of ileum morphology; conversely, performance and carcass characteristics at 42 days were not affected by amino acid supplementation. ABSTRACT GlnGlu Gln Glu (Gln+Glu morphometry quails used 2 unit 0.0 00 0 (0.0 0.2 02 0.4 04 4 06 6 08 8 0.8 replicates 121 1 21 1-2 age P 0.05 005 05 0. observed analysis 0.05, , cuts levels Thus 21dold dold d old conversely (0. 12 1- (0 (

RESUMO: Objetivou-se avaliar o efeito da suplementação dietética de glutamina e ácido glutâmico (Gln+Glu) sobre o desempenho, a morfometria intestinal e as características de carcaça de codornas de corte. Foram utilizadas 800 aves, distribuídas em delineamento inteiramente casualizado, com cinco tratamentos (0,0; 0,2; 0,4; 0,6 e 0,8% de suplementação de Gln+Glu) e oito repetições com 20 aves por unidade experimental. Na fase de um a 21 dias, constatou-se menor (P < 0,05) consumo de ração aos níveis de 0,6 e 0,8% de Gln+Glu e menor ganho de peso ao nível 0,8% de Gln+Glu em comparação ao tratamento controle; e, pela análise de regressão, excluindo-se o tratamento controle, houve efeito linear crescente (P < 0,05) para consumo de ração na fase 22 a 42 dias de idade. Para morfometria intestinal, a suplementação de Gln+Glu apenas favoreceu o desenvolvimento vilos do íleo (P < 0,05), conferindo-lhe maior altura aos níveis de 0,2; 0,6 e 0,8% de suplementação. As características de carcaça, cortes e vísceras comestíveis das aves aos 42 dias não foram afetadas (P > 0,05) pelos níveis de suplementação de Gln+Glu. Assim, a suplementação de glutamina e ácido glutâmico influenciou o desempenho e a morfometria intestinal de codornas de corte aos 21 dias de idade, promovendo redução do consumo de ração e do ganho, associado ao aumento morfométrico do íleo; por outro lado, o desempenho das aves e as suas características de carcaça aos 42 dias não foram afetados pela suplementação dos aminoácidos. RESUMO Objetivouse Objetivou se GlnGlu Gln Glu (Gln+Glu 80 casualizado 0,0 00 0 (0,0 0,2 02 2 0,4 04 4 06 6 0, 08 8 0,8 experimental constatouse constatou P 0,05 005 05 controle regressão excluindose excluindo idade 0,05, , conferindolhe conferindo lhe Assim lado aminoácidos (0, (0 (

ABSTRACT: This study evaluated the effect of black wattle (Acacia mearnsii) condensed tannin extract in simple and complex diets for weaned piglets on performance, faecal consistency and serum haptoglobin concentrations. Eighty-eight female and castrated male piglets were used, weaned at 28 ± 3 days old, with an initial body weight of 8.02 ± 1.21 kg, housed in same-sex pairs and distributed in four treatments in a 2 x 2 factorial experiment in a randomised complete block design. The experimental treatments were simple diet (SD), simple diet + tannin (SD+T), complex diet (CD) and complex diet + tannin (CD+T). The simple diets contained lower concentrations of dairy ingredients, inclusion of barley and no addition of zinc oxide, palatant, acidifier and yeast. The diets with tannin were supplemented with 1,850 mg kg-1 of black wattle condensed tannin extract. The feed programme consisted of three diets: Pre-starter I (0-7 days), Pre-starter II (8-21 days) and Starter (22-28 days). Feed and water were available ad libitum. Body weight and feed intake were measured weekly to calculate the average daily feed intake, daily weight gain and feed conversion ratio. The faecal consistency score was measured daily to calculate the diarrhoea occurrence percentage. Blood samples for serum haptoglobin concentration were collected at 7 and 14 days after weaning. The addition of condensed tannin had no effect (P > 0.05) on evaluated performance variables for weaned piglets. The diet type also did not affect the piglets’ performance (P > 0.05). The inclusion of black wattle (Acacia mearnsii) condensed tannin does not affect piglet performance, reduces the incidence of diarrhoea in the first week after weaning and decreases the haptoglobin inflammatory response. ABSTRACT Acacia mearnsii Eightyeight Eighty eight used old 802 8 02 8.0 121 1 21 1.2 kg samesex same sex design SD, SD , (SD) SD+T, SDT SD+T T (SD+T) CD (CD CD+T. CDT CD+T . (CD+T) ingredients oxide palatant yeast 1850 850 1,85 kg1 kg- Prestarter Pre starter 07 0 (0- days, 821 (8-2 2228 22 (22-2 days. libitum ratio percentage P 0.05 005 05 0.05. response 80 8. 12 1. (SD (SD+T (CD+T 185 85 1,8 (0 82 (8- 222 (22- 0.0 00 18 1, ( (8 (22 0. (2

RESUMO: O objetivo do estudo foi avaliar o efeito de extrato de tanino condensado de acácia-negra (Acacia mearnsii) no desempenho, consistência fecal e concentração sérica de haptoglobina em leitões na fase de creche. Foram utilizados 88 leitões desmamados aos 28±3 dias, com peso vivo médio inicial 8,02 ± 1,21 kg, alojados em duplas de mesmo sexo, e distribuídos em quatro tratamentos em um delineamento de blocos inteiramente ao acaso, em esquema fatorial 2 x 2. Os tratamentos experimentais foram: dieta simples (SD); dieta simples + tanino (SD+T); dieta complexa (CD) e dieta complexa + tanino (CD+T). As dietas simples foram formuladas com menores concentrações de derivados de leite, inclusão de cevada e sem adição de óxido de zinco, palatabilizante e levedura. As dietas com inclusão de tanino foram suplementadas com 1850 mg kg-1 de extrato concentrado de tanino de acácia negra. O programa alimentar foi constituído de três dietas: Pré-inicial I (0 a 7 dias), Pré-inicial II (8 a 21 dias) e Inicial (22 a 28 dias). Ração e água ficaram disponíveis ad libitum. O peso e o consumo de ração dos leitões foram mensurados semanalmente, para calcular a média diária de consumo, o ganho de peso diário e a conversão alimentar. O índice de consistência fecal foi medido diariamente para calcular a porcentagem de ocorrência de diarreia. Amostras de sangue para concentração sérica de haptoglobina foram coletadas aos sete e 14 dias após o desmame. A adição de tanino condensado não teve efeito (P > 0,05) no desempenho de leitões desmamados. O tipo de dieta também não afetou o desempenho dos leitões (P > 0,05). A inclusão do tanino condensado de acácia-negra (Acacia mearnsii) não afetou desempenho, reduziu a incidência de diarreia na primeira semana após o desmame, e diminuiu a resposta inflamatória da haptoglobina. RESUMO acácianegra negra Acacia mearnsii creche 8 283 3 28± 802 02 8,0 121 1 1,2 kg sexo acaso SD (SD) SD+T SDT T (SD+T) CD (CD CD+T. CDT CD+T . (CD+T) leite zinco levedura 185 kg1 kg- Préinicial Pré 0 ( , 22 (2 dias. libitum semanalmente desmame P 0,05 005 05 0,05. 80 8, 12 1, (SD (SD+T (CD+T 18 0,0 00 0,

ABSTRACT Two investigations were developed. The first experiment was to determine the metabolizability of Moringa (Moringa oleifera) leaf meal. 120 slow-growing, 21-day-old chickens were used. The experimental period was seven days, four for adaptation to diets and three for collection of excreta. The Moringa leaf presented values for apparent metabolizability coefficients of dry matter, crude protein, crude energy and neutral detergent fiber, as well as apparent metabolizable energy and corrected metabolizable energy for a nitrogen balance, of 49.77%, 44.48%, 46.26% and 53.02%, and 2,334 kcal/kg, 2,159 kcal/kg respectively. The second experiment was to evaluate the inclusion of Moringa leaf meal in the diets of two hundred and forty slow-growing chickens from one to 80 days of age on performance, carcass characteristics, biometrics of digestive organs and meat color. The experimental design was completely randomized with four treatments (0.75%; 1.50%; 2.25% and 3.00% inclusion of the Moringa leaf), six repetitions and ten chickens per experimental unit; the inclusion levels of the Moringa leaf did not influence (p> 0.05) feed intake, weight gain, feed conversion, final weight at 30, 60 and 80 days, carcass, noble cut yields and meat color. The inclusion of Moringa leaf meal can be used up to the 3% level in slow-growing chicken diets, without affecting the productive performance of these animals. developed oleifera 12 slowgrowing, slowgrowing slow growing, growing 21dayold dayold 21 day old excreta matter protein fiber balance 4977 49 77 49.77% 4448 44 48 44.48% 4626 46 26 46.26 5302 53 02 53.02% 2334 2 334 2,33 kcalkg kcal kg 2159 159 2,15 respectively 8 characteristics color 0.75% 075 0 75 (0.75% 1.50% 150 1 50 225 25 2.25 300 3 00 3.00 leaf, , leaf) unit p> p (p 0.05 005 05 intake gain conversion 30 6 animals 497 4 7 49.77 444 44.48 462 46.2 530 5 53.02 233 33 2,3 215 15 2,1 0.75 07 (0.75 1.50 22 2.2 3.0 0.0 49.7 44.4 46. 53.0 23 2, 0.7 (0.7 1.5 2. 3. 0. 49. 44. 53. (0. 1. (0 (

RESUMO Duas investigações foram desenvolvidas. O primeiro experimento foi para determinar a metabolizabilidade da farinha de folhas da moringa (Moringa oleifera), foram utilizadas 120 frangos de crescimento lento com 21 dias de idade, o período experimental foi de sete dias, quatro para adaptação às dietas e três para coleta de excretas; a folha de moringa apresentou valores para coeficientes de metabolizabilidade aparente de matéria seca, proteína bruta, energia bruta e fibra em detergente neutro, e energia metabolizável aparente, e energia metabolizável corrigida para balanço de nitrogênio de 49.77%, 44.48%, 46.26% e 53.02% e 2,334 kcal/kg, 2,159 kcal/kg, respectivamente. O segundo experimento teve como objetivo avaliar a inclusão de farinha de folha de moringa em dietas de duzentos e quarenta frangos de crescimento lento de um a 80 dias de idade sobre o desempenho, características de carcaça, biometria dos órgãos digestivos e cor da carne; o delineamento experimental foi inteiramente casualizado com quatro tratamentos (0.75%; 1.50%; 2.25% e 3.00% de inclusão de folha de moringa), seis repetições e dez frangos por unidade experimental; os níveis de inclusão da folha de moringa não influenciaram (p>0,05) o consumo de ração, ganho de peso, conversão alimentar, peso final aos 30, 60 e 80 dias, carcaça, rendimento de cortes nobres e cor da carne. A inclusão de farelo de folhas de moringa pode ser utilizada até o nível de 3% em rações para frangos de crescimento lento, sem afetar o desempenho produtivo desses animais. desenvolvidas Moringa oleifera, oleifera , oleifera) 12 2 excretas seca neutro 4977 49 77 49.77% 4448 44 48 44.48% 4626 46 26 46.26 5302 53 02 53.02 2334 334 2,33 kcalkg kcal kg kcal/kg 2159 159 2,15 respectivamente 8 carcaça carne 0.75% 075 0 75 (0.75% 1.50% 150 1 50 225 25 2.25 300 3 00 3.00 moringa, moringa) p>0,05 p005 p 05 (p>0,05 ração alimentar 30 6 animais 497 4 7 49.77 444 44.48 462 46.2 530 5 53.0 233 33 2,3 215 15 2,1 0.75 07 (0.75 1.50 22 2.2 3.0 p>0,0 p00 (p>0,0 49.7 44.4 46. 53. 23 2, 0.7 (0.7 1.5 2. 3. p>0, p0 (p>0, 49. 44. 0. (0. 1. p>0 (p>0 (0 p> (p> ( (p

ABSTRACT The objective of this study was to evaluate the effects of prebiotics, alone and in combination with antibiotics, on broiler performance, carcass yield, intestinal permeability, and intestinal morphometry. A total of 1440 day-old male Cobb 500 chicks were distributed in a completely randomized design, with four treatments and 10 replications per treatment. The treatments used were a basal diet without prebiotics and antibiotics (BD), a basal diet with antibiotics (AB), a basal diet with prebiotics (PRE), and a basal diet with antibiotics and prebiotics (AB+PRE). To perform the treatment, the antibiotic zinc bacitracin and a prebiotic of S. cerevisiae-derived mannan-oligosaccharides and beta-glucans were used. The treatments did not affect the performance of birds from 1 to 7 and 1 to 21 days of age. From 1 to 35 and 1 to 42 days, birds fed the AB+PRE treatment had higher feed intake than those fed the AB treatment. From 1 to 35 days, birds fed the AB+PRE treatment showed a worse feed conversion ratio. However, there was no difference in carcass yield between treatments. A higher number of goblet cells was observed in the duodenum and ileum of birds fed AB+PRE, but lower counts were obtained in birds fed AB. Intestinal histomorphometry displayed similar responses between both ages regarding antibiotic and prebiotic treatments, except in the ileum at 42 days, in which the antibiotic elicited a better response. Intestinal permeability analysis showed no significant difference between diets. The use of prebiotics, alone or in combination with antibiotics, does not improve the performance of broilers. morphometry 144 dayold day old 50 design BD, BD , (BD) AB, (AB) PRE, PRE (PRE) AB+PRE. ABPRE . (AB+PRE) S cerevisiaederived cerevisiae derived mannanoligosaccharides mannan oligosaccharides betaglucans beta glucans 2 age 3 4 ratio However response diets broilers 14 5 (BD (AB (PRE (AB+PRE