ABSTRACT The objective of this study was to examine the effects of replacement of an antibiotic (ANT, chlorohydroxyquinoline) in the diet of weaned piglets with a prebiotic composed of β-glucans, glucomannans, and mannan-oligosaccharides on growth performance, diarrhea occurrence (DO), hematological parameters, pH of digestive content, organ weights, intestinal epithelium morphology, and intestinal bacterial counts. A total of 120 piglets (weaned at 21 d old; 6.32±0.10 kg BW) were allocated in a randomized block design, with six pens replicates and four piglets per pen as experimental unit. Treatments consisted of diets with 0, 1,000, 2,000, or 3,000 mg kg−1 of prebiotic and a basal diet with 120 mg kg−1 ANT. No differences of treatments were observed on performance, DO, pH of digestive content, organ weights, and hematological parameters. Duodenal villus density (VD) increased linearly with the prebiotic levels. In the jejunum, the prebiotic level of 2,000 mg kg−1 resulted in a greater VD compared with the ANT. Enterobacteriaceae count in the ileum and total and lactic acid bacteria counts in the cecum responded quadratically to increasing prebiotic levels. The equations estimated the prebiotic levels of 2,125, 1,167, and 1,500 mg kg−1 to provide reduced counts of the respective bacteria (ileal enterobacteria: 6.47 log CFU g−1; total cecal bacteria: 6.70 log CFU g−1; and cecal lactic acid: 7.29 log CFU g−1). Salmonella spp. was not detected, whereas Escherichia coli and Lactobacillus spp. gene copies were unaffected by the treatments. Prebiotic levels or ANT do not enhance performance or health of weanling pigs, but the effects observed on VD and microbiota profile might be an indication of the potential benefits of these products in commercial farming conditions.

Abstract Studies and innovations on alternative feed additives, especially on homeopathic remedies have been highlighted in order to replace or reduce the use of antibiotics in pig production. This paper aimed to assess the addition of homeopathic products in pig diet and their effects on the growth performance, serum metabolites, nutrient and energy digestibility, carcass traits and meat quality. A total of 60 immunocastrated male pigs, weighing on average 30.91 ± 0.95 kg, were distributed in two treatments, 10 replicates and three animals/experimental unit. There was no effect (P≥0.05) of treatment on the growth performance and serum metabolites. The percentage of acid-insoluble ash recovered in the diet was greater (P≤0.01) in diets containing homeopathic products. The apparent digestible energy of diets containing homeopathic products was reduced (P≤0.01) in the growing phase and reduced (P≤0.01) the apparent digestibility coefficients of dry matter, crude protein, soluble neutral and acid detergent fibers, and gross energy in the growing and finishing phases. Pig that received diets with homeopathic products had higher (P≤0.05) amount of meat, percentage of meat and marbling. The use of homeopathic products in diets improves the percentage and quality of meat, as well as the marbling of the pig carcass, maintaining the performance.

ABSTRACT This study was conducted to assess the effects of maternal dietary calcitic seaweed (CSW) on performance and blood metabolites of sows, and on performance, blood metabolites, intestinal microbiota, and parameters of gastrointestinal tract and bone of litters. On d 21 (post-insemination), non-pregnant sows were removed from the trial, remaining 19 sows in control group (without CSW) and 16 sows receiving CSW. Then, a total of 35 sows were allocated in a randomized block design with two treatments: control diet with calcitic limestone plus dicalcium phosphate (CTL) or CTL plus 0.4% CSW. In gestation, sows were fed twice a day (07:00 and 15:00 h) to reach an intake of 2.5 kg animal−1 day−1 divided into two equal meals. On parturition day, sows were offered only 0.5 kg feed animal−1. Throughout lactation, sows were fed three times a day (≅7 kg animal−1 day−1). All diets were provided as mash. Results suggested that sows fed CTL had litters with lower body weight at birth compared with those fed CSW. Sows fed CSW had 14.28% more live-born piglets and lower stillborns. Piglets from sows fed CSW showed greater calcium concentration on d 14 after birth than those from sows fed CTL. Sows fed CSW showed better milk chemical composition and an increase of 27.16% in milk production compared with those fed CTL. Piglets from sows fed CSW had an increase in cecum content in the Enterobacteriaceae count. This study showed that adding 0.4% CSW in the diet of pregnant and lactating sows as an organic calcium source positively influences the number of live-born piglets and the percentage of stillborns. In addition, milk composition and production are also improved without affecting piglets’ biological response.

ABSTRACT The aim of this study was to assess the addition of intestinal alkaline phosphatase (IAP) to diets on the count of bacterial populations, pH of digestive organ contents, histopathological description, proinflammatory markers, hepatic glycogen reserve, and diarrhoea incidence of piglets challenged with Escherichia coli. Sixty-four crossbred piglets (7.16±0.28 kg body weight, 25-days-old) were assigned to four treatments in a completely randomised block design: negative control (NC), NC + antibiotic (ANT), NC + 15 mg IAP, or NC + 30 mg IAP kg−1 of diet, eight replications of two piglets per experimental unit. All piglets were orally challenged with 6 mL of a solution containing enterotoxigenic Escherichia coli K88 at 106 CFU mL−1 at 15 days of experimentation. The study lasted for 19 days. At the end of the experimental period, the piglets were slaughtered (six animals per treatment). Enterobacteriaceae in caecum and colon was lower in piglets on 30 mg IAP than with ANT and NC, ANT or 15 mg IAP, respectively. Enterobacteriaceae adhered to the mesenteric lymph nodes (MLN) was greater in piglets fed ANT than the other treatments. Lactic acid bacteria (LAB) count in caecum was greater in piglets fed NC and ANT. In MLN, LAB count was greater in ANT and 30 mg IAP-fed piglets compared with 15 mg IAP. Piglets in 30 mg IAP in diet showed a tendency for lowering tissue necrosis compared with NC or ANT. Piglets fed 30 mg IAP showed a reduction in diarrhoea incidence in the pre- and post-challenge compared with 15 mg IAP and all other treatments, respectively. Based on the criteria, addition of 30 mg IAP to diet inhibits Enterobacteriaceae population and suggests a potential effect in mitigating intestinal injuries, as observed in piglets in the NC for some of the parameters investigated.

ABSTRACT The objective of this study was to evaluate the cholecalciferol and 1,25-dihydroxycholecalciferol glycoside supplementation in piglet diet on organ biometry and physicochemical composition, pH of the digestive tract contents, and bone traits. A total of 128 entire male piglets (21 days-old, 6.82±0.38 kg body weight) were distributed in a completely randomized block design with eight replications and four animals per experimental unit. The treatments were composed of a diet 100/0 = 100% of the vitamin D supplemented with cholecalciferol; 50/50 = 50% supplemented with cholecalciferol + 0.25 μg of 1,25(OH)2D3 glycoside; 25/75 = 25% supplemented with cholecalciferol + 0.375 μg of 1,25(OH)2D3 glycoside; and 0/100 = 0.50 μg of 1,25(OH)2D3 glycoside. The results indicated that piglets fed 100/0 showed an increase in spleen weight compared with those fed 0/100 and greater heart dry matter than piglets fed the 50/50 diet. Phosphorus concentration in the spleen was higher in piglets that received 25/75 when compared with those that received the 100/0 and 0/100 diets. Piglets that received the 0/100 diet showed higher pH of the stomach contents, but showed reduced pH of the contents of the jejunum and ileum. The width of the epiphysis and diaphysis was greater when piglets consumed the 50/50 treatment; however, a lower epiphysis height was observed. The use of 1,25(OH)2D3 glycoside alone in piglet diets does not negatively influence the pH of the gastrointestinal tract and organ physicochemical composition. In addition, the use of diets with 1,25(OH)2D3 glycoside as a replacement for cholecalciferol reduces spleen weight and promotes improvements in bone development.

Resumo O objetivo deste estudo foi o de avaliar o efeito de tamanho de granja (TG) e a ordem de parição (OP) sobre a ocorrência de ovos de endoparasitas em matrizes suínas comerciais alojadas na maternidade e gestação durante o período de maio a julho de 2014. Quarenta e três unidades produtoras de leitões foram classificadas por TG: pequena (100 a 250 porcas), média (251 a 510 porcas), grande (511 a 1.000 porcas) e muito grande (mais de 1.000 porcas). As porcas foram classificadas por OP: até dois, três a cinco e mais que cinco partos. As amostras fecais foram processadas usando a técnica de flotação em solução salina hipersaturada a 30-35%. Os resultados revelaram que a prevalência global de endoparasitas gastrointestinais obtidos neste estudo foi de 13,59%, em que 4,64% foram positivas para Ascaris suum, 0,56% para Trichuris suis e 8,27% para oocistos de coccídeos. A prevalência de endoparasitas obtidos para fazendas de pequeno e médio porte, e para fazendas grandes e muito grandes foi de 34,58% e 15,52%, respectivamente. Em conclusão, o estudo mostra que mais da metade das fazendas foram positivas para A. suum e oocistos de coccídeos, mas principalmente para as fêmeas mais jovens. Em geral, as porcas com até dois partos e pequenas propriedades mostraram uma porcentagem maior de endoparasitas.

Abstract The goal of this study was to assess the effect of farm size (FS) and farrowing order (FO) on the occurrence of endoparasites eggs in commercial sows housed in maternity and gestation areas during the period from May to July 2014. Forty-three piglet production units were classified by FS: small (100 to 250 sows), medium (251 to 510 sows), large (511 to 1,000 sows) and very large (more than 1,000 sows). Sows were classified by FO: up to two, three to five or more than five parturitions. Faecal samples were processed using the simple flotation technique in a hypersaturated salt solution (30-35% NaCl). The results revealed that the overall prevalence of gastrointestinal endoparasites obtained in this study was 12.47%, in that 4.64% were positive for Ascaris suum, 0.56% for Trichuris suis and 8.27% for coccidia oocysts. The prevalence of endoparasites obtained for small and medium size farm, and for large and very large farm was 34.58% and 15.52%, respectively. In conclusion, the study shows that more than half of the farms were positive for A. suum and coccidia oocysts, but mainly for younger females. In general, sows with up to two parturitions and small farms showed a higher endoparasites percentage.

RESUMO Foram conduzidos dois experimentos com o objetivo de determinar o valor nutricional e avaliar o desempenho e características da carcaça de suínos alimentados com farelo de canola (Brassica napus). No Experimento I, foi conduzido um ensaio de digestibilidade total com 14 suínos mestiços de linhagem comercial, machos castrados, com 60,69 ± 4,26 kg de PV inicial. O alimento teste farelo de canola (FC), substituiu em 25% a ração referência à base de milho e farelo de soja. Cada suíno constituiu uma unidade experimental, totalizando sete unidades experimentais por ração. Os valores de energia digestível (ED) e energia metabolizável (EM) na matéria natural para o FC foram de 2995 kcal/kg e 2796 kcal/kg, respectivamente. No Experimento II, foram utilizados 50 suínos mestiços, com peso vivo inicial de 29,90 ± 1,16 kg e final de 60,33 ± 3,38 kg, na fase de crescimento, e peso vivo inicial de 60,37 ± 1,6 kg e final de 90,37 ± 3,19 kg na fase de terminação. Foi utilizado o delineamento de blocos inteiramente casualizados, com quatro tratamentos, (6, 12, 18 e 24% de FC), com 10 repetições e um suíno por unidade experimental. Adicionalmente, foi formulada uma ração testemunha, contendo 0% de FC. Os dados foram submetidos à análise de variância e adicionalmente foi aplicado o Teste de Dunnett, e análise de regressão, a 5% de probabilidade. Os resultados sugerem que é possível incluir até 24% de FC nas dietas de suínos, em crescimento e terminação, sem prejudicar o desempenho e as características da carcaça.

ABSTRACT Two experiments were performed for the purpose of determining the nutritional value and assess the performance and carcass traits in pigs fed on canola meal (Brassica napus). Experiment I consisted of a total digestibility trial conducted with 14 castrated commercial crossbred male pigs with 60.69 ± 4.26 kg initial live weight. The treatments consisted of a control diet based on maize and soybean meal and another diet containing canola meal (control + 25% canola meal). Each pig was an experimental unit, totalling seven experimental units per diet. The digestible energy and the metabolizable energy of canola meal used was 2,999 and 2,730 kcal.kg-1, respectively. These values were used to formulate the diets of the performance experiment. Experiment II included 50 crossbred pigs with an average initial live weight of 29.90 ± 1.16 kg and an average final live weight of 60.33 ± 3.38 kg during the growing phase, and an average initial live weight of 60.37 ± 1.6 kg and an average final live weight of 90.37 ± 3.19 kg during the finishing phase. The experimental design consisted of randomized blocks, with four treatments (6, 12, 18, and 24% canola meal), 10 repetitions, and one pig per experimental unit. The control diet was formulated with 0% canola meal. The data were assessed using ANOVA test and the averages of the treatments were compared using Dunnett's test and regression analysis at a 5% probability level. The results suggest that it is possible to use up to 24% canola meal in the diets for pigs during the growing and finishing phases without affecting the performance and carcass traits.

Foi conduzido um estudo com objetivo de avaliar o uso do farelo de algodão (FA42) na alimentação de suínos, nas fases de crescimento e terminação, seus efeitos sobre o desempenho zootécnico, características de carcaça e viabilidade econômica. Foram utilizados 40 suínos mestiço com peso de 29,7 ± 1,6 aos 52,2 ± 3,6kg para o crescimento e 52,7 ± 2,9 aos 86,9 ± 5,0kg para a terminação. Para cada fase foram formuladas três rações (5, 10 e 15% de FA42). Adicionalmente foi formulada uma ração sem a inclusão de FA42 (0%). Os suínos foram distribuídos em um delineamento em blocos ao acaso com quatro tratamentos e quatro blocos, com quatro repetições por tratamento. Não foram observados efeitos da inclusão de FA42 para as variáveis de desempenho na fase de crescimento, entretanto para a fase de terminação, houve efeito linear crescente dos níveis de inclusão sobre o consumo e conversão alimentar. As características de carcaça e o nitrogênio da uréia plasmática não foram influenciados. Os resultados sugerem que o FA42 pode ser utilizado nas rações de suínos em crescimento em até 15% e em até 10% na terminação ou em substituição próxima de 50% da proteína do farelo de soja, sem prejuízos ao desempenho. Entretanto, o nível de 5% de inclusão do FA42 foi o que apresentou a melhor eficiência econômica.

One experiment was carried out to evaluate the use of cottonseed meal (CM42) on growing-finishing pigs feeding and the effect on performance, carcass traits and economic feasible. Were used 40 crossbred pigs, with body weight of 29.7 ± 1.6 to 52.2 ± 3.6kg in the growing and 52.7 ± 2.9 to 86.9 ± 5.0kg in the finishing phase. For each phase were formulated four diets, the first contain no cottonseed meal (0%) and three experimental diets with increasing levels of inclusion (5, 10 and 15%) of CM42. The pigs were allotted in a completely randomized block design with four treatments and four blocks, resulting in four replicates per treatment. No were observed effect of inclusion of CM42 for performance variables in growing phase, however for finishing phase, there were linear effect in performance of levels of inclusion on daily feed intake and feed:gain ratio. No was effect of inclusion of CM42 on carcass traits and plasma urea nitrogen. The CM42 can be used in diets pigs on growing phase in levels up to 15% and to used up to 10% on finishing phase, respectively, or in replaced next 50% in crude protein of soybean meal, without impairing for pigs. However, 5% level of inclusion showed better economic efficiency.

A semente do maracujá é um subproduto da extração da polpa do maracujá, podendo ser utilizado na alimentação dos suínos. Foram conduzidos dois experimentos (digestibilidade e desempenho), objetivando avaliar a utilização do farelo da semente de maracujá na alimentação de suínos em crescimento e terminação. Inicialmente foi realizado um ensaio de digestibilidade com suínos em crescimento e terminação, em que o farelo da semente de maracujá (FSM) substituiu a ração referência (0% FSM) em níveis de 4, 8, 12 e 16%. Foram utilizados 30 suínos, machos castrados, com peso vivo médio inicial de 36,85±4,19. O FSM apresentou ED e EM de 3.244 e 3.223 Mcal/kg, respectivamente. No ensaio de desempenho, foram utilizados 150 suínos, sendo 75 na fase de crescimento e 75 na fase de terminação, com peso vivo inicial de 30,63±1,49 e final de 60,38±4,75 kg e 60,40±1,50 e 90,02±4,84 kg, respectivamente. Foram utilizadas cinco dietas, sendo quatro níveis de inclusão do FSM (4, 8, 12 e 16%) e uma ração testemunha (0% do FSM). Os níveis do FSM não influenciaram (P>0,05) as variáveis de desempenho. Na fase de crescimento, os níveis séricos de colesterol aumentaram linearmente (P<0,05) com os níveis de inclusão do FSM. As variáveis quantitativas de carcaça e qualitativas da carne não foram influenciadas (P>0,05) pelos níveis crescentes do FSM nas dietas. Conclui-se que o FSM pode ser utilizado em até 16% em dietas de suínos em crescimento e terminação.

The passion fruit seed is a byproduct of the extraction of the passion fruit pulp and can be used for feeding to pigs. Two experiments were conducted (digestibility and performance) to evaluate the use of the passion fruit seed meal in feed for growing and finishing pigs. A digestibility trial was conducted with growing and finishing pigs, in which the passion fruit seed meal (PSM) replaced the reference diet (0% PSM) in levels of 4, 8, 12 and 16%. Thirty barrows were used with average weight of 36.85±4.19. The PSF showed DE and ME of 3.244 and 3.223 Mcal/kg, respectively. In the performance trial, were used 150 pigs, which 75 in the growing phase and 75 pigs in the finishing, with initial body weight of 30.63±1.49 and final of 60.38±4.75 kg and 60.40±1.50 and 90.02±4.84 kg, respectively. Five diets were used, with four inclusion levels of PSM (4, 8, 12 e 16%) and one control diet (0% of PSM). The PSM levels did not influence (P>0.05) the performance variables. In the growing pigs, serum levels of cholesterol increased linearly with (P<0.05) inclusion levels of PSM. Quantitative of carcass traits and meat quality were not affected (P>0.05) by increasing levels of PSM in the diets. We conclude that the PSM can be used up to 16% in growing and finishing pigs diets.

Dois experimentos foram conduzidos com o objetivo de determinar o valor nutricional e avaliar o desempenho e características de carcaça de suínos na fase de crescimento-terminação, alimentados com rações contendo dois tipos de glicerinas semipurificadas, uma de óleo vegetal (GSPV) e uma mista de óleo de soja + gordura animal (GSPM). No ensaio de digestibilidade (experimento I) foram utilizados 32 suínos mestiços, machos castrados, com 45,08 ± 4,11kg. Foram utilizados três níveis de inclusão (6; 12 e 18%) de glicerina semipurificada (GSPV e GSPM) na dieta referência. A energia metabolizável (EM) das glicerinas foi estimada pela análise de regressão do consumo de EM (Kcal/kg) associada à glicerina vs. o consumo de glicerina (kg). Os valores de EM (Kcal/kg) obtidos foram: 2.731 para GSPV e 2.210 para GSPM. No Experimento II, 72 suínos (30,08 ± 1,65kg a 60,58 ± 3,57kg) na fase de crescimento e (60,83 ± 2,63kg a 93,79 ± 5,72kg) na fase de terminação, foram distribuídos em delineamento inteiramente ao acaso, em esquema fatorial 2 x 4 + 1, sendo dois tipos de glicerina semipurificada (GSPV e GSPM), quatro níveis de inclusão (4; 8; 12 e 16%), oito unidades experimentais e uma ração testemunha, não contendo glicerina (0%). Todos os suínos foram abatidos para determinação das características da carcaça. Os resultados de desempenho sugerem que é viável a utilização em até 16% de ambas as glicerinas na alimentação de suínos em crescimento e terminação, sem prejuízos no desempenho e características de carcaça.

Two experiments were carried out to determine the nutritional value and to evaluate the performance and carcass traits in the growing-finishing pigs fed on two types of semipurified glycerin, which were made from vegetable oil (SPGV) and mixed of animal + vegetable oil (SPGM). In the digestibility trial (experiment I) 32 crossbreed barrows were used with initial body weight of 45.08 ± 4.11kg. It were used three levels of inclusion (6, 12 e 18%) of semipurified glycerin (SPGV and SPGM) in the basal diet. The metabolizable energy (ME) value of glycerin were estimated by regression of ME (kcal/kg) intake associated with glycerin vs. glycerin intake (kg). The values of ME (kcal/kg) obtained were: 2,731 for SPGV and 2,210 for SPGM. In experiment II, 72 pigs (30.08 ± 1.65 to 60.58 ± 3.57) in growing and (60.83 ± 2.63 to 93.79 ± 5.72) in finishing phase, were allotted in a completely randomized design in a 2 x 4 + 1 factorial scheme, with two types of semipurified glycerin (SPGV and SPGA), four inclusion levels (4; 8; 12 and 16%), eight experimental unit and a control diet containing no glycerin (0%). All pigs were slaughtered to evaluate the carcass traits. The performance results suggest that it is feasible to use up to 16% of both semipurified glycerins on growing and finishing pigs feeding, without impairing performance and carcass traits.

Determinou-se o valor nutricional e avaliou-se o desempenho de leitões alimentados com rações contendo glicerinas semipurificadas de origem vegetal (GSPV) e mista (GSPM). Na digestibilidade foram utilizados 32 leitões, machos castrados, distribuídos em delineamento em blocos ao acaso. Foram estudadas duas glicerinas (GSPV e GSPM) e três níveis de inclusão na dieta-teste (4, 8 e 12%). A unidade experimental consistiu de um leitão. A energia metabolizável (EM) das glicerinas foi estimada pela análise de regressão do consumo de EM (kcal kg-1) associada à glicerina vs. o consumo de glicerina (kg). Os valores de EM (kcal kg-1), na matéria natural, obtidos foram 3.373 para GSPV e 2.932 para GSPM, indicando que as duas glicerinas são fontes de alta energia disponível para a alimentação de leitões. No desempenho, foram utilizados 90 leitões, distribuídos em blocos ao acaso, em esquema fatorial 2 x 4 + 1, sendo duas glicerinas, quatro níveis de inclusão (3, 6, 9 e 12%), cinco repetições e dois leitões por unidade experimental. Adicionalmente foi formulada uma ração-testemunha sem glicerina (0%). Não houve efeito do nível de inclusão de glicerina sobre o desempenho, sugerindo que é viável a utilização em até 12% de ambas as glicerinas na alimentação de leitões.

The nutritional value and the performance of piglets fed on diets with semipurified glycerin (SPGV) and mixed (SPGM) vegetable oil was determined and evaluated. Thirty-two crossbred piglets, allotted in a completely randomized block design, were used in the digestibility trial. Two types of glycerin (SPGV and SPGM) and three levels of diet (4, 8 and 12%) were studied. The experimental unit consisted of one piglet. Glycerins' metabolizable energy (ME) was estimated by regression of ME (kcal kg-1) intake associated with glycerin vs. glycerin intake (kg). ME as-feed-basis rates were 3,373 for SPGV and 2,932 for SPGM, or rather, the glycerins are highly available energy source for piglets. In the performance trial, 90 piglets were allotted in a completely randomized blocks design in a 2 x 4 + 1 factorial scheme, two glycerins, four levels (3, 6, 9 and 12%), five replicates (pens) and two piglets per pen. A control diet with no glycerin (0%) was additionally formulated. Since no effect of glycerin inclusion on pig performance occurred, it was feasible to use up to 12% of both types of glycerin on piglets feeding.

Two experiments were carried out to determine the nutritional value and to evaluate performance of piglets fed two types of crude glycerine (CG), which were made from vegetable oil (CGS) and a mix of animal fat + % soybean oil (CGA). In experiment I, a digestibility assay was conducted using 32 crossbred piglets (19.20±1.52 kg). The experimental unit consisted of one pig, with a total of four experimental units per diet. The glycerine levels used in the digestibility assay were 4, 8, and 12% of the basal diet (corn + soybean based). The digestible (DE) and metabolizable energy (ME) values of glycerine were estimated by regression of DE and ME intake (kcal/kg) vs. glycerine intake (kg). The values (as-fed basis) of DE and ME (kcal/kg) obtained were: CGS = 5,070 and 4,556; CGA = 5,143 and 4,488, respectively. The results indicate that these two types of glycerine are a highly-available energy source for the feeding of piglets (15-30 kg). In experiment II, 90 piglets (BW = 15.18±0.67 to 30.28±1.68 kg), were allotted in a completely randomized design in 2 × 4 factorial arrangement, with of two types of crude glycerine (CGS and CGA) and four inclusion levels (3, 6, 9, and 12%). Five experimental units (pens with two pigs) were used for each level of crude glycerine, resulting in five replicates per treatment in the diet. Additionally, a control diet containing no glycerine (0%) was formulated. There was no interaction between levels of CG and types of crude glycerine, and the regression analysis indicates no effects of crude glycerine inclusion on performance and plasma variables. The results suggest that it is feasible to use up to 12% of both tyes of crude glycerine (obtained from soybean oil and mixed) in the diet for piglets without impairing performance, in addition to promoting a reduction of about 11% in the cost with feeding.

Foram conduzidos dois experimentos com o objetivo de avaliar o desempenho e as características de carcaça de suínos na fase de crescimento e terminação alimentados com rações contendo casca de café melosa ensilada. No experimento 1, a casca de café foi moída em peneira com crivos de 4 mm e ensilada com 30% de água e inoculante enzimobacteriano e avaliada em ensaio de digestibilidade com 15 suínos mestiços, distribuídos em delineamento inteiramente casualizado. De forma geral, o processo de ensilagem não melhorou a digestibilidade da casca de café melosa. No experimento 2, foram utilizados 60 suínos (32,52 a 59,58 kg) na fase de crescimento e 55 suínos (61,70 a 90,27 kg) na fase de terminação, distribuídos em delineamento inteiramente casualizado, com cinco dietas (0, 4, 8, 12 e 16% de casca de café melosa ensilada) e seis repetições. Nas fases de crescimento e terminação, não houve efeito dos níveis de casca de café melosa ensilada sobre o consumo de ração, o ganho de peso e o nitrogênio da uréia plasmática. Entretanto, na fase de terminação, a conversão alimentar melhorou com o aumento dos níveis de casca de café melosa ensilada. A espessura de toucinho e o marmoreio responderam de forma quadrática, enquanto o peso do estômago vazio aumentou de forma linear com a inclusão de casca de café melosa ensilada na dieta. A casca de café melosa ensilada tem bom valor nutricional e, se utilizada em níveis correspondentes a até 16% da dieta, não prejudica o desempenho de suínos nas fases de crescimento e terminação e resulta em carcaças mais magras, entretanto a viabilidade econômica de sua utilização depende da relação de preços entre esse subproduto e os demais ingredientes.

Two experiments were carried out with the objective of evaluating the performance and carcass traits of growing and finishing pigs fed rations with sticky coffee hull silage. In experiment 1, the coffee hulls were ground through a 4-mm screen and ensiled with 30% water and enzymatic-bacterial inoculant and evaluated in digestibility trial with 15 crossbred pigs distributed in a completely randomised design. Overall, the ensiling process did not improve the digestibility of the sticky coffee hulls. In experiment 2, it was used 60 pigs (32.52 to 59.58 kg) in the growing phase and 55 pigs (61.70 to 90.27 kg) in the finishing phase, distributed in a completely randomised design with five diets (0, 4, 8, 12 and 16% of sticky coffee hull silage) and six replicates. In the growing and finishing phase, inclusion of levels of sticky coffee hull silage did not affect feed intake, weight gain, and plasma urea nitrogen. However, in the finishing phase, feed conversion improved as the levels of sticky coffee hull silage increased. Responses by backfat thickness and marbling were quadratic, whereas empty stomach weight increased linearly when sticky coffee hull silage was included in the diet. Sticky coffee hull silage has good nutritional value and if used in levels up to 16% of the diet, it does not impair performance of pigs in the growing and finishing phases and it results in leaner carcasses. However, the economic feasibility of its use depends on the price relationship of this by-product with the other feedstuffs.

Três experimentos foram conduzidos com o objetivo de avaliar o efeito da adição de complexo enzimático (CE) sobre o valor nutritivo da casca de soja utilizada na alimentação de suínos na fase inicial. O complexo enzimático utilizado continha α-galactosidase, β-glucanase, galactomananase e xilanase. No experimento 1, determinou-se a digestibilidade da casca de soja com complexo enzimático (0, 200 e 300 mg/kg) em leitões com peso inicial de 22,49 ± 1,73 kg. Nenhum dos níveis de complexo enzimático afetou a digestibilidade da casca de soja. Assim, realizou-se outro ensaio de digestibilidade (experimento 2) com dois níveis (0 e 600 mg/kg) de complexo enzimático e, novamente, a adição de complexo enzimático (600 mg de CE/kg de ração) não melhorou a digestibilidade da casca de soja. No experimento para análise do desempenho (experimento 3), foram utilizados 60 leitões, machos castrados e fêmeas com peso inicial de 15,07 ± 1,69 kg, distribuídos em delineamento em blocos casualizados, com cinco tratamentos, seis repetições e dois animais por unidade experimental. Avaliaram-se uma ração à base de milho e farelo de soja e outras quatro rações isonutritivas com 15% de casca de soja e complexo enzimático nos níveis 0, 200, 400 ou 600 mg/kg. O consumo diário de ração e o ganho de peso diário foram menores entre os animais alimentados com a ração contendo casca de soja em comparação àqueles alimentados com a ração-referência. Entretanto, a conversão alimentar melhorou de forma linear com inclusão do complexo enzimático (200, 400 e 600 mg/kg). O uso do complexo enzimático não afeta a digestibilidade da casca de soja, mas melhora a conversão alimentar de leitões (15-30 kg) alimentados com dietas contendo 15% de casca de soja.

Three experiments were carried out to evaluate the effect of adding enzymatic complex (EC) on the nutritive value of soybean hulls (SH) in starting pig feeding. The enzyme complex used contained α-galactosidase, β-glucanase, galactomananase and xilanase. In experiment 1, the digestibility of soy bean hull with addition of enzyme complex was determined at three levels (0, 200 and 300 mg/kg), using piglets with initial body weight of 22.49 ± 1.73 kg. None of the enzyme complex levels affected the soy bean hull digestibility values. Therefore another digestibility trial (experiment 2) was conducted with two enzyme complex levels (0 and 600 mg/kg). Adding enzyme complex (600 mg of EC/kg of diet) did not improve the soybean hull digestibility values. Sixty piglets were used in the performance trial (experiment 3), barrows and gilts, with 15.07 ± 1.69 kg initial body weight, allotted to five treatments in a randomized complete design, with five treatments, six replications and two piglets per experimental unit. A corn and soybean meal based diet (BD) was assessed and a further four isonutritive diets with 15% soybean hull with the addition of increasing levels of enzyme complex (0, 200, 400 or 600 mg/kg). Daily feed intake and daily weight gain were lower for the animals fed feed containing soybean hull compared to the control feed. However feed conversion improved linearly with enzyme complex inclusion (200, 400 or 600 mg/kg). The use of enzymatic complex did not affect soybean hull digestibility, but it improved the feed conversion of starting pigs (15-30 kg) fed on diets with 15% soybean hull.

Dois experimentos foram conduzidos, objetivando determinar o valor nutricional e verificar o desempenho de leitões na fase de inicial, alimentados com rações contendo casca de café melosa ensilada (CCEn). Os alimentos estudados foram casca de café melosa (CCM) e CCEn. No Experimento I, foi conduzido um ensaio de digestibilidade utilizando 15 suínos mestiços, machos castrados, distribuídos em delineamento inteiramente casualizado. A CCM foi moída em peneira de diâmetro de 4 mm e ensilada com a adição de 30% de água e inoculante enzimo-bacteriano. De forma geral, o processo de ensilagem não melhorou a digestibilidade da casca de café melosa. No Experimento II, foram utilizados 60 leitões (15,52 ± 2,19 a 32,52 ± 3,51 kg), distribuídos em delineamento inteiramente casualizado, com cinco tratamentos (0, 4, 8, 12 e 16% de CCEn), seis repetições e dois animais por unidade experimental. Não foi verificado efeito da inclusão de CCEn sobre o consumo diário de ração, ganho diário de peso, conversão alimentar e nitrogênio da uréia plasmática. Conclui-se que a casca de café melosa ensilada apresenta bom valor nutricional e pode ser utilizada em até 16% na alimentação de leitões na fase inicial (15-30 kg), sem prejuízo no desempenho, entretanto deve-se avaliar a viabilidade econômica em função da relação de preços dos ingredientes utilizados.

Two experiments were carried out aiming to determine the nutritional value and to verify performance of starting piglets, fed on sticky coffee hull silage (SCHS) diets. The evaluated feeds were sticky coffee hull (SCH) and SCHS. In the Experiment I, a digestibility trial was carried out using fifteen crossbreed barrows, allotted in a completely randomized design. The SCH was ground on a 4 mm screen-opening diameter and was ensilaged with 30% water and enzymatic-bacterial inoculants. In general, the process of ensilage did not improve the SCHS digestibility. In the Experiment II, 60 piglets (15.52 ± 2.19 to 32.52 ± 3.51 kg) were used, allotted in a completely randomized design with five treatments (0, 4, 8, 12, and 16% SCHS), six replicates and two pigs per pen (experimental unit). There were no effects of SCHS inclusion on daily feed intake, daily weight gain, feed to gain ratio and plasma urea nitrogen. It is concluded that SCHS has good nutritional value and can be included up to 16% in starting piglets (15-30 kg) diets without impairing performance, however the economical feasibility of using SCHS will depend on the price of the feedstuffs.