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ABSTRACT The apparent total tract digestibility (ATTD; trial 1) and the apparent (AID) and standardized (SID) ileal digestibility of the amino acids (AA) (trial 2) in canola meal (CM) were evaluated with the addition of exogenous multi-carbohydrase (MC) and phytase (Phy). A total of 80 28-day-old broilers were allotted in a completely randomized design to receive treatments up to 35 days of age. A 2 × 2 factorial design was used to determine the enzyme effects on the ATTD of dry matter, nitrogen, calcium, phosphorus and fibre; as well as energy use and the AID and SID of AA, in five replicate cages. Supplementation with exogenous enzymes showed a positive interaction (p<0.05) between MC and Phy for nitrogen and energy. The isolated inclusion of Phy or MC showed a favorable effect (p<0.05) for dry matter, calcium, phosphorus and fiber. The enzyme inclusion on the AID and SID of AA in CM, established by comparing the means, suggested a better response to the addition of MC or Phy. Supplementation with Phy or MC was shown to be a viable alternative to increase the ATTD of nutrients and energy. The isolated inclusion of Phy or carbohydrate resulted in higher apparent and standardized digestibility of AA from CM. (ATTD 1 (AID (SID (AA CM (CM multicarbohydrase multi carbohydrase (MC . (Phy) 8 28dayold dayold 28 day old 3 age matter calcium fibre cages p<0.05 p005 p 0 05 (p<0.05 fiber means (Phy p<0.0 p00 (p<0.0 p<0. p0 (p<0. p<0 (p<0 p< (p< (p

https://doi.org/10.1590/1806-9061-2023-1828

Evaluation of Production Performance Parameters of Two Laying Hen Strains Housed in Four Housing Environments
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Tainika, B

; Şekeroğlu, A

; Abacı, SH

; Akyol, A

; Duman, M

; Şentürk, YE

; Avcı, M

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 2 elocation eRBCA-2023-1885

Resumo: En | Texto: En | PDF: En

ABSTRACT This study investigated the impact of housing environment on performance parameters of the Lohmann LSL Classic (LW) and Lohmann Sandy (LS) strains. The deep litter (DL), free access to outdoor Mentha piperita (MP), Petroselinum crispum (PC), and Medicago sativa (MS) housing environments were examined. A total of 260 four-week-old birds were randomly allotted to DL and outdoor plant-associated groups, with four and three replicates, respectively, and 10 birds per replicate. Data collection for weekly feed intake began at 4 weeks until the end of the study. Weekly hen weights were measured from 4 weeks of age until the age of 50% egg production; and then later, at 52 weeks of age. From the day of the first egg until the last day of the study, eggs laid in each nest box tier (upper, middle, bottom, and floor) were recorded and weighed at 9:00 a.m., 12:00 noon, and 3:00 p.m. Housing environment influenced the age at first egg and 50% egg production, hen-day egg production, feed intake during the egg-laying period, feed conversion ratio, average egg weight, and egg size distribution (p<0.01; p<0.05). Age at first egg and 50% egg production, hen-day egg production, feed intake, average egg weight, and egg size distribution varied between strains (p<0.01; p<0.05). Most of the eggs were laid in the morning and on the upper nest box tier (p<0.01). Additionally, average egg weight varied among the egg-laying time and nest box tiers, and most of the eggs laid were in the large egg size (56-65 g) category (p<0.01). It was concluded that access to Medicago sativa offers hens the most ideal environment for production performance. The two strains were quite similar in terms of overall performance outcomes. LW (LW LS (LS DL, , (DL) MP, MP (MP) PC, PC (PC) MS (MS examined 26 fourweekold week old plantassociated plant associated groups replicates respectively 1 replicate 50 later 5 upper, (upper middle bottom floor 900 9 00 9:0 am a m a.m. 1200 12 12:0 noon 300 3 3:0 pm p p.m henday egglaying laying period ratio p<0.01 p001 0 01 (p<0.01 p<0.05. p005 p<0.05 . 05 p<0.05) p<0.01. (p<0.01) Additionally tiers 5665 56 65 (56-6 g outcomes (DL (MP (PC 2 90 9: a.m 120 12: 30 3: p<0.0 p00 (p<0.0 566 6 (56- p<0. p0 (p<0. (56 p<0 (p<0 (5 p< (p< ( (p

https://doi.org/10.1590/1806-9061-2023-1885

The Effects of Acidifier Inclusion in the Diet on Growth Performance, Gastrointestinal Health, Ileal Microbial Population, and Gene Expression in Broilers Performance Health Population
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Sedghi, M

; Azghadi, MA

; Mohammadi, I

; Ghasemi, R

; Sarrami, Z

; Abbasi, M

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 2 elocation eRBCA-2023-1847

Resumo: En | Texto: En | PDF: En

ABSTRACT The purpose of this study was to investigate the effects of acidifier on broilers’ performance. A total of 648-day-old broilers were assigned to four treatments (0, 1, 2, and 3 g/kg acidifier in the diet). In the grower period, the acidifier inclusion resulted in a higher average daily weight gain (ADWG) than in the control. On the 40th day of age, 3 g/kg of acidifier increased ADWG and average daily feed intake (ADFI). The highest ADWG was observed in the 3 g/kg of acidifier treatment for the whole period. Orthogonal contrast between acidifier and control indicated that cholesterol and high-density lipoprotein (HDL) concentration in the serum was lower in the acidifier-fed broilers. Inclusion of 2 and 3 g/kg of acidifier reduced Salmonella population in the ileum. Adding 2 and 3 g/kg acidifier to the diet increased crypt depth compared to other treatments. Weight and length of the tibia were also significantly increased by acidifier. The quadratic effect showed that the acidifier had a significant effect on the tibio-tarsal index. The mRNA expression of PPARγ and Toll-Like Receptor 4 (TLR4) genes in the ileum of broilers that were fed 3 g/kg acidifier was significantly higher than in other treatments. Fatty Acid-Binding Protein 1 gene showed a significant enhancement effect by the acidifier: with increasing levels of acidifier, its expression also increased. In conclusion, the acidifier improved the performance, upregulated the expression of ileal fatty acid-binding protein 1 (FABP1), TLR4, and PPARγ genes, as well as increased the tibia length, and reduced the Salmonella population in the ileum. performance 648dayold dayold 648 old 0, 0 (0 gkg g kg diet. . diet) period (ADWG th age ADFI. ADFI (ADFI) highdensity high density HDL (HDL acidifierfed tibiotarsal tibio tarsal index TollLike Toll Like TLR4 TLR (TLR4 AcidBinding Acid Binding conclusion acidbinding acid binding FABP1, FABP1 FABP , (FABP1) 64 ( (ADFI (TLR (FABP1 6 (FABP

https://doi.org/10.1590/1806-9061-2023-1847

Growth Performance, Serum Chemistry, Cellular Immunity, and Carcass Traits of American Pekin Ducks (Anas Platyrhynchos) Reared Under Different Production Systems Performance Chemistry Immunity Anas Platyrhynchos
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Inayat, M

; Abbas, F

; Rehman, MH

; Perveen, S

; Amin, I

; Adil, M

; Hussain, D

; Hashmi, S

; Iqbal, S

; Bukhari, SM

; Ahmad, S

; Waris, M

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 2 elocation eRBCA-2023-1788

Resumo: En | Texto: En | PDF: En

ABSTRACT The selection of an appropriate production system plays a crucial role in ensuring the health, welfare, and productivity of American Pekin ducks. The aim of this study was to investigate the influence of various rearing production systems on the performance of American Pekin Ducks. A total of 180 straight run ducklings (10 days old) were randomly allocated into three experimental groups: intensive production system (IPS), free-range production system (FRPS), and pool with yard production system (PYPS). The distribution was carried out following a completely randomized design. We investigated the morphological parameters, growth performance, serum chemistry, meat cholesterol and triacylglycerol, cellular immunity, intestinal morphology, and carcass traits of Pekin ducks. The results indicate that PYPS birds exhibited significantly better morphometric parameters compared to IPS and FRPS ones. Ducks raised in PYPS had the highest growth rate till the 75th day as compared to those reared in IPS and FRPS. Triacylglycerol, total lipids, blood and meat fat and triacylglycerol were higher in IPS; whereas albumin, AG ratio, total proteins, glucose, and globulin were higher in PYPS. Similarly, cellular immunity (phagocytic activity, eosinophils, basophils, and monocytes) was increased in PYPS. Intestinal morphology and overall carcass traits were better in birds reared under PYPS than in those of IPS and FRPS. American Pekin ducks raised in PYPS showed improved growth, serum chemistry, cellular immunity, and carcass traits. These results suggest that the PYPS could be a promising production system for raising ducks in sub-tropical regions. health welfare 18 10 (1 old groups IPS, , (IPS) freerange free range FRPS, (FRPS) . (PYPS) design chemistry ones th Triacylglycerol lipids albumin ratio proteins glucose Similarly phagocytic activity eosinophils basophils monocytes subtropical sub tropical regions 1 ( (IPS (FRPS (PYPS

https://doi.org/10.1590/1806-9061-2023-1788

Effect of Oregano Essential Oil and Rosemary Extract Inclusion with Aloe vera Gel on the Quality and Storage Stability of Cooked Chicken Meat
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Al-Hijazeen, MA

; Ibrahim, RW

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 1 elocation eRBCA-2023-1835

Resumo: En | Texto: En | PDF: En

ABSTRACT This study investigated the effect of adding Origanum syriacum L. essential oil and Rosmarinus officinalis L. extract incorporated with 5 % of Aloe barbadensis miller gel on the quality and storage stability of cooked chicken meat. The experiment included five treatments: 1) Control (No additives); 2) 600 ppm of Rosemary Extract (RE); 3) 500 ppm of Oregano essential oil (OE); 4) Combination of 600 RE and 500 ppm OE (CM); and 5) 200 ppm Sodium nitrite (E-250). Lipid and protein oxidation, sensory panel assessment, and other related parameters were evaluated at different storage times. No significant differences (p>0.05) were found among treatments regarding both ultimate pH and cooking loss %. All additives showed significant (p<0.05) effect at decreasing both TBARS and total carbonyl values. However, the combination of RE and OE showed the highest significant (p<0.05) preservative effect compared to the other treatments. Moreover, the CM treatment showed the highest antioxidant effect, decreasing total aldehydes (TA) formation. The sensory panel also showed that the CM treatment was the most effective additive at improving meat shelf life regarding the selected sensorial attributes. The OE effect was higher than the RE during storage time, and comparable to the E-250 regarding TBARS, DNPH, TA values, and current sensory attributes. The combination OE and RE incorporated with Aloe carrier gel was a successful replacement that could be used in the meat industry. In addition, the gel was a promising natural carrier for both OE and RE during storage. L 1 additives) 2 60 (RE) 3 50 (OE) 4 (CM) 20 E250. E250 E 250 . (E-250) oxidation assessment times p>0.05 p005 p 0 05 (p>0.05 p<0.05 (p<0.05 values However Moreover (TA formation attributes time E-25 DNPH industry addition 6 (RE (OE (CM E25 25 (E-250 p>0.0 p00 (p>0.0 p<0.0 (p<0.0 E-2 E2 (E-25 p>0. p0 (p>0. p<0. (p<0. E- (E-2 p>0 (p>0 p<0 (p<0 (E- p> (p> p< (p< (E (p

https://doi.org/10.1590/1806-9061-2023-1835

Integrated Hydrogen Peroxide, Sono, and Heterogeneous Photocatalysis Technologies: A Novel Technique for Ammonia and Phosphorus Removal in Real Poultry Slaughterhouse Wastewater Peroxide Sono Technologies
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Yuceturk, GD

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 1 elocation eRBCA-2023-1869

Resumo: En | Texto: En | PDF: En

ABSTRACT Poultry slaughterhouse wastewater (PSW) has substantial organic load and nutrient contents, which must be removed before discharge due to being sanitary and environmental hazards. The present study is the first to analyze the individual and synergistic influences of combined hydrogen peroxide (H2O2), different ultraviolet lights (UV-A/UV-C), inorganic compound catalysts of titanium and zinc oxides (TiO2/ZnO), and ultrasound (US) processes on ammonia and phosphorus elimination from PSW using a Taguchi L36 orthogonal array. The results showed that, compared to other processes in isolation, the integrated process of H2O2, US, and heterogeneous photocatalysis (HPC) is significantly more effective at treating PSW in terms of N4 + -N removal (52.0%) and PO4-P elimination (59.5%). Furthermore, electrical energy consumption at 2.67 g-1 N4 + -N US$ and 2.14 g-1 PO4-P US$ was determined to be the most significant factor in the operating cost of the system, while the average chemical cost under optimal conditions was 0.34 US$/g. In general, the results indicate that the effectiveness of removing pollutants is directly influenced by the pH, catalyst concentration, and duration of the operation. Additionally, the presence of different types of pollutants in real wastewater might lead to reduced nutrient removal efficiencies. (PSW contents hazards H2O2 HO , H O (H2O2) UVA/UVC, UVAUVC UV A/UV C A (UV-A/UV-C) TiO2/ZnO, TiO2ZnO TiOZnO TiO2/ZnO TiO2 ZnO TiO (TiO2/ZnO) US (US L L3 array isolation HPC (HPC N 52.0% 520 52 0 (52.0% PO4P POP PO4 P PO 59.5%. 595 59.5% . 59 5 (59.5%) Furthermore 267 2 67 2.6 g1 g 1 g- 214 14 2.1 system 034 34 0.3 USg US$/g general pH concentration operation Additionally efficiencies H2O (H2O2 UVA UVC UVA/UVC AUV (UV-A/UV-C (TiO2/ZnO 52.0 (52.0 59.5 (59.5% 26 6 2. 21 03 3 0. (H2O 52. (52. 59. (59.5 (52 (59. (5 (59 (

https://doi.org/10.1590/1806-9061-2023-1869

Effects of Methionine Deficiency on Nutrient Composition, No, Nos Activity and Mrna Expression in Nf-κb Signal Pathway of the Liver and Kidney in Broiler Composition No Nfκb Nf κb
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Mou, P

; Li, J

; Li, C

; Liu, X

; Luo, X

; Huang, R

; Zhang, Y

; Wu, B

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 1 elocation eRBCA-2023-1899

Resumo: En | Texto: En | PDF: En

ABSTRACT The study aimed to investigate the effect of methionine deficiency on conventional nutrient composition, NO and NOS activity in the liver and kidney, and expression of genes related to the NF-κB signal pathway. One hundred 1-day-old broilers were divided into control and methionine deficiency group, and provided with a standard diet. The methionine-deficient group was fed with a methionine-deficient diet for 42 days. Moisture content, protein content, and crude lipid content were determined by freeze drying, the Kjeldahl method, and the ether extraction method. The concentration of NO was measured using the nitrate reductase method, and the activity of NOS was measured using colorimetry. mRNA expression of related genes in the NF-κB signal pathway was detected by reverse transcription-polymerase chain reaction (RT-PCR). The results showed the contents of crude protein and crude lipid in the liver and kidney of the methionine-deficient group were significantly higher than those in the control group (p<0.05 or p<0.01). There was no significant change in dry matter (p>0.05). Methionine deficiency resulted in significantly increased NO concentration and total nitric oxide synthase (TNOS) activities in the liver and kidney (p<0.01). In contrast, cNOS and inducible iNOS activities significantly decreased (p<0.01). The expression of NF-κB, TNF-α, IFN-γ, IL-1, and IL-6 mRNA, which are related to the NF-κB signal pathway of the methionine-deficient group, were significantly higher than those in the control group (p<0.05 or p<0.01). It is concluded that long-term feeding diets lacking methionine will lead to changes in nutrient composition and inflammatory injury of the liver and kidney. NFκB NF κB 1dayold dayold 1 day old methioninedeficient deficient 4 days drying method colorimetry transcriptionpolymerase transcription polymerase RTPCR. RTPCR RT PCR . (RT-PCR) p<0.05 p005 p 0 05 (p<0.0 p<0.01. p001 p<0.01 01 p<0.01) p>0.05. p>0.05 (p>0.05) TNOS (TNOS (p<0.01) contrast NFκB, κB, TNFα, TNFα TNF α, α TNF-α IFNγ, IFNγ IFN γ, γ IFN-γ IL1, IL1 IL 1, IL-1 IL6 6 IL- longterm long term (RT-PCR p<0.0 p00 (p<0. p>0.0 (p>0.05 (p<0.01 p<0. p0 (p<0 p>0. (p>0.0 p<0 (p< p>0 (p>0. p< (p p> (p>0 (p>

https://doi.org/10.1590/1806-9061-2023-1899

Evaluation of the Performance of a New Pentavalent Vaccine in Poultry
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Muniz, EC

; Freitas, CMB

; Godoi, BC

; Barbosa, CC

; Aoki, SM

; Salles, GBC

; Lima Neto, AJ

; Vogt, JR

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 1 elocation eRBCA-2023-1771

Resumo: En | Texto: En | PDF: En

ABSTRACT Viral inactivated vaccines play a fundamental role in animal heath, both for individual protection and for the induction of antibodies that will be passively transmitted to the progeny. Depending on the field challenges, it is eventually necessary to combine more than one etiology. Inactivated polyvalent vaccines with appropriate combinations to ensure adequate and balanced responses may induce a satisfactory and long-lasting immune response. This study aimed to evaluate the antibody responses of a new oil-based inactivated pentavalent viral vaccine for intramuscular administration containing a newly developed immunomodulator, and compare it with conventional vaccines through antibody responses to the same antigens by ELISA in successive weeks after administration. Mortality rate, weight gain, egg production and hatching were also determined to evaluate safety. The results obtained revealed significant differences (p<0.05) between the group that received the new vaccine and the control group, presenting persistent and long-lasting IgG (IgY) antibodies in specific pathogen free (SPF) chickens for 146 days. In addition, there was a statistically significant (p<0.05) difference in the serological response of the new pentavalent vaccine in commercial poultry in relation to the monovalent commercial vaccines for infectious bronchitis, avian metapneumovirus, Newcastle disease, Gumboro, and reovirus fractions. There was no change in the productive parameters evaluated when compared to the conventional vaccine or the control. heath progeny challenges etiology longlasting long lasting oilbased oil based immunomodulator rate gain safety p<0.05 p005 p 0 05 (p<0.05 IgY (IgY SPF (SPF 14 days addition bronchitis metapneumovirus disease Gumboro fractions p<0.0 p00 (p<0.0 1 p<0. p0 (p<0. p<0 (p<0 p< (p< (p

https://doi.org/10.1590/1806-9061-2023-1771

Resistance Profile of Salmonella spp. to Third Generation Cephalosporins and Quinolones in Chicken Carcasses from Rio de Janeiro, Brazil spp Janeiro
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Costa, GA

; Dias, TS

; Fialho, DS

; Silva, LAM

; Figueira, AA

; Cunha, NC

; Pereira, VLA

; Abreu, DLC

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 2 elocation eRBCA-2023-1888

Resumo: En | Texto: En | PDF: En

ABSTRACT Salmonella spp. is one of the major bacterial causes of foodborne gastroenteritis in humans. The aim of this study was to investigate antimicrobial susceptibility to cephalosporins and quinolones, and to identify the genetic mechanisms related to this resistance in strains of Salmonella spp. Seventy chicken carcass samples were collected from slaughterhouses in the state of Rio de Janeiro, Brazil. The phenotypic profile was detected by the disk-diffusion method and the search for genes encoding betalactamases, and resistance to quinolones was evaluated by PCR. The search for mutations in gyrA and parC was carried out by sequencing these genes. Eleven strains of Salmonella spp. of different serotypes were isolated. All the strains were resistant to at least one of the antimicrobials tested, and 63.64% (7/11) showed resistance to three or more antimicrobials. In the phenotypic test for ESBL production, 36.36% (4/11) of the strains were considered positive. PCR detected the resistance genes bla CMY-2, qnrB, bla CTX-M, and bla TEM. Among the isolates, 45.45% (5/11) simultaneously presented the bla CTX-M, bla TEM, qnrB genes and a mutation (Thr-57→Ser) in parC. Point mutations in the parC gene were detected in all the analyzed samples. Genes such as bla SHV, qnrA, qnrC, qnrD, qnrS, aac(6’)-Ib, qepA, and oqxAB were not detected. The study identified Salmonella spp. resistant to cephalosporins and quinolones, with resistance genes and mutations in parC, highlighting concerns about the adoption of biosecurity measures, responsible use of antimicrobials, and surveillance of resistant strains in the poultry chain. spp humans Janeiro Brazil diskdiffusion disk diffusion betalactamases isolated tested 6364 63 64 63.64 7/11 711 7 11 (7/11 production 3636 36 36.36 4/11 411 4 (4/11 positive CMY2, CMY2 CMY 2, 2 CMY-2 CTXM, CTXM CTX M, M CTX-M TEM isolates 4545 45 45.45 5/11 511 5 (5/11 Thr57→Ser Thr57Ser ThrSer Thr 57→Ser 57 Ser (Thr-57→Ser SHV qnrA qnrC qnrD qnrS aac6Ib, aac6Ib aacIb aac 6 Ib, Ib aac(6’)-Ib qepA measures chain 636 63.6 7/1 71 1 (7/1 363 3 36.3 4/1 41 (4/1 CMY- 454 45.4 5/1 51 (5/1 Thr57 57Ser 63. 7/ (7/ 36. 4/ (4/ 45. 5/ (5/ Thr5 (7 (4 (5 (

https://doi.org/10.1590/1806-9061-2023-1888

10.

Impairment in the Isolation of Mycoplasma synoviae in Mixed Infection with Mycoplasma gallinaceum in Laying Hens
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DS, Fialho

; KSM, Silva

; TS, Dias

; GA, Costa

; GR, Azevedo

; ML, Barreto

; NC, Cunha

; ER, Nascimento

; DLC, Abreu

; VLA, Pereira

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 1 elocation eRBCA-2023-1849

Resumo: En | Texto: En | PDF: En

ABSTRACT Avian mycoplasmosis is a disease of significant economic impact, potentially leading to restrictions on the international trade of poultry products. Mycoplasma synoviae (MS) and Mycoplasma gallisepticum (MG) are well-established as pathogenic, while Mycoplasma gallinaceum (Mgc) is considered commensal. Nevertheless, the latter can exacerbate clinical conditions in cases of co-infections with other pathogens. Due to the slow growth rates of MS and MG, they are susceptible to being outpaced by fast growing mycoplasmas, thereby complicating cultivation, and potentially yielding false-negative results. Thus, this study aimed to report a mixed infection of Mgc and MS in commercial laying hens and the compromised isolation of MS caused by this non-pathogenic mycoplasma. Twenty tracheal samples from chickens were collected, subjected to PCR, and cultured in a modified Frey’s medium. Samples displaying colonies compatible with mycoplasmas underwent three passages to obtain pure cultures. PCR-positive samples for the Mycoplasma spp., and negative ones for MS and MG, were subsequently subjected to DNA sequencing. All clinical samples tested via PCR were positive for MS (20/20) and negative for MG (0/20). During isolation, only five samples exhibited colonies with characteristic mycoplasma growth. However, PCR analysis of these cultures produced negative results for MS and MG, but were positive for Mycoplasma spp. DNA sequencing confirmed that all isolated strains were Mgc. Mgc displayed rapid growth, posing challenges to obtaining MS strains for isolation. The coexistence of MS and Mgc in the respiratory tract of commercial laying hens has the potential of inducing a synergistic effect on respiratory manifestations. impact products (MS (MG wellestablished well established pathogenic (Mgc commensal Nevertheless coinfections co infections pathogens cultivation falsenegative false Thus nonpathogenic non collected Freys Frey s medium PCRpositive spp 20/20 2020 20 (20/20 0/20. 020 0/20 . 0 (0/20) However manifestations 20/2 202 2 (20/2 02 0/2 (0/20 20/ (20/ 0/ (0/2 (20 (0/ (2 (0 (

https://doi.org/10.1590/1806-9061-2023-1849

11.

Quality of Eggs Covered with Biofilms Containing Different Levels of Andiroba Oil and Stored at Room Temperature
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JPF, Rufino

; BS, Araújo

; SB, Carneiro

; ES, Lima

; CC, Guimarães

; JL, Silva Jr

; FAL, Chaves

; MAF, Mendonça

; PQ, Costa Neto

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 1 elocation eRBCA-2023-1887

Resumo: En | Texto: En | PDF: En

ABSTRACT The objective of the current study was to investigate the effects of different levels of andiroba oil (AO) in a bioproduct based on andiroba oil (BBAO) on the physical quality, bacteriological concentration, chemical composition, yolk lipid oxidation, and sensory characteristics when coating eggs and storing them for seven days at room temperature. The eggs were arranged in a completely randomized design, in which treatments consisted of a control group (eggs stored for seven days without the application of BBAO) and eggs covered with biofilms produced with BBAO with different levels of AO (1%, 5%, 10%, and 15%). Each treatment contained 50 eggs, and each egg was considered a replicate. Data collected were subjected to Tukey test and linear or polynomial regression at 0.05 statistical significance. The results indicate that the application of BBAO on eggs stored for 7 days at room temperature resulted in better (p<0.05) conservation of their physical quality and chemical composition, and a reduction (p<0.05) or elimination of bacteriological concentrations. This conservation effect became increasingly pronounced as the concentration of AO in the BBAO increased. However, it is crucial to consider the implications of BBAO on sensory characteristics, as higher concentrations of AO in BBAO lead to a decreased (p<0.05) sensory acceptance of the eggs. Therefore, it was concluded that the use of AO in the bioproduct, especially at high levels, can provide better conservation of the eggs for seven days at room temperature, particularly concerning the physical, chemical, and microbiological characteristics; however, it can also cause significant changes in sensory attributes. (AO (BBAO composition oxidation design 1%, 1 (1% 5 5% 10 10% 15%. 15 15% . 15%) replicate 005 0 05 0.0 significance p<0.05 p005 p (p<0.05 increased However Therefore however attributes 1% (1 00 0. p<0.0 p00 (p<0.0 ( p<0. p0 (p<0. p<0 (p<0 p< (p< (p

https://doi.org/10.1590/1806-9061-2023-1887

12.

Gut Microbiome Revealed the Dominant Microbes Affecting the Feed Efficiency of Wannan Yellow Chicken
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Q, Ji

; K, He

; J, Peng

; P, Chang

; X, Zhu

; Z, Geng

; X, Chen

Brazilian Journal of Poultry Science

Métricas do periódico
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2024, Volume 26 Nº 1 elocation eRBCA-2023-1831

Resumo: En | Texto: En | PDF: En

ABSTRACT Intestinal digestibility can be affected by the interaction between host and gut microbiota, which could influence feed efficiency in poultry. In this study, the performance of 1480 10-week-old Wannan Yellow chickens was recorded for 6 weeks, and the feed conversion ratio (FCR) was calculated. Thirteen 16-week-old chickens (7 in the high and 6 in the low FCR group) were selected for carcass performance, ileum structure, and microbiota composition analysis. The results showed that ileum weight and length were significantly higher (p<0.05) in the high feed conversion ratio (HFCR) group. However, compared with the low feed conversion ratio (LFCR) group, villus length was significantly lower (p<0.05) in the HFCR group. The microbial community between the HFCR and LFCR groups showed no differences, but the dominant microbiota varied between them. The proportions of Acidobacteria were significantly higher in the LFCR group compared with the HFCR group. At the species level, the content of most microbiota in the LFCR group was higher than in the HFCR group and most of these microbiotas are Lactobacillus. According to the results of RDA analysis, Lactobacillus was positively correlated with FCR, ileum length, ileum weight, and ileal villi length. These results suggested that a prominent effect of ileum microbiota on chicken feed efficiency, and that Lactobacillus could be used as a biomarker for improving the growth performance of Wannan yellow chickens. poultry study 148 10weekold weekold 10 week old weeks (FCR calculated 16weekold 16 7 ( structure analysis p<0.05 p005 p 0 05 (p<0.05 (HFCR However (LFCR differences them level 14 1 p<0.0 p00 (p<0.0 p<0. p0 (p<0. p<0 (p<0 p< (p< (p

https://doi.org/10.1590/1806-9061-2023-1831

13.

Classification of Hatchery Eggs Using a Machine Learning Algorithm Based on Image Processing Methods: A Comparative Study Methods
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Çelik, A

; Tekin, E

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 2 elocation eRBCA-2023-1882

Resumo: En | Texto: En | PDF: En

ABSTRACT Eggs are a cornerstone of the food industry. They are a versatile ingredient used in a wide variety of products for their rich protein, vitamin and mineral contents. The use of efficient and high-quality eggs is of great importance in hatcheries, as well as in direct food consumption. The use of quality and efficient eggs in hatcheries has a strong impact on chick, egg, and white meat production. Artificial intelligence-based smart systems usage for product quality classification is growing steadily in productive sectors. In many of these systems, product images are used as input data. The use of such smart systems provides both fast and low-error quality control. Smart systems can quickly and accurately classify new products with algorithms trained by product images. In this study, an intelligent classification system using a machine learning algorithm, which is a subfield of artificial intelligence, was designed to classify the quality and efficiency of chick eggs in a chicken hatchery. Eggs are most commonly classified according to their size as either Large (L), Medium (M) or Small (S). In this study, 425 egg images were obtained using the image acquisition system designed on the hatchery belt system, and the data for each egg was recorded in a dataset. In the next stage, image processing methods (Morphological operations and Hough Transform) and the SVM machine learning algorithm were used together in the proposed model. According to our results, the classification of eggs into L, M, and S was successfully achieved at 98.0% using the SVM algorithm on the dataset. industry protein contents highquality high consumption production intelligencebased intelligence based sectors lowerror low error control study L , (L) M (M S. . (S) 42 dataset stage Morphological Transform model results 980 98 0 98.0 (L (S 4 9 98.

https://doi.org/10.1590/1806-9061-2023-1882

14.

The Effect of Different Transportation Distances and the Application of Electrical Stimulation on Meat Quality in Broilers
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Avcilar, ÖV

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 1 elocation eRBCA-2023-1890

Resumo: En | Texto: En | PDF: En

ABSTRACT The aim of this study was to determine the meat quality characteristics of broilers that were brought to the slaughterhouse from different transport distances and received post-slaughter carcass electrical stimulation. For this purpose, broilers were transported to the slaughterhouse from different distances, from farms belonging to the same enterprise. Broilers coming from different distances were randomly divided into two subgroups after slaughter. Electrical stimulation was applied to one of the groups, on the pectoral muscle. After electrical stimulation, pH measurements of the carcasses were made in both groups in the first 15 minutes. The carcasses were then cut, and the breast and thigh meats were separated. Subsequently, these samples were kept at +4°C for 24 hours, and pH measurements, electrical conductivity, color parameters, cooking loss and texture profile analyses were made. For the breast meat samples, it was determined that the difference in transport distance between the groups caused a difference in crude protein, crude fat, and crude ash values. It was detected that as the transport distance to the slaughterhouse increased, the protein and ash values decreased, while the fat value increased. pH15min was measured to be lower in breast meat samples taken from a closer distance to the farm. In thigh meat samples, the difference in transport distance was significant in crude fat and crude ash values. It was determined that the difference between the groups in the values obtained as a result of the electrical stimulation applied after slaughter were not significant, except for redness values of thigh meat. postslaughter post purpose enterprise muscle 1 minutes cut separated Subsequently 4C C 4 2 hours conductivity parameters increased decreased pHmin min farm

https://doi.org/10.1590/1806-9061-2023-1890

15.

Effect of Blend of Essential Oils on Growth Performance, Carcass Characteristics, Meat Quality, Intestinal Morphology, Serum Biochemistry, and Immune Response of Broiler Chickens Performance Characteristics Quality Morphology Biochemistry
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Khan, MT

; Rehman, MF

; Arslan, M

; Javaid, A

; Farooq, U

; Asad, T

; Nisa, Q

; Azhar, M

; Bughio, E

; Liaqat, S

; Aslam, S

; Ali, F

; Ali, H

; Wadood, F

; Gondal, MA

; Rauf, M

; Fouad, D

; Ataya, FS

; Safdar, M

; Nazir, S

; Magsi, AS

; Qumar, M

Brazilian Journal of Poultry Science

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2024, Volume 26 Nº 1 elocation eRBCA-2023-1853

Resumo: En | Texto: En | PDF: En

ABSTRACT The purpose of this study was to assess the impact of a blend of essential oils from eucalyptus, citrus, bromohexene HCl, thymole and camphor on the growth performance, carcass characteristics, meat quality, intestinal morphology, serum biochemistry, and immune response of broiler chickens. A total of 240 day-old chicks were divided into four groups, each with six replicates containing ten birds. The experiment was conducted under a completely randomized design (CRD). Different concentrations of the oil blend (0mL/kg, 0.15mL/kg, 0.30mL/kg and 0.45mL/kg) were added to the diet. The findings showed that, in comparison to the other groups, the birds that were given a blend of essential oils at concentrations of 0.30 and 0.45 mL/kg showed improved weight gain, feed efficiency, carcass yield, villus height, crypt depth, and greater immune response against Newcastle disease vaccination (p<0.05). Nonetheless, there was no statistically significant difference in the yields of the breast and thighs, feed consumption, mortality, weights of the liver, wing, heart, and gizzard, or abdominal fat between the treatments. The addition of a blend of essential oils at the doses of 0.30 and 0.45 mL/kg significantly lowered the pH of the meat in comparison to the other groups (p<0.05). All blood biochemical markers, including total serum protein, albumin, globulin, glucose, cholesterol, triglyceride, and uric acid, revealed no variations between the treatments. In conclusion, adding 0.30mL/kg of a blend of essential oils to broiler diets may be the optimum level to improve overall performance without adversely affecting the blood biochemical profile. eucalyptus citrus HCl characteristics quality morphology biochemistry chickens 24 dayold day old CRD. CRD . (CRD) 0mL/kg, 0mLkg mLkg 0mL kg mL (0mL/kg 015mLkg 0 15mL 0.15mL/kg 030mLkg 30mL 0.45mL/kg 045mLkg 45mL diet 030 30 0.3 045 45 0.4 gain efficiency yield height depth p<0.05. p005 p p<0.05 05 (p<0.05) Nonetheless thighs consumption mortality liver wing heart gizzard treatments markers protein albumin globulin glucose cholesterol triglyceride acid conclusion profile 2 (CRD 0mL/kg 03 3 0. 04 4 p00 p<0.0 (p<0.05 p0 p<0. (p<0.0 p<0 (p<0. p< (p<0 (p< (p

https://doi.org/10.1590/1806-9061-2023-1853

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