Effect of housing system on carcass composition, meat quality, digestive morphometry, and leg bone dimensions of Ross 308 parent broilers

Wegner, Marcin; Kokoszyński, Dariusz; Kotowicz, Marek; Krajewski, Krzysztof

doi:10.1016/j.psj.2023.103384

Poultry Science

2024

DOI: 10.1016/j.psj.2023.103384

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Effect of housing system on carcass composition, meat quality, digestive morphometry, and leg bone dimensions of Ross 308 parent broilers

Marcin Wegner,

Dariusz Kokoszyński,

Marek Kotowicz

et al.

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2024

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Cited by 2 publications

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Effects of rhamnolipid replacement of chlortetracycline on growth performance, slaughtering traits, meat quality and antioxidant function in broilers

Shi,

Zhou,

et al. 2024

J Sci Food Agric

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BACKGROUNDRhamnolipids (RLS) are surfactants that improve the growth performance of poultry by improving the absorption of nutrients. This study aims to investigate the effects of RLS replacement of chlortetracycline (CTC) on growth performance, slaughtering traits, meat quality, antioxidant function and nuclear‐factor‐E2‐related factor 2 (Nrf2) signaling pathway in broilers. A total of 600 one‐day‐old Arbor Acres chicks were randomly assigned to five groups with eight replicates in each group, raised for 42 days. Broilers were respectively fed a basal diet with no CTC or RLS, 75 mg kg−1 CTC, and 250, 500, 1000 mg kg−1 RLS.RESULTSDietary supplementation with RLS linearly increased the average daily gain, average daily feed intake, carcass yield, eviscerated yield, ether extract, enhanced total superoxide and glutathione peroxidase (GPx) activities, overexpressed the relative expressions of Nrf2, heme oxygenase 1, Copper/zinc superoxide dismutase, Manganese superoxide dismutase, GPx and catalase and decreased the lightness value at 24 h, drip loss and malondialdehyde contents of broilers (P < 0.05). Compared with the control group, broilers fed 1000 mg kg−1 RLS reduced the drip loss and broilers fed 500 mg kg−1 RLS increased muscle crude fat content (P < 0.05). Compared with the CTC group, dietary supplementation with 1000 mg kg−1 RLS increased eviscerated yield (P < 0.05).CONCLUSIONRLS could improve growth performance, crude fat content, meat quality and antioxidant capacity and activate relative expression of genes in the Nrf2 signaling pathway in broilers. It could be used as an antibiotic substitute in diets and the recommended supplemental dose of RLS in feed of broilers is 1000 mg kg−1. © 2024 Society of Chemical Industry.

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Effects of rhamnolipid replacement of chlortetracycline on growth performance, slaughtering traits, meat quality and antioxidant function in broilers

Shi,

Zhou,

et al. 2024

J Sci Food Agric

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Influence of genotype on carcass composition, metric traits of the digestive system and leg bones of laying hens after the egg-production season

Wegner,

Kokoszynski,

Piwczyński

et al. 2024

Anim. Prod. Sci.

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Context The genotype of laying hens is one of the most important factors influencing their carcass composition and anatomical features. Aims The aim of the present study was to compare two genotypes of laying hens, Lohmann Brown and Lohmann White, after the laying period. Methods The experimental material consisted of 26 carcasses obtained after slaughtering spent laying hens at the age of 83 weeks. Key results The genotype of the birds had a significant (P < 0.05) effect on carcass weight, and the proportion (%) of the breast muscle, leg muscle and gizzard weight. Significant correlations were also found between bodyweight and the weight of the stomach, proventriculus, liver and spleen. The origin of the laying hens also had a significant impact on the length of the sections on intestinal segments, namely, jejunum, ileum and colon. Significant differences in the correlations between bodyweight and length of duodenum, jejunum and rectum were also found. The compared hybrids of laying hens differed significantly in the dimensions of the femur and tibia. Lohmann Brown (LB) hens were characterized by higher greatest length, medial length, smallest breadth of the corpus, and greatest breadth of the distal end of the femur compared with Lohmann White (LW) hens. Dimensions of the tibia greatest length, axial length, smallest breadth of the corpus, greatest breadth of the distal end and greatest depth of the distal end in LB hens were also significantly (P < 0.05) higher than those in LW hens. Conclusions The results showed that the genotype of laying hens tested after the laying period influenced carcass weight and muscle percentage, as well as differentiated the birds in terms of dimensions of individual segments of the digestive tract, femur, and tibia bones. Implications The results of this research may be useful for consumers of laying hen carcasses and people interested in poultry anatomy.

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Effect of housing system on carcass composition, meat quality, digestive morphometry, and leg bone dimensions of Ross 308 parent broilers

Cited by 2 publications

References 34 publications

Effects of rhamnolipid replacement of chlortetracycline on growth performance, slaughtering traits, meat quality and antioxidant function in broilers

Effects of rhamnolipid replacement of chlortetracycline on growth performance, slaughtering traits, meat quality and antioxidant function in broilers

Influence of genotype on carcass composition, metric traits of the digestive system and leg bones of laying hens after the egg-production season

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