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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.1
- 수록면
- 815 - 826 (12page)
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초록· 키워드
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The objective of the current study was to investigate the effects of stocking density (SD) and dietary supplementation of vitamin C on growth performance, meat quality, intestinal permeability, and stress indicators in broiler chickens. The study was conducted using a completely randomized design with a 2 × 2 factorial arrangement consisting of 2 different SD and 2 supplemental levels of dietary vitamin C. A total of 1,368 Ross 308 broiler chickens of 21 days of age with similar body weights (BW) were randomly allotted to 1 of 4 treatments with 6 replicates each. Different numbers of birds per identical floor pen (2.0 m × 2.4 m) were used to create 2 different SD levels of low SD (9 birds/m2) and high SD (18 birds/m2). The basal diet was formulated with no supplemental vitamin C to meet or exceed nutrient recommendations of the Ross 308 manual. The other diet was prepared by supplementing 200 mg/kg vitamin C in the basal diet. The study lasted for 14 days. At the end of the study, 3 male birds per replicate were selected to analyze meat quality, intestinal permeability, and stress indicators such as blood heterophil:lymphocyte (H:L) and feather corticosterone (CORT) concentrations. Results indicated that there were no interactions between different SD and dietary supplementation of vitamin C for all measurements. For the main effects of SD, birds raised at high SD had less (p < 0.01) BW, BW gain, and feed intake with increasing stress responses including greater blood H:L and feather CORT concentrations (p < 0.01) than those raised at low SD. Transepithelial electrical resistance in the jejunal mucosa was decreased (p < 0.05) at high SD, indicating an increase in intestinal permeability. However, the main effects of dietary supplementation of 200 mg/kg vitamin C were insignificant for all measurements. In conclusion, high SD of broiler chickens impairs growth performance and intestinal barrier function with increasing stress responses. However, dietary supplementation of vitamin C may have little beneficial effects on broiler chickens raised at the high SD condition used in the present study.
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등록된 정보가 없습니다.
참고문헌 (32)
참고문헌 신청
S. Buijs / 2009 / Stocking density effects on broiler welfare: Identifying sensitive ranges for different indicators / Poultry Science 88(8):1536~1543
Diego Puron / 1995 / Broiler Performance at Different Stocking Densities / Journal of Applied Poultry Research 4(1):55~60
I. Estevez / 2007 / Density Allowances for Broilers: Where to Set the Limits? / Poultry Science 86(6):1265~1272
S. Zuowei / 2011 / Stocking density affects the growth performance of broilers in a sex-dependent fashion / Poultry Science 90(7):1406~1415
R Selvam / 2017 / Effect of Vitamin E Supplementation and High Stocking Density on the Performance and Stress Parameters of Broilers / Revista Brasileira de Ciência Avícola 19(4):587~594
Diego Puron / 1995 / Broiler Performance at Different Stocking Densities / Journal of Applied Poultry Research 4(1):55~60
I. Estevez / 2007 / Density Allowances for Broilers: Where to Set the Limits? / Poultry Science 86(6):1265~1272
S. Zuowei / 2011 / Stocking density affects the growth performance of broilers in a sex-dependent fashion / Poultry Science 90(7):1406~1415
R Selvam / 2017 / Effect of Vitamin E Supplementation and High Stocking Density on the Performance and Stress Parameters of Broilers / Revista Brasileira de Ciência Avícola 19(4):587~594
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