中国农业科学Issue(24)：5205-5216,12.DOI:10.3864/j.issn.0578-1752.2013.24.015
饲粮代谢能和粗蛋白水平对黄羽肉鸡生产性能和肉品质的影响
Effects of Levels of Dietary Metabolizable Energy and Crude Protein on Growth Performance and Meat Quality of Chinese Yellow Broilers Between 43 and 63 Days
摘要
Abstract
[Objective] The effects of levels of dietary metabolizable energy (ME), crude protein (CP) and their interaction on growth performance and meat quality of Chinese yellow broilers between 43 and 63 days were determined. [Method] Two dietary ME levels, 11.93 MJ·kg-1 and 12.98 MJ·kg-1, and three dietary CP levels, 14.6%, 15.8%and 17.0%, were examined using a 2 × 3 factorial arrangement of treatments. A total of 840 43-d-old fast-growing Lingnan Yellow male broilers were randomly assigned into 6 treatments, each had four replicates and each replicate had 35 ones. All birds were fed diets with the same ratios of lysine and methionine to CP, and other nutrient levels except ME and CP, and were reared in indoor floor pens with ad libitum access to pellet feed and water for 21 d. [Result]Birds fed 12.98 compared to 11.93 MJ·kg-1 ME treatment had greater final body weight at 63 d, weight gain, higher pH, breast meat color a*value, lactic acid content of thigh muscle and plasma free fatty acid concentration, and lower FCR, b*value and plasma lipoprotein lipase activity (P<0.05). Diet containing 17%CP decreased FCR and increased breast meat b*value compared to 15.8%, 14.6%treatment (P<0.05), and increased semi-evisecrated percentage and decreased plasma TG content with respect to 14.6%treatment (P<0.05), decreased glutamic acid content in breast muscle compared to 15.8%treatment (P<0.05). There were significant interactions between ME and CP levels on thigh muscle diameter and density (P<0.05), on glutamic acid content (P<0.05) and on plasma free fatty acid content (P<0.05). [Conclusion] The optimal dietary ME and CP levels for Lingnan yellow broilers aged between 43 and 63d were 12.98 MJ·kg-1 and 17%, respectively, based on growth performance and carcass traits, and 12.98 MJ·kg-1 and 15.8%, respectively, based on meat quality.关键词
黄羽肉鸡/生产性能/肉品质/代谢能/粗蛋白Key words
metabolizable energy/crude protein/growth performance/meat quality/Chinese yellow broilers引用本文复制引用
蒋守群,蒋宗勇,郑春田,林映才,洪平,陈芳,阮栋..饲粮代谢能和粗蛋白水平对黄羽肉鸡生产性能和肉品质的影响[J].中国农业科学,2013,(24):5205-5216,12.基金项目
国家公益性行业（农业）科研专项（200903006）、国家肉鸡产业技术体系（CARS-42）、广东省自然科学基金团队项目 （）
