Laurin D E, Touchburn S P, Chavez E R, Chan C W
Poult Sci. 1985 Nov;64(11):2131-5. doi: 10.3382/ps.0642131.
Three genetic lines of broilers - a commercial line (Ross X Arbor-Acres), and lines selected for low abdominal fat (lean line), and high abdominal fat (fat line) were fed one of two isocaloric and isonitrogenous purified diets differing in total fat content (2 vs. 9%). Carcass composition (crude protein, ether-extract, ash, and total dry matter content) was determined on four broilers/line/diet at 21 days of age and at 1 kg body weight. Carcass protein and ether-extract were not significantly (P less than .05) affected by diet at 21 days of age or at 1 kg weight. Carcass ash was significantly (P less than .01) affected by diet at 21 days of age but not at 1 kg body weight. Genetic line of broiler significantly (P less than .05) affected carcass protein, ether-extract, and ash at 21 days of age and at 1 kg body weight. Lean line broilers had a significantly (P less than .05) higher percentage of carcass protein and a significantly (P less than .05) lower percentage of carcass ether-extract than the fat line or commercial broilers.
选用了三个品系的肉鸡——一个商业品系（罗斯×爱拔益加），以及分别选育的低腹脂品系（瘦肉型品系）和高腹脂品系（脂肪型品系），给它们饲喂两种等热量、等氮且总脂肪含量不同（2%对9%）的纯化日粮中的一种。在21日龄和体重达到1千克时，测定每个品系/日粮组合中四只肉鸡的胴体组成（粗蛋白、乙醚提取物、灰分和总干物质含量）。在21日龄或体重达到1千克时，日粮对胴体蛋白和乙醚提取物没有显著（P＜0.05）影响。在21日龄时，日粮对胴体灰分有显著（P＜0.01）影响，但在体重达到1千克时没有影响。肉鸡的遗传品系在21日龄和体重达到1千克时，对胴体蛋白、乙醚提取物和灰分有显著（P＜0.05）影响。与脂肪型品系或商业品系肉鸡相比，瘦肉型品系肉鸡的胴体蛋白百分比显著（P＜0.05）更高，胴体乙醚提取物百分比显著（P＜0.05）更低。
