Lilburn M S, Leach R M, Buss E G, Martin R J
Growth. 1982 Summer;46(2):171-81.
Genetic selection for mature abdominal fat pad size has resulted in establishing lean and obese lines of chickens. Although the selection was made with mature hens, studies with the progeny showed that obesity could develop as early as 6 weeks of age. Body weights in the two lines diverged by 7 weeks of age although significant differences in feed intake were not seen until the fourteenth week. A pair-feeding study was conducted from 7 through 17 weeks of age. The results showed that pair-feeding greatly reduced the lipid deposited in the obese line. The two strains differed substantially in carcass lipid content, but the proportion of total body lipid contributed by the carcass, viscera, and abdominal fat pad was similar in both lines.
对成熟腹部脂肪垫大小进行基因选择已培育出了瘦型和肥胖型品系的鸡。尽管选择是针对成熟母鸡进行的，但对后代的研究表明，肥胖最早在6周龄时就可能出现。两品系的体重在7周龄时开始出现差异，不过直到第14周才观察到采食量有显著差异。在7至17周龄期间进行了配对饲养研究。结果表明，配对饲养大大减少了肥胖品系中沉积的脂质。两个品系的胴体脂质含量有很大差异，但胴体、内脏和腹部脂肪垫在总体脂中所占的比例在两个品系中相似。
