Lilburn M S, Ngiam-Rilling K, Leung F C, Smith J H
Proc Soc Exp Biol Med. 1986 Jul;182(3):328-35. doi: 10.3181/00379727-182-42348.
Sex-linked dwarf male (dw/dw) and female (dw/-) chickens from a commercial meat strain, grew significantly slower than genetically normal broilers (Dw/Dw). The differences were evident at 2 weeks of age and they remained constant with age, at least through 8 weeks. The dwarfs in turn grew significantly faster than genetically normal (Dw/Dw) but slow-growing roaster strain chicks. Heterozygous (Dw/dw) normal, fast-growing male broilers grew significantly faster than the normal and roaster chicks but weighed 8% less than the normal broilers at 8 weeks. Abdominal fat accretion was greatest in the dwarf chicks and least in the slow-growing roaster strain when comparisons were made at the same age and the same body weight. Pectoralis muscle growth was greater in the broiler strain when equal age and weight comparisons were made. Gastrocnemius muscle growth, however, was greatest in the slow-growing roaster chicks.
来自商业肉用品种的性连锁矮小雄鸡（dw/dw）和雌鸡（dw/-），生长速度明显比基因正常的肉鸡（Dw/Dw）慢。这些差异在2周龄时就很明显，并且随着年龄增长一直保持不变，至少持续到8周龄。反过来，矮小品种鸡比基因正常（Dw/Dw）但生长缓慢的烤用型品系雏鸡生长速度明显更快。杂合子（Dw/dw）正常、生长快速的雄肉鸡比正常和烤用型雏鸡生长速度明显更快，但在8周龄时比正常肉鸡体重轻8%。在相同年龄和相同体重进行比较时，矮小雏鸡腹部脂肪堆积最多，生长缓慢的烤用型品系雏鸡腹部脂肪堆积最少。在相同年龄和体重进行比较时，胸肌生长在肉鸡品系中更大。然而，腓肠肌生长在生长缓慢的烤用型雏鸡中最大。
