Kim C D, Lamont S J, Rothschild M F
Department of Animal Science, Iowa State University, Ames 50011.
Poult Sci. 1989 Apr;68(4):464-9. doi: 10.3382/ps.0680464.
Body weights at 8, 20, and 32 wk, total egg production, average egg weight, egg production during a 4-wk period, and age at first egg laid were measured in 652 female progeny of heterozygous x heterozygous (F1) or heterozygous x homozygous (backcross) matings of the Iowa State University S1 White Leghorn chicken line. Hens were classified by B-haplotypes (B1 or B19) and haplotype-associated immune responses (high or low) to the amino acid polymer glutamic acid-alanine-tyrosine (Ir-GAT). Body weights were affected by parental mating group, sire, and dam, but they were not affected by haplotype (B/Ir-GAT). Sexual maturity and egg production were not affected by any factors except hatch. Average egg weight was affected by parental mating group, sire, dam, and genotype, with homozygous B19B19 birds having a heavier mean egg weight (41.71 g +/- .20) than homozygous B1B1 Ir-GAT-high and - low birds (40.8 g +/- .38 and 39.2 g +/- .54, respectively); mean egg weights of heterozygous birds were approximately intermediate to the others.
对爱荷华州立大学S1白来航鸡系杂合×杂合（F1）或杂合×纯合（回交）交配产生的652只雌性后代，测量了8周、20周和32周时的体重、总产蛋量、平均蛋重、4周期间的产蛋量以及初产蛋鸡的年龄。母鸡根据B单倍型（B1或B19）以及对氨基酸聚合物谷氨酸-丙氨酸-酪氨酸（Ir-GAT）的单倍型相关免疫反应（高或低）进行分类。体重受亲本交配组、父本和母本的影响，但不受单倍型（B/Ir-GAT）的影响。性成熟和产蛋量除受孵化影响外，不受任何因素影响。平均蛋重受亲本交配组、父本、母本和基因型的影响，纯合B19B19鸡的平均蛋重（41.71克±0.20）比纯合B1B1 Ir-GAT高和低的鸡（分别为40.8克±0.38和39.2克±0.54）更重；杂合鸡的平均蛋重约介于其他两者之间。
