Martin A, Dunnington E A, Gross W B, Briles W E, Briles R W, Siegel P B
Department of Poultry Science and Veterinary Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061.
Poult Sci. 1990 Jun;69(6):871-8. doi: 10.3382/ps.0690871.
The selection of chickens for high (HA) and for low (LA) antibody titers to sheep erythrocytes has produced differences in the selected trait and in the correlated responses in body weight, egg production, and erythrocyte antigens. The response to selection continued through 14 generations. There was considerable divergence between lines for erythrocyte alloantigen systems, including the major histocompatibility complex. Females from Line LA were heavier as juveniles and lighter as adults, matured at a younger age, and had higher egg production than those from Line HA. There were no differences between lines for the incidence of defective eggs laid-except for the percentage of eggs with double-yolks, which was greater for Line LA than HA. The phenotypic correlations of antibody response with growth and with reproductive traits were very low; the genetic correlations were moderate to high for most of these traits.
针对绵羊红细胞高抗体滴度（HA）和低抗体滴度（LA）对鸡进行选育，已在所选性状以及体重、产蛋量和红细胞抗原的相关反应方面产生了差异。选育反应持续了14代。品系间在红细胞同种异体抗原系统（包括主要组织相容性复合体）方面存在相当大的差异。与HA品系的鸡相比，LA品系的雌性雏鸡体重更重，成年后体重更轻，成熟更早，产蛋量更高。除了双黄蛋的比例LA品系高于HA品系外，两个品系所产畸形蛋的发生率没有差异。抗体反应与生长及繁殖性状的表型相关性非常低；而对于大多数这些性状，遗传相关性为中度到高度。
