Silversides F G, Crawford R D
Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Canada.
Poult Sci. 1991 Apr;70(4):702-8. doi: 10.3382/ps.0700702.
Two trials were conducted with two different lines of chickens to determine whether a gene for sex-linked imperfect albinism (sal-s) affected various egg production traits. In a line with relatively good egg production, sexual maturity was delayed for albino compared with nonalbino hens, but overall egg production by albinos was higher. The increased production resulted in eggs with reduced yolk and shell weights. Albumen weights were not affected, and because the eggs from albinos were smaller, Haugh unit scores were higher. In another trial, sexual maturity of hens of a heavy line was not affected by the genotype, but these hens did not receive controlled lighting during the growing period. Egg production curves of these hens were very similar to those seen in the first trial. The laying house mortality rates were not affected by the sal-s gene, despite several periods of high environmental temperature. These trials suggest that sal-s could be used in a sex-linked cross of commercial layers or broiler breeders.
进行了两项试验，使用了两个不同品系的鸡，以确定一个与性连锁不完全白化病（sal-s）相关的基因是否会影响各种产蛋性状。在一个产蛋性能相对较好的品系中，与非白化母鸡相比，白化母鸡的性成熟延迟，但白化母鸡的总产蛋量更高。产蛋量的增加导致蛋的蛋黄和蛋壳重量减轻。蛋白重量不受影响，并且由于白化母鸡产的蛋较小，哈夫单位评分较高。在另一项试验中，一个重型品系母鸡的性成熟不受基因型影响，但这些母鸡在生长期间没有接受光照控制。这些母鸡的产蛋曲线与第一项试验中观察到的非常相似。尽管有几个时期环境温度较高，但产蛋舍的死亡率不受sal-s基因影响。这些试验表明，sal-s可用于商品蛋鸡或肉鸡育种者的性连锁杂交。
