Kousiakis D, Andrews L D, Stamps L
Poult Sci. 1985 May;64(5):795-802. doi: 10.3382/ps.0640795.
Two strains of dwarf and two of normal broiler breeder hens were compared during the laying period for the following production parameters: egg number, hen-day and hen-housed egg production, mortality, feed consumption, egg weight, egg shell quality, hatchability, and fertility. Though the dwarf hens matured earlier, the number of eggs produced during the laying period did not differ (P less than .05) from that of the normal hens. The dwarf hens consumed 25.6% less feed per dozen eggs but produced smaller eggs. Mortality was higher for the dwarf hens during the laying period than for normal hens. The normal hens had an advantage over the dwarf hens in percent hatchability of all eggs set and percent fertility, but the percent hatchability of fertile eggs did not differ between the two genetic groups. No differences were found in egg shell quality of the two groups of chickens.
在产蛋期，对两株矮小型和两株正常型肉种母鸡的以下生产参数进行了比较：产蛋数、母鸡日产蛋量和入舍母鸡产蛋量、死亡率、饲料消耗量、蛋重、蛋壳质量、孵化率和受精率。虽然矮小型母鸡成熟较早，但产蛋期的产蛋数与正常母鸡没有差异（P小于0.05）。矮小型母鸡每打鸡蛋的饲料消耗量少25.6%，但产蛋较小。矮小型母鸡产蛋期的死亡率高于正常母鸡。正常母鸡在所有入孵蛋的孵化率百分比和受精率百分比方面比矮小型母鸡有优势，但两个遗传组之间受精蛋的孵化率百分比没有差异。两组鸡的蛋壳质量没有发现差异。
