Su H, Silversides F G, Villeneuve P
Département des Sciences Animales, Université Laval, Ste-Foy, Québec, Canada.
Poult Sci. 1994 Dec;73(12):1813-21. doi: 10.3382/ps.0731813.
The beneficial effects of the gene for imperfect albinism on egg production were investigated under commercial conditions. In one line (Line 8) but not in another (Line 3), hen-day egg production of albinos from 46 to 75 wk of age was higher than that of nonalbinos (76.1 vs 72.6%) resulting in higher overall hen-day (71.1 vs 69.3%, P < .08) and hen-housed (276.3 vs 263.6 eggs) egg production by albino hens. Egg production of Line 8 albinos was not different than that of one of two commercial strains (Strain A) included as a control (76.1 vs 75.6%, P > .05). In data from Lines 3 and 8 combined, sexual maturity of albinos was delayed by 3.0 d. Mortality was higher for albinos than nonalbinos (3.6 vs 1.8%) during the first 2 wk of brooding and lower for albinos (5.8 vs 8.9%) during the laying period. Eggs from albinos weighed less (53.8 vs 55.3 g), had smaller yolks (16.9 vs 17.6 g) and shells (5.16 vs 5.27 g), and firmer albumen (5.9 vs 5.6 mm). The results suggest that the gene produces beneficial effects on egg production under commercial conditions.
在商业条件下研究了不完全白化基因对产蛋性能的有益影响。在一个品系（8系）中，46至75周龄白化母鸡的日产蛋率高于非白化母鸡（76.1%对72.6%），而在另一个品系（3系）中则不然，这使得白化母鸡的总体日产蛋率（71.1%对69.3%，P <.08）和入舍母鸡产蛋量（276.3枚对263.6枚）更高。8系白化母鸡的产蛋量与作为对照的两个商业品系之一（A品系）没有差异（76.1%对75.6%，P>.05）。综合3系和8系的数据，白化母鸡的性成熟延迟了3.0天。在育雏的前2周，白化母鸡的死亡率高于非白化母鸡（3.6%对1.8%），而在产蛋期，白化母鸡的死亡率较低（5.8%对8.9%）。白化母鸡产的蛋重量较轻（53.8克对55.3克），蛋黄（16.9克对17.6克）和蛋壳（5.16克对5.27克）较小，蛋白更紧实（5.
