Brake J, Garlich J D, Carter T A
Poult Sci. 1984 Dec;63(12):2497-500. doi: 10.3382/ps.0632497.
Leghorn laying hens were induced to molt by a combination of photoperiod reduction and fasting for 14 days, during which time the hens lost 31.5% of their initial body weight. The hens were then assigned to one of four diets containing 1.0, 1.75, 2.5, or 3.5% calcium until egg production resumed. The 3.5% calcium diet was fed to all treatments from the resumption of 5% egg production. Postmolt egg production and feed conversion were not affected significantly. Egg weight, shell weight, and egg specific gravity were not affected consistently. It was concluded that high dietary calcium levels immediately postfast have no adverse effect on postmolt performance.
来航蛋鸡通过光照周期缩短和禁食14天的组合方式诱导换羽，在此期间母鸡体重下降了初始体重的31.5%。然后将母鸡分配到四种钙含量分别为1.0%、1.75%、2.5%或3.5%的日粮中，直至恢复产蛋。从产蛋率恢复到5%起，所有处理组均饲喂3.5%钙的日粮。换羽后产蛋性能和饲料转化率未受到显著影响。蛋重、蛋壳重量和蛋比重未受到一致影响。得出的结论是，禁食后立即摄入高钙日粮对换羽后性能没有不利影响。
