Stevens V I, Blair R, Salmon R E
Poult Sci. 1984 Aug;63(8):1571-85. doi: 10.3382/ps.0631571.
A study was undertaken to determine the effects of maternal and poult nutrition on poult growth and bone development through to market age. Nicholas Large White turkey hens (200) were fed diets with 300, 900, or 2700 IU vitamin D3/kg from day-old to 37 weeks of age. Male poults (649 from Hatch 1 and 555 from Hatch 2) were fed diets containing .6 or 1.2% Ca; .4 or .8% available P; and 300, 900, or 2700 IU vitamin D3/kg to 4 weeks (Hatch 1) or 2 weeks of age (Hatch 2) in a complete factorial design. All Hatch 2 poults were given a "therapeutic" diet from 2 to 4 weeks, followed by normal grower diets from 4 to 24 weeks of age. Increasing the level of vitamin D3 in the hen diet increased weight at hatching and at 2 and 4 weeks, decreased mortality from 0 to 2 weeks, and increased bone ash percent and breaking strength and decreased the severity of rickets score at 2 weeks. Increasing the levels of Ca, P, and vitamin D3 in the poult diet gave reduced mortality from 0 to 2 weeks, increased weight at 2 and 4 weeks, increased bone ash percent and breaking strength, and decreased severity of rickets score at 2 and 4 weeks. Carcass fleshing score at 24 weeks was improved with 1.2% Ca. Conformation score and percent grade A carcasses increased linearly with level of vitamin D3 in the starter diet and were also improved by increasing the vitamin D3 in the breeder diet.
进行了一项研究，以确定母体和雏禽营养对雏禽生长及直至上市日龄的骨骼发育的影响。200只尼古拉斯大白火鸡母鸡从雏鸡到37周龄饲喂含300、900或2700 IU维生素D3/kg的日粮。来自孵化批次1的649只雄性雏禽和来自孵化批次2的555只雄性雏禽采用完全析因设计，饲喂含钙0.6%或1.2%、有效磷0.4%或0.8%以及300、900或2700 IU维生素D3/kg的日粮至4周龄（孵化批次1）或2周龄（孵化批次2）。所有孵化批次2的雏禽在2至4周饲喂“治疗性”日粮，随后在4至24周龄饲喂正常生长日粮。母鸡日粮中维生素D3水平的增加使雏鸡出壳时、2周龄和4周龄时体重增加，0至2周龄死亡率降低，2周龄时骨灰百分比、断裂强度增加，佝偻病评分严重程度降低。雏禽日粮中钙、磷和维生素D3水平的增加使0至2周龄死亡率降低，2周龄和4周龄时体重增加，骨灰百分比和断裂强度增加，2周龄和4周龄时佝偻病评分严重程度降低。含钙1.2%时，24周龄时胴体肉质评分得到改善。雏鸡日粮中维生素D3水平升高，24周龄时胴体外形评分和A级胴体百分比呈线性增加，种鸡日粮中维生素D3水平升高也有改善。
