Menge H, Frobish L T
Poult Sci. 1976 Sep;55(5):1724-31. doi: 10.3382/ps.0551724.
A study was conducted to investigate the effect of early dietary restriction of protein and/or energy on the subsequent reproductive ability of the tom. One hundred 8-week old Large White turkey toms (April hatch) were placed at random into four floor pens of 25 each and fed the following diets: group 1, 20.6% protein with 2,4 Mcal. M.E./kg. diet 8-12 weeks, 15.3% protein with 2.68 Mcal. 12-16 weeks, 10.4% protein with 2.85 Mcal. 16-24 weeks; group 2, 20.3% protein with 2.9 Mcal. 8-12 weeks, 14.8% protein with 2.98 Mcal. 12-16 weeks, 9.8% protein with 3.27 Mcal. 16-24 weeks; group 3, 22% protein with 2.4 Mcal. 8-12 weeks, 18.9% protein with 2.57 Mcal. 12-16 weeks, 16.3% protein with 2.81 Mcal. 16-24 weeks; group 4 (control), 22% protein with 2.91 Mcal. 8-12 weeks, 19% protein with 3.03 Mcal. 12-16 weeks, 15.9% protein with 3.17 Mcal. 16-24 weeks. Beginning with the 25th weeks all toms received a 14.3% protein diet with 2.8 Mcal. The restriction of energy significantly reduced the percentage of males producing semen, and the restriction of energy significantly reduced the percentage of males producing semen, and the restriction of energy and both protein and energy significantly depressed semen volume per male in comparison with the average produced by the control males. Other reproductive traits were not affected by early dietary controls.
进行了一项研究，以调查早期蛋白质和/或能量饮食限制对雄性火鸡后续繁殖能力的影响。将100只8周龄的大白火鸡雄性（4月孵化）随机放入四个地面围栏中，每个围栏25只，并饲喂以下日粮：第1组，8 - 12周，蛋白质含量20.6%，代谢能2.4兆卡/千克日粮；12 - 16周，蛋白质含量15.3%，代谢能2.68兆卡；16 - 24周，蛋白质含量10.4%，代谢能2.85兆卡；第2组，8 - 12周，蛋白质含量20.3%，代谢能2.9兆卡；12 - 16周，蛋白质含量14.8%，代谢能2.98兆卡；16 - 24周，蛋白质含量9.8%，代谢能3.27兆卡；第3组，8 - 12周，蛋白质含量22%，代谢能2.4兆卡；12 - 16周，蛋白质含量18.9%，代谢能2.57兆卡；16 - 24周，蛋白质含量16.3%，代谢能2.81兆卡；第4组（对照组），8 - 12周，蛋白质含量22%，代谢能2.91兆卡；12 - 16周，蛋白质含量19%，代谢能3.03兆卡；16 - 24周，蛋白质含量15.9%，代谢能3.17兆卡。从第25周开始，所有雄性火鸡都饲喂蛋白质含量14.3%、代谢能2.8兆卡的日粮。与对照雄性火鸡产生的平均精液量相比，能量限制显著降低了产生精液的雄性百分比，能量限制以及蛋白质和能量的双重限制显著降低了每只雄性的精液量。其他繁殖性状不受早期饮食控制的影响。
