摘要
本研究旨在探讨不同的能量和蛋白质水平对内蒙古细毛羊种公羊不同生理状态下体重和繁殖性能的影响,确定其能量和蛋白质的需要量。采用饲养试验、消化代谢试验和配种试验相结合的方法,测定了成年种公羊能量和蛋白质代谢的基础数据。根据公羊的体重变化、羊毛生长、睾丸发育和精液品质、配种成绩以及血液理化指标,综合评价不同营养水平对种公羊需要的满足程度,用回归析因法分别计算出了不同体重的内蒙古细毛羊种公羊在非配种期和配种期代谢能和粗蛋白质的需要量。
The effects of the dfferent protein and energy intakes on the body weight and the reproductive performance of adult Inner Mongolia fine wool breeding rams were studied to estimate their energy and protein requirements during the different physiological stages. The basic data on the metabolism and utilization of energy and protein of the breeding rams were obtained by feeding experiments, digestion and metabolism trials and breeding tests.The requirements of energy and protein for the breeding rams were determined synthetically,according to live—weight change, wool growth, testicular size, semen quality,breeding performance and the concentration of protein and glucose in the serum. Then the requirements of ME and CP for the breeding rams in the non-mating period and the mating period were derived from the regression equations.
关键词
细毛羊
公羊
种羊
蛋白
需要量
breeding rams, energy requirement, protein requirement
