黑白花成年母牛绝食代谢的研究

为了研究我国黑白花奶牛的能量代谢规律,本试验用传统开路式呼吸面具装置对4头空怀干奶的成年黑白花母牛不同季节的绝食代谢产热量进行了4次测定,结果表明,我国黑白花空怀干奶成年母牛在中立温度区附近的绝食代谢产热量为72.052Kcal/kgw~(0.75)24hr.,在中立温度区以外,随气温的升高和降低绝食代谢产热量都有不同程度的增加,基本与国外黑白花奶牛的能量代谢规律一致,与我国奶牛饲养标准中的参数相符。

Studies on the fasting metabolism of adult Chinese Black and White Dairy cows

Heat production of four non-pregnant, adult dry cows in fasting state was measured with traditional open circuit musk apparatus. The average heat production of the four cows was 72.052 kcal/kg W0.75/24 hr. in the ther neutral environment.