| 黑白花生长母牛绝食代谢和不同运动量的能量代谢研究 |
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| 引用本文： | 蒋永清,张晓明,周建民,冯仰廉.黑白花生长母牛绝食代谢和不同运动量的能量代谢研究[J].中国畜牧杂志,1987(4). |
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| 作者姓名： | 蒋永清 张晓明 周建民 冯仰廉 |
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| 作者单位： | 北京农业大学畜牧系
(蒋永清，张晓明，周建民)，北京农业大学畜牧系(冯仰廉) |
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| 摘 要： | 为了研究我国黑白花生长母牛的能量代谢规律和探讨运动对奶牛能量代谢的影响,笔者用传统开路式面具装置对6、9、12、15、18月龄(各3头)的青年母牛在中立温度区内进行了绝食代谢试验,并对3头22月龄青年母牛运动状态下的产热量进行了测定。结果表明,黑白花青年母牛中立温度区内的绝食代谢产热量FHP(kcal/24hr)=277.5w~(0.653);不同速度水平行走的能量消耗分别为0.3316±0.0101cal/kgm(V=0.95±0.04米/秒)和0.4625±0.0462cal/kgm(V=1.54±0.03米/秒)。
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STUDIES ON THE FASTING METABOLISM AND THE METABOLISM OF MOVEMENT AT DIFFERENT SPEEDS OF THE BLACK AND WHITE HEIFERS |
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| Abstract: | The fasting heat production of heifers aged 12 to 18 months at fasting body weights of 190 to 320 kg was 277.5 w0.75 per day. The regression of fasting heat production on age of 9 to 18 months was.
FM ( kcal ) =150.92 exp ( -0.0405x ) w0.75
(n = 12, r= -0.8353)
where x = age in months and w = fasting body weight in kilograms. The ene-rgy costs of walking were 0.3316 + /- 0.0101 cal/kg.m and 0.4625 +/-0.0462 cal/kg.m at speeds of 0.95+/-0.04 m/sec and 1.54 + /-0.03 m/sec respecti-vely. |
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