| 日粮阴阳离子平衡对泌乳中后期奶牛生产性能的影响 |
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| 引用本文： | 李秋凤,李建国,李运起,韩永利.日粮阴阳离子平衡对泌乳中后期奶牛生产性能的影响[J].畜牧与兽医,2005,37(12):9-12. |
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| 作者姓名： | 李秋凤 李建国 李运起 韩永利 |
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| 作者单位： | 河北农业大学动物科技学院,河北,保定,071001 |
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| 基金项目： | 国家“十五”奶牛重大专项一华北农区奶业现代化集成与产业化示范（2002BA518A10）,河北省教育厅科技攻关项目. |
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| 摘 要： | 试验选择泌乳中后期奶牛15头,随机分成3组,每组5头,采用3×3重复拉丁方设计,分别饲喂3种不同阴阳离子平衡水平的日粮。其中对照组A(DCAB为DM 77 m eq/kg),B组(DCAB为DM 175 m eq/kg),C组(DCAB为DM 325 m eq/kg)。结果表明,DCAB对热应激奶牛的生产性能具有显著影响,其中B组和C组的产奶量分别比对照组提高6.6%(P>0.05)和0.1%(P>0.05);而4%标准乳产量则分别提高8.3%(P<0.05)和0。DCAB对奶牛的乳脂率和乳蛋白率无显著影响。说明在泌乳中后期当DCAB为175 m eq/kgDM,饲喂效果最佳。
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| 关 键 词： | 日粮阴阳离子平衡(DCAB) 热应激 奶牛 生产性能 |
| 文章编号： | 0529-5130（2005）12-0009-04 |
| 收稿时间： | 07 24 2005 12:00AM |
| 修稿时间： | 2005-07-24 |
Effects of dietary cation-anion balance on performance of heat-stressed dairy cows at the midstage of lactation |
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| LI Qiu-feng,LI Jian-guo,LI Yun-qi,HAN Yong-li.Effects of dietary cation-anion balance on performance of heat-stressed dairy cows at the midstage of lactation[J].Animal Husbandry & Veterinary Medicine,2005,37(12):9-12. |
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| Authors: | LI Qiu-feng LI Jian-guo LI Yun-qi HAN Yong-li |
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| Abstract: | This experiment was conducted with 15 cows in mid-lactation,assigned randomly into 3 groups,the control group A Supplemented: with a DCAB of DM 77 meq/kg,B with a DCAB of DM 175 meq/kg and C with a DCAB of DM 325 meq/kg each with 5 replicates in a replictated 3×3 Latin squar design to study the effects of dietary cation-anion balance(DCAB) on performance.Increased DCAB affected production performance significantly.Compared with the control group,the milk yield in B and C group increased by 6.6%(P>0.05)and 0.1%(P>0.05);4% fat corrected milk yield 8.3%(P<0.05)and 0%(P>0.05),respectively.Increased DCAB had no significant effects on milk fat and protein percentage.It was concluded that the diet with a DCAB of DM 175 meq/kg in mid-lactation period had the best effect. |
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| Keywords: | dietary cation-anion balance heat stress cows performance |
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