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复合矿物舔块对全封闭舍饲奶牛生产性能及健康的影响
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摘要:
选择60头不同产奶水平德系荷斯坦泌乳牛进行试验,研究全封闭饲养条件下添加复合矿物舔块对奶牛产奶性能、乳品质及牛体机能的影响.结果表明,试验组奶产量较对照组平均提高4.85%(P>0.05),其中中产组效果最佳,较对照组提高12.1%(P<0.05);试验组牛奶体细胞数较对照组平均降低50%左右(P<0.01),奶牛异食癖消失,被毛状况得到明显改善,趾蹄病、乳房炎病例分别较对照组减少了92.8%和54.0%;该复合矿物添块对不同生产水平奶牛的添加效果表现出一定的局限性.
关键词:  复合矿物舔块  全封闭牛舍  产奶量  乳成分  健康指标
DOI:
基金项目:国家科技部重大科技专项基金,安徽省科技攻关项目?
Effects of multi-nutrient mineral blocks on performance and health parameters of cows in dry lot housing
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Abstract:
To evaluate additional effects of compound nutrient block,an experiment group(EG)and a control group(CG)were designed.There are three milk yield levels in each group,including high-yielding,middle-yielding and low-yielding cows.Compared to CG,the milk yields of the cows in EG averagely increased by 4.85%.In the middle-yielding cows,the daily milk yield was the highest,increased by 12.1%(P<0.05),but the somatic cell number in milk averagely decreased by 50.0%(P<0.01),the allotriophagia significantly decrease...
Key words:  multi-nutrient mineral blocks  dry lot housing  milk yield  milk ingredient  health parameters  

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