奶牛非应激期日粮添加酵母铬的效果研究

张龙涛; 梁学武; 韩国林; 冯玉兰; 李双飞; 刘庆华

奶牛非应激期日粮添加酵母铬的效果研究

1.
福建省农业科学院动物营养研究中心, 福建, 福州, 350003;
2.
福建农林大学奶牛研究所, 福建, 福州, 350002;
3.
福建长富乳业集团奶牛研究所, 福建, 南平, 353000;
4.
福建长富乳业集团第一牧场, 福建, 南平, 353000

基金项目:

“十五”国家奶业重大科技专项资助项目(2002BA518A21)

详细信息

通讯作者:
梁学武(1960- ),男,教授,从事动物营养与饲料资源研究(E-mail:faulxw2000@yahoo.com.cn).

中图分类号: S823.91
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出版历程
- 收稿日期: 2004-10-12
- 修回日期: 2005-05-08
- 刊出日期: 2005-09-15

Effect of dietary supplementation with yeast chromium on dairy cows during non-stress period

1.
Research Center of Zoo-nutrition, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350003, China;
2.
Institute of Dairy, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;
3.
Institute of Dairy, Fujian Changfu Dairy Group, Nanping, Fujian 353000, China;
4.
No.1 Dairy Farm, Fujian Changfu Dairy Group, Nanping, Fujian 353000, China

摘要

摘要: 将60头泌乳170d左右、平均每头每天产奶量26.00kg的奶牛随机分为5组,对照组饲喂基础日粮,试验Ⅰ、Ⅱ、Ⅲ、Ⅳ组在此基础上分别添加酵母铬0.35mg.kg-1、0.70mg·kg-1、1.05mg·kg-1及1.40mg·kg-1 (以精料量计算),研究非应激期铬添加水平对奶牛产奶量、乳成分和血液激素指标的影响。试验结果表明:①添加酵母铬对产奶量、FCM产量、乳脂率、乳蛋白率及乳总固体物含量影响不显著(P0.05);②酵母铬最高添加组乳中总铬含量0.30mg·kg-1,符合卫生标准;③与对照组相比,试验Ⅳ组FT3(游离三碘甲腺原氨酸)显著下降(P0.05),试验Ⅰ、Ⅱ、Ⅲ组FT3较对照组有下降的趋势,但差异不显著(P0.05),酵母铬对血清FT4(游离甲状腺索)、皮质醇浓度及胰岛索活性均无显著影响(P0.05)。
- 奶牛 /
- 非应激期 /
- 酵母铬 /
- 产奶量 /
- 乳成分 /
- 激素指标
Abstract: To study the effects of dietary supplementation for yeast chromium, sixty dairy cows with an average daily milking 26.00 kg at 170 day after calving were divided into 5 groups, the milk yield and component were evaluated, and the plasma hormones were assessed- The level of supplementation was 0.35, 0.70, 1.05 and 1.40 mg ·kg-1as yeast chromium in concentrates for treatment Ⅰ, Ⅱ, Ⅲ, Ⅳ, respectively, and non-chromium applied was control group.Results showed that:Ⅰ There were no significant effects on daily milking, fat corrected milk (FCM), and the content of milk fat, protein, and solid compounds (P0.05) for all treatment groups.Ⅱ The chromium content in milk was lower than 0.30mg · kg-1, which met the national standard for fresh milk (NY 5045-2001).③ Comparing with control group, FT3 content in treatment Ⅳ was reduced significantly (P 0.05), but observed only a tendency of decreasing in treatment Ⅰ,Ⅱ,Ⅲ (P0.05).Moreover, supplementation of chromium had no significant effects on FT4, cortisol and insulin (P0.05).
- Dairy cow /
- Non-stress period /
- Yeast chromium /
- Milk yield /
- Milk content /
- Hormone traits

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参考文献(3)

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