| 半胱胺对奶牛生产性能及血清激素水平的影响 |
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| 引用本文： | 夏伦志,詹凯,熊国远,吴东,蔡东.半胱胺对奶牛生产性能及血清激素水平的影响[J].安徽农业科学,2004,32(3):534-536. |
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| 作者姓名： | 夏伦志 詹凯 熊国远 吴东 蔡东 |
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| 作者单位： | 1. 安徽省农业科学院畜牧兽医研究所,安徽,合肥,230031
2. 安徽省兽药饲料监察所 |
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| 摘 要： | 选择 3 2头泌乳母牛 ,随机分为 4组 ,每组 8头 ,饲养 47d。在各组奶牛精料中按每天每头分别添加 0、2 0、3 0、40g半胱胺添加剂CT -2 0 0 0 ,研究半胱胺对奶牛生产性能及血液激素指标的影响。试验结果表明 :①精料中添加半胱胺显著提高奶牛产奶量5 .0 1% ,降低料奶比 (P <0 .0 5 ) ,对精料采食量无显著影响 (P >0 .0 5 ) ;②添加半胱胺有提高无脂固形物、乳脂与乳糖趋势 ,但差异不显著 (P >0 .0 5 ) ;③添加半胱胺 2 0、3 0、40g可分别显著 (P <0 .0 5 )提高血清胰岛素水平 19.82 %、2 3 .73 %与 3 0 .0 0 % (P <0 .0 1) ,但对血清中T3、T4 有降低趋势 (P >0 .0 5 ) ;④精料中每日每头添加CT -2 0 0 0 2 0g较 3 0、40g剂量对提高奶牛生产性能效果更佳
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| 关 键 词： | 半胱胺 生产性能 乳成分 血清激素水平 泌乳奶牛 |
| 文章编号： | 0517-6611(2004)03-0534-03 |
Effects of Cysteamine on Performance and Serumhormone Levels in Lactating Dairy Cows |
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| Xia Lunzhi et al.Effects of Cysteamine on Performance and Serumhormone Levels in Lactating Dairy Cows[J].Journal of Anhui Agricultural Sciences,2004,32(3):534-536. |
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| Authors: | Xia Lunzhi |
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| Abstract: | In order to study the effects of cysteamine on performance and serum hormone levels in dairy cows, Thirty-two lactating dairy cows were randomly divided into 4 groups (8*!cows per group), The concentrate of each group was supplemented with 0,20,30, and 40*!g/(d·herd) cysteamine additive (CT-2000) fed for 47 days.The results showed:①Addition of cycteamine from CT-2000 increased (P<0.05)milk yield by 5.01% and decreased (P<0.05),concentrate/milk yield ratio, but average daily concentrate intake was not affected by cysteamine (P>0.05). ②Dietary cysteamine supplementation slightly increased contents of non-fat solids, milk fat and lactose in milk (P>0.05).③Dietary cysteamine supplementation increased significantly serum insulin level by 19.82%20*!g/(d·herd)],23.73%30*!g/(d·herd)]and 30.00 % 40*!g/(d·herd)] respectively, but slightly decreased (P>0.05) the level of T 3,T 4 in serum.④In this study, the optimum supplemental level of cysteamine additive was 20*!g/(d·herd). |
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| Keywords: | Cysteamine Performance Milk composition Serum hormone level Lactating dairy cows |
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