| 不同硒源对泌乳中期荷斯坦奶牛生产性能、抗氧化性能及营养物质表观消化率的影响 |
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| 引用本文： | 王建,孙鹏,刘威,卜登攀,刘士杰,张开展.不同硒源对泌乳中期荷斯坦奶牛生产性能、抗氧化性能及营养物质表观消化率的影响[J].动物营养学报,2017,29(4). |
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| 作者姓名： | 王建 孙鹏 刘威 卜登攀 刘士杰 张开展 |
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| 作者单位： | 1. 中国农业科学院北京畜牧兽医研究所,动物营养国家重点实验室,北京 100193;2. 中国农业科学院北京畜牧兽医研究所,动物营养国家重点实验室,北京 100193;中国农业科学院与世界农用林业中心农用林业与可持续畜牧业联合实验室,北京 100193;湖南畜产品质量安全协同创新中心,长沙 410128;3. 中国饲料工业协会,北京,100125;4. 北京中地种畜有限公司,北京,100028 |
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| 基金项目： | "十二五"科技支撑计划，中国农业科学院科技创新工程，国家高层次人才特殊支持计划 |
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| 摘 要： | 本试验旨在研究不同硒源对泌乳中期荷斯坦奶牛生产性能、抗氧化性能及营养物质表观消化率的影响。试验选取45头产奶量、胎次、泌乳日龄相近的健康中国荷斯坦奶牛,随机分成3组,每组15头。对照组饲喂不添加硒的基础饲粮,无机硒(SS)组饲喂基础饲粮+0.3 mg/kg亚硒酸钠,有机硒(SO)组饲喂基础饲粮+0.3 mg/kg蛋氨酸硒羟基类似物。试验期91 d,其中预试期7 d,正试期84 d。结果表明:1)饲粮中添加硒对奶牛的干物质采食量、产奶量及乳成分没有显著影响(P0.05)。2)与对照组相比,SO组血清总抗氧化能力和谷胱甘肽过氧化物酶活性显著升高(P0.05),血清丙二醛含量显著降低(P0.05),但SS组以上指标与对照组没有显著差异(P0.05)。3)各组中性洗涤纤维、酸性洗涤纤维和干物质的表观消化率差异不显著(P0.05)。与对照组相比,SO组有机物、粗蛋白质及粗脂肪的表观消化率显著提高(P0.05);SS组有机物和粗蛋白质的表观消化率提高,但差异不显著(P0.05)。综上所述,饲粮添加不同硒源对泌乳中期荷斯坦奶牛的生产性能没有影响,但与对照组相比,硒添加组的抗氧化性能和营养物质的表观消化率提高,而且SO组的效果明显优于SS组。
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| 关 键 词： | 硒源 奶牛 生产性能 抗氧化性能 营养物质消化率 |
Effects of Difference Selenium Sources on Performance,Antioxidant Performance and Nutrient Apparent Digestibility of Middle Lactating Holstein Dairy Cows |
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| Abstract: | The objective of this study was to evaluate the difference selenium sources on performance, antioxi-dant performance and nutrient apparent digestibility of middle lactating Holstein dairy cows. Forty five healthy Holstein dairy cows with similar milk yield, parity and days in milk were randomly assigned to three groups with 15 cows per group. Cows in the control group were fed a basal diet without selenium supplementation, cows in the inorganic selenium ( SS) group were fed the basal diet+0.3 mg/kg sodium selenite, and the others in the organic selenium ( SO) group were fed the basal diet+0.3 mg/kg hydroxy-analogue of selenomethionine ( HMSeBA) . The experiment lasted for 91 days with a pretrial period of 7 days and a experimental period of 84 days. The results showed as follows: 1 ) dietary supplementation of selenium did not influence dry matter in-take, milk yield and milk composition ( P>0.05) . 2) Compared with the control group, the serum total antiox-idant capacity and glutathione peroxides activity of SO group were significantly improved ( P<0.05) , and the serum malondialdehyde content was significantly decreased ( P<0.05) , however, there were no differences in the above indices between control group and SS group ( P>0.05) . 3) There were no differences in the apparent digestibility of neutral detergent fiber, acid detergent fiber and dry matter among all groups ( P>0.05) . Com-pared with the control group, the apparent digestibility of organic matter, crude protein and ether extract of SO group was significantly increased (P<0.05), besides, the apparent digestibility of organic matter and crude protein of SS group was increased ( P>0.05) . These results indicate that dietary supplemented with difference selenium sources do not influence the performance middle lactating Holstein dairy cows. However, compared with the control group, the antioxidant performance and nutrient apparent digestibility are improved by supple-mentation of selenium, and the effect of SO group is better than that of SS group. |
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| Keywords: | selenium sources dairy cows performance antioxidant performance nutrient apparent digesti-bility |
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