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当前位置: 首页 > 文章 > 不同能量摄入水平对围产期奶牛生产性能及血浆瘦素浓度影响的研究 畜牧与兽医 2005,37 (2) 1-4
Position: Home > Articles > Effects of energy intake on plasma concentration of leptin and milk production in peripartum diary cows Animal Husbandry & Veterinary Medicine 2005,37 (2) 1-4

不同能量摄入水平对围产期奶牛生产性能及血浆瘦素浓度影响的研究

作  者：
牛淑玲;李艳飞;王哲;张乃生;李红梅;张才;左之才;刘彩霞;董风仙
单  位：
吉林省长春市示范奶牛场;中国人民解放军军需大学军事兽医系;东北农业大学动物医学院;沈阳农业大学畜牧兽医学院;四川农业大学动物科技学院临床医学系
关键词：
能量;围产期奶牛;干物质摄入;瘦素浓度;生产性能
摘  要：
将健康的围产期奶牛30头随机分为3组, 每组10头。其中Ⅱ组为对照组, Ⅰ组和Ⅲ组分别为试验组。Ⅰ、Ⅱ、Ⅲ组均于产前28d开始分别饲喂NRC标准减少20%日粮(能量摄入80%组)、NRC标准日粮(能量摄入100%组)、NRC标准增加20%日粮(能量摄入120%组), 产后各组奶牛均饲喂标准日粮, 至产后56d结束。观察妊娠后期奶牛不同能量水平对干物质摄入量、产奶量、乳成分及体重等生产性能和血浆瘦素浓度的影响。试验结果表明: 奶牛产后干物质摄入量、产奶量、乳中蛋白质、乳脂率和非固体物质为Ⅰ组高于Ⅱ组、Ⅱ组又高于Ⅲ组(P>0 05 ); 同时血浆瘦素浓度为Ⅰ组高于Ⅱ组、Ⅱ组又高于Ⅲ组, 经统计分析组间差异极显著(P<0 01) 或差异显著(P<0 05); 但产前28~14d瘦素浓度组间差异均不显著(P>0 05 ), 此后Ⅰ组和Ⅲ组差异显著(P<0 05 )。此外, Ⅰ组体重消耗最小, Ⅲ组体重消耗最大, 各组间差异极显著(P<0 01)。可见, 围产期健康奶牛不同能量水平与干物质摄入量、产奶量、乳成分、体重等生产性能及血浆瘦素浓度之间存在着密切的关系。
译  名：
Effects of energy intake on plasma concentration of leptin and milk production in peripartum diary cows
作  者：
NIU Shu-Ling~1,LI Yan-fei~2,WANG Zhe~(1*),et al (1.Quartermaster University of PLA, Faculty of Military Veterinary Nedicine, Changchun 130062, China; 2.College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China)
关键词：
energy;perinata cows;dry matter intakes;leptin;performance
摘  要：
The objective of this study is to determine the relationship between energy intake, plasma concentration of leptin and milk production. At 28 days before parturition, thirty healthy perinatal cows were randomly allocated into three groups and respectively fed with 100% energy diet (NRC standard diets), 120% energy diet and 80% energy diet. After parturition, all the cows were offered with criteria day provisions until 56 days postpartum. The results showed that dry matter intake, plasma concentration of leptin and milk production in the cows fed with 80% enengy diet during the advanced pregency parturition were significantly highger than those in the cows fed with 100% energy diet and 120% energy diet. They were significant higher in the cows fed with 100% energy diet than in the cows fed with 120% energy diet (P<0.01 or (P<0.05).) we concluded that reducing energy intake during the advanced pregenancy of diary cows could enhance dry matter intake, milk production, protein and fat in milk and plasma concentration of leptin, and alleviate negative energy equilibrium of postpartum.

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