摘要
将围产期健康奶牛30头随机分为3组,分别于产前28 d开始饲喂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)和NRC标准减少20%日粮(能量摄入80%组),产后各组奶牛均饲喂标准日粮,至产后56 d结束,观察干奶期不同能量摄入水平对产后奶牛生产性能的影响。结果表明,高能量组奶牛产后干物质采食量和产奶量均显著低于其他2组,并且体质量消耗明显。由此认为,干奶期能量摄入水平是影响和调节产后干物质摄入量、产乳量和能量平衡状态的重要因素。
The present experiment was conducted to investigate the effect of energy intake level during dry period on the performance of postpartum diary cows. Thirty healthy periparturient cows were randomly allocated into three groups and fed 100% energy diet（NRC standard diets）, 120% energy diet and 80% energy diet ,respectively,from 28 th day before parturition. All the cows were offered the lactation ration ad libitum until 56 th day after parturition. The results showed that the cows fed high energy diet during the dry period have the significant decline in DM intake,milk production and BWoas compared with the cows fed 80% energy diet and 100% energy diet. The data suggest that DM intake level in dry period should play an important role in the regulation of DM intake,milk production and BW in postpartum.
出处
《中国兽医学报》
CAS
CSCD
北大核心
2006年第2期216-218,共3页
Chinese Journal of Veterinary Science
基金
国家自然基金重点资助项目(30230260)
中国博士后科学基金资助项目(2004036400)
关键词
奶牛
能量摄入
生产性能
干奶期
diary cows ,energy intake
performance
dry period
