• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Tropical Animal Health and Production >Effect of bromelain on milk yield, milk composition and mammary health in dairy goats
【24h】

Effect of bromelain on milk yield, milk composition and mammary health in dairy goats

机译：菠萝蛋白酶对奶山羊产奶量，乳成分和乳腺健康的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A 7 month prospective cohort study was designed to determine if feeding bromelain to dairy goats influenced the MSCC, milk yield, milk composition and the incidence of IMI. Forty-four clinically normal goats from 2nd to 6th parities were studied. Daily bromelain dosage was 7.4 grams/animal (185-mg/Kg weight). Samples for diagnostic bacteriology were collected from each udder half every 2 weeks. Samples for MSCC and composition were obtained every 42 days. Milk yield was also recorded every 42 days. Bromelain affected milk protein and fat but not MSCC, milk yield or milk lactose. Bromelain did not decrease the MSCC in healthy goats. Milk protein and fat increased in the bromelain treated group (P < 0.01), which is important for dairymen because premiums are paid milk fat and protein content. No clinical mastitis was detected in the goats for the total study period and incidence rate of subclinical IMI was 5.7%. Relative risk was 1.50 (0.28 < RR 0.05). In addition, the use of pineapple by-products could be especially important in tropical countries were pineapple waste seems to be a pollution problem.
机译：设计了一项为期7个月的前瞻性队列研究，以确定向奶山羊饲喂菠萝蛋白酶是否会影响MSCC，牛奶产量，牛奶成分和IMI的发生率。研究了第二至第六胎的44只临床正常山羊。菠萝蛋白酶的每日剂量为7.4克/动物（185毫克/千克体重）。每两周从每半个乳房收集用于诊断细菌学的样品。每42天获取一次MSCC和组成样本。每42天也记录一次牛奶产量。菠萝蛋白酶影响乳蛋白和脂肪，但不影响MSCC，乳产量或乳乳糖。菠萝蛋白酶不会降低健康山羊的MSCC。菠萝蛋白酶处理组的牛奶蛋白质和脂肪增加（P <0.01），这对于奶牛场来说很重要，因为保费是支付的牛奶脂肪和蛋白质含量。在整个研究期间，未在山羊中检测到临床乳腺炎，亚临床IMI的发生率为5.7％。相对风险为1.50（0.28

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号