• 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 >Rumen development and growth of Balouchi lambs offered alfalfa hay pre- and post-weaning
【24h】

Rumen development and growth of Balouchi lambs offered alfalfa hay pre- and post-weaning

机译：Balouchi羔羊的瘤胃发育和生长为断奶前后提供了苜蓿干草

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

The consumption of solid feed is essential for successful transition from a pre-ruminant to a functional digestive tract. Lambs fed starter rations containing highly fermentable carbohydrates often experience dramatic changes in concentrations of rumen and blood metabolites. The optimal amount of roughage required in the diet of pre-ruminant animals is still unclear. The objective of this study was to determine the effect of feeding alfalfa hay on performance and rumen development in young Balouchi lambs. In a completely randomized design, 30 lambs were fed one of three experimental diets consisting of a control, without alfalfa hay (C), a diet containing 7.5% alfalfa hay (A1), and a diet containing 15% alfalfa hay (A2). Lambs fed A1 and A2 diets had lower dry matter intake during the pre-weaning period (P < 0.01) and overall (P = 0.02), but feed conversion ratio and average daily gain were not affected by feeding alfalfa hay. Concentration of beta-hydroxybutyric acid was higher in C compared with the A1 and A2 groups (P < 0.01). Concentrations of glucose and non-esterified fatty acids did not differ among the groups of animals. Feeding alfalfa hay reduced thickness of the rumen epithelial keratinized layer (P = 0.04) and increased thickness of muscular layer (P = 0.05). We concluded that including 15% alfalfa hay in the starter diet could reduce thickness of the keratinization layer and increase muscularity of rumen wall without adverse effects on growth and performance of newborn lambs.
机译：固体饲料的消耗对于从反刍动物成功过渡到功能性消化道至关重要。羔羊饲喂含高发酵碳水化合物的日粮通常会导致瘤胃和血液代谢物浓度发生显着变化。反刍动物饮食中所需的最佳粗饲料量尚不清楚。这项研究的目的是确定饲喂苜蓿干草对幼小Balouchi羔羊生产性能和瘤胃发育的影响。在完全随机的设计中，给30只羔羊喂食三种实验日粮之一，其中包括不含苜蓿干草的对照组（C），含有7.5％苜蓿干草的日粮（A1）和含有15％苜蓿干草的日粮（A2）。饲喂A1和A2日粮的羔羊在断奶前期（P <0.01）和总体（P = 0.02）的干物质摄入量较低，但是饲喂苜蓿干草不会影响饲料转化率和平均日增重。与A1和A2组相比，C中的β-羟基丁酸浓度更高（P <0.01）。葡萄糖和非酯化脂肪酸的浓度在各组动物之间没有差异。饲喂苜蓿干草可减少瘤胃上皮角质化层的厚度（P = 0.04）和增加肌肉层的厚度（P = 0.05）。我们得出的结论是，在日粮中添加15％的苜蓿干草可以减少角质化层的厚度并增加瘤胃壁的肌肉性，而对新生羔羊的生长和生长性能没有不利影响。

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