...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Animal Feed Science and Technology >Influence of rumen-protected lysine supplementation on growth performance and plasma amino acid concentrations in growing cattle offered the maize stalk silage/maize grain-based diet
【24h】

Influence of rumen-protected lysine supplementation on growth performance and plasma amino acid concentrations in growing cattle offered the maize stalk silage/maize grain-based diet

机译：瘤胃保护的赖氨酸补充对玉米秸秆青贮饲料/玉米谷物饮食的生长牛生长性能和血浆氨基酸浓度的影响

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

The effects of rumen-protected lysine (RPLys) supplementation on growth performance, plasma amino acid (AA) concentrations and blood biochemical indices were investigated in a 84-d growth trial using 56 Limousin x Fuzhou F1 crossbred bulls (13 mo of age, average initial BW=372.9 +/- 22.4 kg) fed the maize stalk silage/maize grain-based diet. All animals were fed individually the same basal diet containing 500 g/kg maize stalk silage, 340 g/kg ground maize grain and 160 g/kg dry mixed concentrate (DM basis). Incremental amounts (0, 5, 10 or 15 g/d) of RPLys were added to the basal diet. Increasing supplemental RPLys level did not alter (P>0.05) dietary dry matter intake, but increased average daily gain (quadratic effect; P=0.036) and feed efficiency (quadratic effect; P=0.030) with maximum values achieved at 10 g/d RPLys supplementation. Supplementing dietary RPLys linearly (P=0.009) increased plasma Lys and quadratically (P=0.014) decreased plasma urea nitrogen, suggesting that added RPLys has been effectively utilized for tissue growth and Lys seems to be a first-limiting amino acid for growing cattle fed the maize stalk silage/maize grain-based diet. In summary, when growing cattle were fed maize silage/maize grain-based diets adequate in MP (MP=780.9 g/d) but inadequate in Lys, their average daily gain and feed efficiency were promoted by dietary supplementation of RPLys
机译：在56天的利穆赞x福州F1杂种公牛（年龄13个月，平均）下，在84天的生长试验中研究了添加瘤胃保护的赖氨酸（RPLys）对生长性能，血浆氨基酸（AA）浓度和血液生化指标的影响。最初的体重= 372.9 +/- 22.4千克）以玉米秸秆青贮饲料/玉米谷物为基础饲喂。所有动物均单独饲喂相同的基础饲料，其中含有500 g / kg玉米秸秆青贮饲料，340 g / kg玉米粉磨碎的谷物和160 g / kg干混合精矿（以DM为基础）。将RPLys的增量（0、5、10或15 g / d）添加到基础饮食中。补充RPLys水平的增加并没有改变（P> 0.05）饮食干物质的摄入量，但是增加了平均日增重（二次效应; P = 0.036）和饲料效率（二次效应; P = 0.030），最大值达到了10 g / d RPLys补充。线性补充膳食RPLys（P = 0.009）可增加血浆Lys含量，二次补充（P = 0.014）可降低血浆尿素氮，表明添加的RPLys已被有效地用于组织生长，而Lys似乎是饲喂长势牛的首要氨基酸玉米秸秆青贮饲料/玉米谷物饮食。总之，当以牛青贮饲料/玉米谷物为基础的日粮饲喂MP（MP = 780.9 g / d）但Lys不足的玉米饲喂日粮时，通过RPLys的日粮添加可提高其平均日增重和饲料效率

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