动物营养学报 >

2021 , Vol. 33 >Issue 11: 6257 - 6265

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.11.026

反刍与草食动物营养与饲料 RUMINANT AND HERBIVORE NUTRITION AND FEED

过瘤胃赖氨酸和过瘤胃蛋氨酸对母牦牛泌乳性能及犊牛生长性能的影响

  • 曹涵文 ,
  • 张成福 ,
  • 信金伟 ,
  • 朱勇 ,
  • 张强 ,
  • 姜辉 ,
  • 次旦央吉 ,
  • 鲜莉莉 ,
  • 陈晓英
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  • 1. 西藏自治区农牧科学院, 省部共建青稞和牦牛种质资源与遗传改良国家重点实验室, 拉萨 850000;
    2. 西藏自治区农牧科学院畜牧兽医研究所, 拉萨 850009
曹涵文(1989-),男,山东威海人,助理研究员,硕士,动物营养与饲料科学专业。E-mail:751261399@qq.com

收稿日期: 2021-04-08

  网络出版日期: 2021-11-10

基金资助

省部共建青稞和牦牛种质资源与遗传改良国家重点实验室自主课题（XZNKY-2020-C-007Z01）；西藏自治区重点研发计划项目（XZ201901NB01）；国家肉牛牦牛产业技术体系（CARS-37）

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Effects of Rumen-Protected Lysine and Rumen-Protected Methionine on Lactation Performance of Female Yaks and Growth Performance of Calves

  • CAO Hanwen ,
  • ZHANG Chengfu ,
  • XIN Jinwei ,
  • ZHU Yong ,
  • ZHANG Qiang ,
  • JIANG Hui ,
  • CI Danyangji ,
  • XIAN Lili ,
  • CHEN Xiaoying
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  • 1. State Key Laboratory of Hulless Barley and Yak Germplasm Resources and Genetic Improvement, Tibet Academy of Agricultural and Animal Sciences, Lhasa 850000, China;
    2. Institute of Animal Science and Veterinary, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850009, China

Received date: 2021-04-08

  Online published: 2021-11-10

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摘要

本试验旨在研究不同添加水平过瘤胃赖氨酸（RPLys）和过瘤胃蛋氨酸（RPMet）对牦牛泌乳性能及犊牛生长性能的影响。试验采用单因素随机设计，选择体尺、体重相近的健康的泌乳期带犊母牦牛40头，平均分为4组，每组各10头，对照组饲喂基础饲粮，试验组在基础饲粮中分别添加5、10、15 g/d RPLys和RPMet （RPLys ： RPMet=3 ： 1），预试期为7 d，正试期为42 d。分别于饲喂起始与结束时，测定泌乳牦牛产奶量、乳成分、犊牛体尺指标和生长性能指标。结果表明：1）与对照组相比，饲粮中添加10 g/d RPLys和RPMet能够显著提高泌乳牦牛乳蛋白含量（P<0.05），对产奶量、乳脂率及乳中乳糖、总固形物、氨基酸含量影响不显著（P>0.05）。2）与对照组相比，饲粮中添加10 g/d RPLys和RPMet能够显著提高犊牛胸围、体驱指数、末重、总增重、平均日增重及肥度指数（P<0.05），对体高、体斜长、管围、体长指数影响不显著（P>0.05）。由此可见，饲粮中添加10 g/d RPLys和RPMet （RPLys ： RPMet=3 ： 1）能够提升泌乳牦牛的泌乳性能，并对犊牛的生长性能产生积极影响。

关键词： 过瘤胃赖氨酸; 过瘤胃蛋氨酸; 泌乳牦牛; 犊牛; 体尺指标; 生长性能

本文引用格式

曹涵文 , 张成福 , 信金伟 , 朱勇 , 张强 , 姜辉 , 次旦央吉 , 鲜莉莉 , 陈晓英 . 过瘤胃赖氨酸和过瘤胃蛋氨酸对母牦牛泌乳性能及犊牛生长性能的影响[J]. 动物营养学报, 2021 , 33(11) : 6257 -6265 . DOI: 10.3969/j.issn.1006-267x.2021.11.026

Abstract

This experiment was aimed to study the effects of different levels of rumen-protected lysine (RPlys) and rumen-protected methionine (RPMet) on lactation performance of lactating yak and growth performance of calves. Forty healthy lactating female yaks with similar body weight were selected and divided into four groups, and all female yaks had calves. The control group was fed a basic diet, and the experimental group was fed the basic diet with 5,10,15 g/d RPlys and RPMet (RPlys:RPMet=3:1). The pretest period was 7 days and the trial period was 42 days. At the beginning and end of feeding, milk yield and milk composition of lactating yaks, body size index and growth performance indexes of calves were measured. The results showed as follows:1) adding 10 g/d RPlys and RPMet to the diet could increase the milk protein content of lactating yaks (P<0.05), but had no significant effects on milk yield, milk fat percentage, lactose, total solids and amino acids contents (P>0.05). 2) The addition of 10 g/d RPlys and RPMet in the diet could improve the chest girth, body index, final weight, total weight gain, average daily gain and fatness index of calves (P<0.05), but had no significant effects on body height, body length, tube circumference and body length index (P>0.05). It is concluded that adding 10 g/d RPlys and RPMet to the diet can improve the lactation performance of lactating yaks and have positive effects on calves' performance.

Key words： rumen-protected lysine; rumen-protected methionine; lactating yaks; calves; body size index; growth performance

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