动物营养学报 >

2021 , Vol. 33 >Issue 4: 2116 - 2125

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.04.031

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

夏季补饲对放牧条件下泌乳牦牛生产性能及血液生理、生化、抗氧化指标的影响

  • 曹旭亮 ,
  • 刘虎 ,
  • 杨果 ,
  • 何金峰 ,
  • 肖玲 ,
  • 龙瑞军 ,
  • 周建伟
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  • 1. 兰州大学草地农业科技学院, 草地农业生态系统国家重点实验室, 兰州 730000;
    2. 中国科学院西北生态环境资源研究院, 兰州 730000;
    3. 武威市天祝藏族自治县安远镇畜牧兽医站, 天祝 733203;
    4. 杭州康德权饲料有限公司, 杭州 310000
曹旭亮(1994-),男,甘肃临洮人,硕士研究生,从事反刍动物营养研究。E-mail:caoxl19@lzu.edu.cn

收稿日期: 2020-08-25

  网络出版日期: 2021-04-15

基金资助

青海省重点研发与转化计划项目（2018-SF-145）；2019年中共甘肃省委组织部陇原青年创新创业人才项目

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Effects of Summer Supplementation on Performance and Parameters of Physiological, Biochemical and Antioxidant in Blood of Lactating Yaks under Grazing Condition

  • CAO Xuliang ,
  • LIU Hu ,
  • YANG Guo ,
  • HE Jinfeng ,
  • XIAO Ling ,
  • LONG Ruijun ,
  • ZHOU Jianwei
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  • 1. State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China;
    2. Northwest Institute of Eco-Environment and Resource, Chinese Academy of Sciences, Lanzhou 730000, China;
    3. Anyuan Animal Husbandry and Veterinary Station in Tianzhu Tibetan Autonomous County, Tianzhu 733203, China;
    4. Hangzhou King Technology Feed Co., Ltd., Hangzhou 310000, China

Received date: 2020-08-25

  Online published: 2021-04-15

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摘要

本试验旨在研究夏季补饲对放牧条件下泌乳牦牛生产性能及血液生理、生化、抗氧化指标的影响。试验采用2×2双因子设计，选用24头体重[（218.0±19.5）kg]相近的健康带犊泌乳牦牛，随机分为4个组（每组6头），即自然放牧组（NG组）、氨基酸补饲组[SA组，补饲15 g/（d·头）过瘤胃赖氨酸+5 g/（d·头）过瘤胃蛋氨酸]、精料补饲组[SC组，补饲1.2 kg/（d·头）精料]和氨基酸+精料补饲组[SAC组，补饲15 g/（d·头）过瘤胃赖氨酸+5 g/（d·头）过瘤胃蛋氨酸+1.2 kg/（d·头）精料]。预试期9 d，正试期23 d。结果表明：1）补饲氨基酸、精料及两者交互作用对泌乳牦牛的总产奶量和平均日产奶量无显著影响（P>0.10）。与NG组相比，补饲精料显著提高了泌乳牦牛的平均日增重（P<0.05），而补饲氨基酸对泌乳牦牛的平均日增重无显著影响（P>0.10）。与NG组相比，补饲氨基酸具有提高犊牛的平均日增重的趋势（P=0.098），补饲精料及氨基酸和精料交互作用显著提高了犊牛的平均日增重（P<0.05）。2）与NG组相比，补饲氨基酸具有增加泌乳牦牛血液平均红细胞蛋白量（P=0.089）和降低平均血小板体积（P=0.084）的趋势。补饲氨基酸、精料及两者交互作用对泌乳牦牛其余血液生理指标无显著影响（P>0.10）。3）补饲氨基酸、精料及两者交互作用对泌乳牦牛血清生化和抗氧化指标无显著影响（P>0.10）。由此可见，夏季补饲精料+氨基酸能够同时促进放牧条件下泌乳母牦牛和犊牛的平均日增重。

关键词： 泌乳牦牛; 犊牛; 补饲; 平均日增重; 血液指标

本文引用格式

曹旭亮 , 刘虎 , 杨果 , 何金峰 , 肖玲 , 龙瑞军 , 周建伟 . 夏季补饲对放牧条件下泌乳牦牛生产性能及血液生理、生化、抗氧化指标的影响[J]. 动物营养学报, 2021 , 33(4) : 2116 -2125 . DOI: 10.3969/j.issn.1006-267x.2021.04.031

Abstract

The objective of this study was to investigate the effects of summer supplementation on performance and parameters of physiological, biochemical and antioxidant in blood of lactating yaks under grazing condition. A 2×2 double factor design was adopted in this experiment, twenty-four healthy lactating yaks with similar body weight[(218.0±19.5) kg] were selected and divided into 4 groups (6 yaks in each group), which were nature grazing group (NG group), supplemented with amino acids group[SA group, supplemented with 15 g/(d·head) rumen-protected lysine+5 g/(d·head) rumen-protected methionine], supplemented with concentrate group[SC group, supplemented with 1.2 kg/(d·head) concentrate] and supplemented with amino acids+concentrate group[SAC group, supplemented with 15 g/(d·head) rumen-protected lysine+5 g/(d·head) rumen-protected methionine+1.2 kg/(d·head) concentrate]. The pre-experimental period lasted for 9 days, and the experimental period lasted for 23 days. The results showed as follows:1) supplemented with amino acids, concentrate and their interaction had no significant effects on the total milk production and average daily milk production of lactating yaks (P>0.10). Compared with NG group, supplemented with concentrate significantly increased the average daily gain of lactating yaks (P<0.05), but supplemented with amino acids had no significant effect on the average daily gain of lactating yaks (P<0.05). Compared with NG group, supplemented with amino acids had a tendency to increase the average daily gain of calves (P=0.098), and supplemented with concentrate and interaction between amino acids and concentrate significantly increased the average daily gain of calves (P<0.05). 2) Compared with NG group, supplemented with amino acids had tendencies to increase the mean corpuscular protein in blood (P=0.089) and to decreased the mean platelet volume (P=0.084) of lactating yaks. Supplemented with amino acids, concentrate and their interaction had no significant effects on other blood physiological parameters of lactating yaks (P>0.10). 3) Supplemented with amino acids, concentrate and their interaction had no significant effects on parameters of biochemical and antioxidant in serum of lactating yaks (P>0.10). In conclusion, summer supplementation of concentrate+amino acids can improve the average daily gain of lactating yaks and calves under grazing condition.

Key words： lactating yaks; calves; supplementation; average daily gain; blood parameters

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