中国畜牧兽医 ›› 2022, Vol. 49 ›› Issue (9): 3353-3361.doi: 10.16431/j.cnki.1671-7236.2022.09.009

• 生理生化 • 上一篇    下一篇

安格斯母牛初乳产量与质量测定及其新生犊牛被动免疫效果评价

杨朝辉1, 马雪连1, 王凡1, 易鹏飞1, 吴静1, 冯梦迪1, 陈玉珠1, 孙亚伟1, 吾买尔江·牙合甫1, 王胜2, 许建标2, 钟旗3, 周振勇4, 姚刚1   

  1. 1. 新疆农业大学动物医学学院, 乌鲁木齐 830052;
    2. 新疆刀郎阳光农牧科技股份有限公司, 麦盖提 844600;
    3. 新疆畜牧科学院兽医研究所, 乌鲁木齐 830000;
    4. 新疆畜牧科学院畜牧研究所, 乌鲁木齐 830011
  • 收稿日期:2022-02-28 出版日期:2022-09-05 发布日期:2022-08-24
  • 通讯作者: 周振勇 E-mail:13699381790@163.com
  • 作者简介:杨朝辉,E-mail:1186265895@qq.com。
  • 基金资助:
    新疆自治区乡村振兴产业发展科技行动项目(2020NC001);肉牛高效健康饲养技术集成研究与示范(2021A02003-1)

Determination of Colostrum Yield and Quality of Angus Cows and Evaluation of Passive Immunity Effect of Newborn Calves

YANG Chaohui1, MA Xuelian1, WANG Fan1, YI Pengfei1, WU Jing1, FENG Mengdi1, CHEN Yuzhu1, SUN Yawei1, WUMAIERJIANG·Yahefu1, WANG Sheng2, XU Jianbiao2, ZHONG Qi3, ZHOU Zhenyong4, YAO Gang1   

  1. 1. College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China;
    2. Xinjiang Daolang Sunshine Agriculture and Animal Husbandry Technology Co., Ltd., Maigaiti 844600, China;
    3. Institute of Veterinary Medicine, Xinjiang Academy of Animal Science, Urumqi 830000, China;
    4. Institute of Animal Science, Xinjiang Academy of Animal Sciences, Urumqi 830011, China
  • Received:2022-02-28 Online:2022-09-05 Published:2022-08-24

摘要: 【目的】 新生犊牛被动免疫转移失败(failure of passive transfer,FPT)会导致犊牛发病率和死亡率显著增高,影响后期生长发育。本试验针对国外引进的安格斯母牛初乳产量和质量进行测定,并对其新生犊牛被动免疫效果进行评估,以期为新生犊牛初乳管理措施制定提供科学依据。【方法】 随机选择健康安格斯初产母牛(24月龄)和经产母牛(36~48月龄)各15头,待母牛产犊后立即进行人工挤奶测定初乳产量、营养成分及免疫球蛋白浓度。选取初产和经产新生犊牛各15头,测定其初生重,分别采集犊牛出生后未食初乳(0 h)和食初乳后(24~36 h)血样,测定其血清总蛋白含量及各生理生化指标。【结果】 初产母牛平均初乳产量极显著低于经产母牛,但其初乳中乳蛋白、非脂乳固体、乳糖、灰分含量,以及密度和电导率均极显著高于经产母牛(P<0.01)。初产母牛和经产母牛初乳中免疫球蛋白浓度分别为28.72%和26.24%,合格率分别为93.33%和91.67%,差异均不显著(P>0.05);初产和经产新生犊牛被动免疫失败率分别为33.3%和25.0%;初产新生犊牛平均初生重极显著低于经产新生犊牛(P<0.01);被动免疫成功犊牛平均初生重和球蛋白含量均极显著高于被动免疫失败犊牛(P<0.01)。【结论】 新疆安格斯犊牛FPT的主要原因可能是母牛初乳产量低导致新生犊牛初乳摄入不足,初生重较低的犊牛FPT的风险性较高。本研究为制定切实可行的新生安格斯犊牛初乳补饲计划提供了科学基础。

关键词: 安格斯母牛; 新生犊牛; 初乳; 被动免疫转移失败(FPT)

Abstract: 【Objective】 The failure of passive transfer (FPT) of newborn calves will lead to significant increase in incidence rate and mortality rate of calves, and affect later growth and development.This study was aimed to measure the production and quality of colostrum of Angus cows imported from abroad, and evaluate the passive immunity effect of newborn calves, in order to provide a scientific basis for the formulation of colostrum management measures for newborn calves.【Method】 15 healthy Angus primiparous cows (24 months of age) and 15 Angus multiparous cows (36 to 48 months of age) were randomly selected, which were milked immediately after calving to determine the colostrum yield, nutritional component and immunoglobulin concentration.15 Angus primiparous and multiparous newborn calves were selected, respectively, the birth weight were measured, the blood samples were collected after birth without colostrum (0 h) and after colostrum (24 to 36 h) to determine the content of serum total protein and physiological and biochemical indicators.【Result】 The average colostrum yield of primiparous cows was extremely significantly lower than that of multiparous cows, but the contents of milk protein, non-fat milk solids, lactose, ash, and density and electrical conductivity of colostrum in primiparous cows were extremely significantly higher than that in multiparous cows (P<0.01).The immunoglobulin concentration of colostrum in primiparous and multiparous cows were 28.72% and 26.24%, the pass rate were 93.33% and 91.67%, respectively, there were no significant difference (P>0.05).The passive immunization failure rate of of primiparous and multiparous newborn calves were 33.3% and 25.0%, respectively.The average body weight of primiparous newborn calves was extremely significantly lower than that of multiparous newborn calves (P<0.01).The average birth weight and globulin content of passive immunity success calves were extremely significantly higher than that of passive immunity failure calves (P<0.01).【Conclusion】 The main cause of FPT in Xinjiang Angus calves might be closely related to the insufficient colostrum intake of newborn calves due to low colostrum production of cows.Calves with lower birth weight were at higher risk for FPT.This study provided a scientific basis for formulating a feasible colostrum supplementary feeding plan for newborn Angus calves.

Key words: Angus cows; newborn calves; colostrum; failure of passive transfer (FPT)

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