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首页> 外文期刊>Journal of dairy research >Risk factors for poor colostrum quality and failure of passive transfer in Scottish dairy calves
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Risk factors for poor colostrum quality and failure of passive transfer in Scottish dairy calves

机译：苏格兰乳制品小牛被动转移不良质量和被动转移失败的危险因素

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摘要

Failure of passive transfer (FPT) has health, welfare and economic implications for calves. Immunoglobulin G (IgG) concentration of 370 dairy calf serum samples from 38 Scottish dairy farms was measured via radial immunodiffusion (RID) to determine FPT prevalence. IgG concentration, total bacteria count (TBC) and total coliform count (TCC) of 252 colostrum samples were also measured. A questionnaire was completed at farm enrollment to investigate risk factors for FPT and poor colostrum quality at farm-level. Multivariable mixed effect logistic and linear regressions were carried out to determine significant risk factors for FPT and colostrum quality. Prevalence of FPT at calf level was determined to be 14.05%. Of 252 colostrum samples, 111 (44.05%) failed to meet Brix thresholds for colostrum quality. Of these 28 and 38 samples also exceeded TBC and TCC thresholds, respectively. Increased time between parturition and colostrum harvesting was numerically (non-signifi-cantly) associated with a colostrum Brix result ＜22%, and increased time spent in a bucket prior to feeding or storing was significantly associated with high TBC (≥100 000cfu/ml and also ≥10 000cfu/ml). High TBC values in colostrum were significantly associated with lower serum IgG concentrations. This study highlights associations between colostrum quality and FPT in dairy calves as well as potential risk factors for reduced colostrum quality; recommending some simple steps producers can take to maximise colostrum quality on farm.
机译：被动转移失败（FPT）对小牛有健康，福利和经济影响。通过径向免疫分解（RIV）测量来自38个苏格兰乳制品农场的370只乳制品小牛血清样品的免疫球蛋白G（IgG）浓度，以确定FPT患病率。还测量IgG浓度，总细菌数（TBC）和总大肠杆菌计数（TCC）的252种初乳样品。在农场入学时完成了调查问卷，以调查FPT的风险因素和农业水平较差的初乳质量。进行多变量混合效果逻辑和线性回归，以确定FPT和初乳质量的显着风险因素。 CALF水平的FPT患病率确定为14.05％。在252个初乳样品中，111（44.05％）未能满足初乳质量的Brix阈值。在这些28和38个样品中也分别超过TBC和TCC阈值。分娩和初乳收获之间的时间数值（非显着性）与初乳Brix结果相关<22％，并且在进料或储存之前在桶中花费的增加的时间与高TBC显着相关（≥100000cfu / ml还≥10000cfu / ml）。初乳中的高TBC值与血清IgG浓度显着相关。本研究突出了乳制品犊牛初乳质量和FPT之间的关联，以及降低初乳质量的潜在危险因素;推荐一些简单的步骤生产商可以采取以最大化农场的初乳质量。

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  • 来源
    《Journal of dairy research》 |2021年第3期|337-342|共6页
  • 作者

    Alexandra Haggerty; Colin Mason; Kathryn Ellis; Katharine Denholm;

  • 作者单位

    Scottish Centre for Production Animal Health and Food Safety University of Glasgow School of Veterinary Medicine Glasgow G61 1QH UK;

    Scotland's Rural College Dumfries DG1 1DX UK;

    Scottish Centre for Production Animal Health and Food Safety University of Glasgow School of Veterinary Medicine Glasgow G61 1QH UK;

    Scottish Centre for Production Animal Health and Food Safety University of Glasgow School of Veterinary Medicine Glasgow G61 1QH UK;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Colostrum; dairy calves; FPT; risk factors;

    机译：初乳;乳制品小牛;FPT;风险因素;

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