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大奶粉导电性,pH和布里克斯指数作为对小子被动免疫转移的预测指标

Humberto Borges Magalhaes¹, Igor Frederico Canisso¹

¹Department of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, Illinois, USA.

Equine veterinary journal

|October 17, 2024

概括

大奶粉导电性,pH值和布里克斯指数是对子成功转移被动免疫 (TPI) 的有效预测指标. 这些廉价的农场测试可以帮助确保小的健康和生存.

科学领域:

马类新生儿健康
兽医免疫学兽医免疫学
结母乳分析结母乳分析

背景情况:

幼免疫力严重依赖于免疫球蛋白从胆乳中吸收.
胆乳评估对于预测被动免疫 (TPI) 的成功转移至关重要.
预分娩前的乳头pH值和导电性的变化被假设是TPI所必需的,但需要进一步调查.

研究的目的:

为了评估胆乳导电性,pH和Brix指数对小的TPI的预测值.
建立可靠的农场评估方法来评估乳母质量.

主要方法:

一项涉及241只母马及其小马的实地研究.
使用手持式设备,分娩后立即对导电性,pH值和布里克斯指数进行了结母乳样本的分析.
在产后20小时测量子血IgG度,以确定TPI状态 (完整或不完整).
用多变量回归和ROC曲线分析来评估预测因素.

主要成果:

在89.4%的小中观察到完整的TPI.
ROC分析表明导电率 (≤5mS/cm),布里克斯指数 (≥23.4%) 和pH (≤6.4) 的预测值.
导电性,布里克斯指数和pH值显示出预测TPI的显著几率比率,灵敏度和特异性各不相同.

结论:

大奶粉导电性,pH值和布里克斯指数是对小成功的TPI的强有力的预测指标.
虽然确立了特定的切断值,但它们的特异性低至中等.
这项研究强调了便宜,易于使用的手持设备的实用性,用于在农场进行乳酪评估,以确保足够的被动免疫转移.

关键词:

布里克斯指数是一个指数.在IgG IgG的基础上.在TPI上,TPI就是TPI.大奶粉是什么? 大奶粉是什么? 大奶粉是什么?导电性的导电性.它们的pH值为pH.

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