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推迟第一次乳母乳采集:对山羊乳母乳中免疫球蛋白G的影响

F Zamuner¹, A W N Cameron², E K Carpenter²

¹School of Agriculture, Food and Ecosystem Sciences, Faculty of Science - The University of Melbourne, Parkville, Victoria 3010, Australia.

Animal : an international journal of animal bioscience

|August 14, 2024

概括

在产后14小时内延迟采集山羊乳房不会显著影响免疫球蛋白G (IgG) 或布里克斯值. 布里克斯折射计是一种可靠的农场工具,用于评估山羊胆乳质量.

科学领域:

动物科学动物科学
乳制品生产乳制品生产
兽医医学兽医医学兽医医学

背景情况:

乳母质量对于新生的山羊免疫力至关重要,免疫球蛋白G (IgG) 是一个关键指标.
有限的研究存在于延迟胆乳收集对山羊IgG度的影响.
了解乳酪成分和最佳采集时间对于奶牛养殖效率至关重要.

研究的目的:

为了研究延迟首次胆汁采集对Saanen山羊的IgG,总蛋白质 (TP) 和Brix值的影响.
评估Brix,TP和IgG度之间的相关性和一致性.
为了确定最佳的布里克斯和TP值来预测良好的山羊胆乳.

主要方法:

从56只Saanen山羊分娩后0,4-6小时,8-10小时或12-14小时收集了母乳样本.
使用ELISA测量免疫球蛋白G (IgG),使用数字折射计测量Brix,使用布拉德福德方法测量总蛋白质 (TP).
统计分析包括斯皮尔曼的相关性,林的一致性相关系数和ROC分析.

主要成果:

采集时间 (产后14小时) 对IgG,Brix或TP度没有显著影响.
在布里克斯和IgG值之间发现了强烈的正相关性 (r=0.89-0.90) 和一致性 (ρc=0.89-0.90).
预测IgG≥20,30,40和50g/L的最佳布里克斯值分别为13.8%,17.5%,20.1%和22.5%.

结论:

在山羊中延迟首次胆乳收集至产后14小时不会显著改变IgG,Brix或TP水平.
布里克斯折射计是一种可靠且准确的农场方法,用于估计山羊胆乳中的IgG度.
这些发现支持在密集乳制品系统中优化乳酪管理策略,特别是在玩笑期间.

关键词:

乳母乳质量乳母乳质量截止值是指截止值是指截止值.数字手持式反光计数字手持反光计第一次奶的时间.总蛋白质总量总蛋白质总量

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