奶牛干燥期和围产期开始时抗菌成分浓度的变化

IF 1.2 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Jirapat Jaisue, Jinkun Sun, Nur Laili Marufah, Masashi Itagaki, Naoki Isobe
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引用次数: 0

摘要

我们旨在阐明奶牛干期抗菌成分(AMC)的动态,并确定干期开始时不同的体细胞计数(SCC)对随后牛奶中抗菌成分浓度变化的影响。将荷斯坦奶牛的乳样品分为低scc组和高scc组。在四个时间点测量牛奶中的AMC浓度:(1)干期开始,(2)产犊前,(3)产犊后立即,(4)产后1周。在低SCC组,SCC和舌抗菌肽在孕前升高,但在产后1周下降。乳过氧化物酶和乳铁蛋白浓度在产犊前升高,但在产犊后下降,而抗菌肽-7、S100A7和S100A8浓度在产犊后升高。低scc组的S100A7浓度显著高于高scc组在产犊前和产犊后的浓度。然而,低scc组的S100A8浓度在孕前和产后1周显著低于高scc组。这些结果表明,一些AMCs在干燥期开始后和产犊后立即升高,并强调了在干燥期开始前减轻乳腺炎症的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Changes in Antimicrobial Component Concentrations at the Onset of the Dry Period and Peripartum in Dairy Cows

Changes in Antimicrobial Component Concentrations at the Onset of the Dry Period and Peripartum in Dairy Cows

We aimed to clarify antimicrobial component (AMC) dynamics during the dry period in dairy cows and determine the impacts of varying somatic cell count (SCC) at the onset of the dry period on the subsequent changes in AMC concentrations in milk. Milk samples obtained from Holstein dairy cows were categorized into low-SCC and high-SCC groups. AMC concentrations in milk were measured at four time points: (1) Onset of the dry period, (2) before calving, (3) immediately after calving, and (4) 1 week postpartum. In the low-SCC group, SCC and lingual antimicrobial peptide increased prepartum but decreased 1 week postpartum. Milk lactoperoxidase and lactoferrin concentrations increased prepartum but declined after calving, while cathelicidin-7, S100A7, and S100A8 concentrations increased after calving compared to those prepartum in both groups. S100A7 concentrations in the low-SCC group were significantly higher than those in the high-SCC group prepartum and immediately after calving. However, S100A8 concentrations in the low-SCC group were significantly lower than those in the high-SCC group prepartum and 1 week postpartum. These results suggest that some AMCs were elevated after the onset of the dry period and immediately after calving and highlight the importance of mitigating inflammation in the mammary glands before the onset of the dry period.

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来源期刊
Animal Science Journal
Animal Science Journal 生物-奶制品与动物科学
CiteScore
3.80
自引率
5.00%
发文量
111
审稿时长
1 months
期刊介绍: Animal Science Journal (a continuation of Animal Science and Technology) is the official journal of the Japanese Society of Animal Science (JSAS) and publishes Original Research Articles (full papers and rapid communications) in English in all fields of animal and poultry science: genetics and breeding, genetic engineering, reproduction, embryo manipulation, nutrition, feeds and feeding, physiology, anatomy, environment and behavior, animal products (milk, meat, eggs and their by-products) and their processing, and livestock economics. Animal Science Journal will invite Review Articles in consultations with Editors. Submission to the Journal is open to those who are interested in animal science.
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