Monitoring the Milk Composition, Milk Microbiota, and Blood Metabolites of Jersey Cows throughout a Lactation Period.
Monitoring the Milk Composition, Milk Microbiota, and Blood Metabolites of Jersey Cows throughout a Lactation Period.
复制标题
DOI：
10.3390/vetsci10030226
复制
发表时间：
2023-03-16
影响因子：
2.4
通讯作者：
Nishino N
中科院分区：
文献类型：
--
作者：
Gathinji PK;Yousofi Z;Akada K;Wali A;Nishino N
向可持续生产优质牛奶的转变导致泽西奶牛的繁殖增加。这项研究检查了泽西奶牛整个泌乳期的牛奶成分、牛奶微生物群和血液代谢产物，产生了超过25 kg/d的峰值产奶量。在哺乳期间，牛奶微生物群的流行家族间歇性地发生变化。牛奶中环境微生物群的污染与血浆非酯化脂肪酸、触珠蛋白和天冬氨酸转氨酶水平升高相结合。因此，在泌乳早期代谢功能受损可能会增加机会性细菌的入侵。本研究旨在确定泽西奶牛泌乳期间牛奶成分、牛奶微生物群和血液代谢物的变化。从泌乳期开始到结束，每隔一个月从8头健康奶牛中采集牛奶和颈静脉血样。还收集了空气中的灰尘样本，以确定牛棚微生物群是否会影响牛奶微生物群。产奶量在头两个月达到峰值，并随着泌乳期的进展而逐渐下降。乳脂、蛋白质和非脂固形物含量在泌乳期第一个月较低，然后在泌乳中期和后期有所增加。在第一个月，血浆非酯化脂肪酸（NEFA），结合珠蛋白（Hp），天冬氨酸转氨酶（AST）水平升高，并观察到高丰度的伯克霍尔德菌科和草酸杆菌科的牛奶和空气中的灰尘微生物群。牛奶中环境微生物群的污染与血浆NEFA、Hp和AST水平升高相结合的发现表明，泌乳早期代谢功能受损可能会增加机会性细菌的入侵。这项研究可以肯定的重要性，饲养和牛棚管理，并应提供一个有益的补充，以改善泽西奶牛养殖。
The shift to the sustainable production of quality milk has led to the increased breeding of Jersey cows. This study examined the milk composition, milk microbiota, and blood metabolites throughout the lactation period of Jersey cows, producing a peak milk yield of more than 25 kg/d. The prevalent families of the milk microbiota changed intermittently during the lactation period. Contamination of the environmental microbiota in milk was coupled with elevated plasma non-esterified fatty acids, haptoglobin, and aspartate transaminase levels. Thus, impaired metabolic function during the early lactation period may increase the invasion of opportunistic bacteria. This study aimed to determine how milk composition, milk microbiota, and blood metabolites may change during the lactation period in Jersey cows. Milk and jugular blood samples were collected from eight healthy cows every other month from the beginning to the end of their lactation period. Samples of airborne dust were also collected to determine whether the cowshed microbiota could affect milk microbiota. Milk yield peaked in the first two months and gradually decreased as the lactation period progressed. Milk fat, protein, and solids-not-fat contents were low in the first month, and then increased during the middle and late lactation periods. In the first month, plasma non-esterified fatty acids (NEFA), haptoglobin (Hp), and aspartate transaminase (AST) levels were elevated, and high abundances of Burkholderiaceae and Oxalobacteraceae were observed in milk and airborne dust microbiota. The finding that contamination of the environmental microbiota in milk was coupled with elevated plasma NEFA, Hp, and AST levels indicated that impaired metabolic function during the early lactation period may increase the invasion of opportunistic bacteria. This study can affirm the importance of feeding and cowshed management and should provide a helpful addition to improving Jersey cow farming.
登录
查看更多内容
影响因子：
3.2
作者：
Metzger SA;Hernandez LL;Skarlupka JH;Walker TM;Suen G;Ruegg PL
通讯作者：
Ruegg PL
影响因子：
6.4
作者：
Kable ME;Srisengfa Y;Laird M;Zaragoza J;McLeod J;Heidenreich J;Marco ML
通讯作者：
Marco ML
产后子宫炎奶牛血常规、生化指标及外周血促炎细胞因子表达的变化
影响因子：
2.6
作者：
Cui, Luying;Wang, Heng;Li, Jianji
通讯作者：
Li, Jianji
影响因子：
3.5
作者：
Rajala-Schultz, PJ;Saville, WJA
通讯作者：
Saville, WJA
影响因子：
3
作者：
Yoo, Jayeon;Song, Minyu;Kim, Younghoon
通讯作者：
Kim, Younghoon