Microbiota of individual cow milk, bulk tank milk, and feces of Jersey cows were examined. Samples were collected from two farms (F1 and F2) in cool (November, Nov) and hot (July, Jul) seasons. Milk yield and milk composition were similar between the two farms and between the two seasons. Prevalent taxa of the fecal microbiota, i.e. Ruminococcaceae, Bacteroidaceae, Lachnospiraceae, Rikenellaceae, and Clostridiaceae, were unaffected by the farm and season. Relative abundance of milk microbiota for Pseudomonadaceae, Enterobacteriaceae, and Streptococcaceae (F1 > F2) and Lactobacillaceae, Bifidobacteriaceae, and Cellulomonadaceae (F1 < F2) were different between the two farms, and those for Staphylococcaceae, Bacillaceae, Ruminococcaceae, and Veillonellaceae (Nov < Jul) and Methylobacteriaceae and Moraxellaceae (Nov > Jul) were different between the two seasons. The microbiota of bulk tank milk was numerically different from that of individual cow milk. Principal coordinate analysis indicated that the milk microbiota was unrelated to the fecal microbiota. The finding that relative abundance of Pseudomonadaceae and Moraxellaceae appeared greater than those reported for Holstein milk suggested that higher protein and fat content may result in a greater abundance of proteolytic and lipolytic taxa in Jersey cow milk.

中文翻译：

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冷热季节泽西奶牛牛奶微生物群、粪便微生物群和血液代谢物的检测。

检查了个别牛奶、散装罐牛奶和泽西奶牛粪便的微生物群。在凉爽（11 月、11 月）和炎热（7 月、7 月）季节从两个农场（F1 和 F2）采集样品。两个农场之间以及两个季节之间的牛奶产量和牛奶成分相似。粪便微生物群的主要分类群，即瘤胃球菌科、拟杆菌科、毛螺菌科、理菌科和梭菌科，不受农场和季节的影响。假单胞菌科、肠杆菌科、链球菌科(F1 > F2) 和乳杆菌科的牛奶微生物群的相对丰度，双歧杆菌科和纤维单胞菌科（F1 < F2）在两季之间存在差异，葡萄球菌科、芽孢杆菌科、瘤胃球菌科和韦荣球菌科（11月<7月）和甲基杆菌科和莫拉菌科（11月>7月）在两个季节之间存在差异。散装罐牛奶的微生物群在数值上与单个牛奶的微生物群不同。主坐标分析表明，牛奶微生物群与粪便微生物群无关。发现假单胞菌科和莫拉氏菌科的相对丰度看起来比荷斯坦牛奶报道的更大，这表明更高的蛋白质和脂肪含量可能导致泽西牛奶中更多的蛋白水解和脂解类群。