Faye B, Dorr N, Lescourret F, Barnouin J, Chassagne M
INRA-Theix, Laboratoire d'Ecopathologie, Saint-Genès-Champanelle, France.
Vet Res. 1994;25(2-3):213-8.
A total of 4,129 dairy cows from 47 dairy farms were submitted each year after calving to a milk sampling for bacteriological examination. Six criteria defined the udder infection complex: frequency of minor, major and rare pathogens; rate of clinical and subclinical mastitis; and index of gravity of mastitis. Forty-seven variables described practices and their associations with the type of farms (defined by the above 6 criteria) were studied. The associated variables were dipping practices, covering of the milking parlour, disinfection practices, housing cleanliness and milk production.
每年有来自47个奶牛场的总计4129头奶牛在产犊后接受采奶进行细菌学检查。六项标准定义了乳房感染复合体：轻度、重度和罕见病原体的出现频率；临床和亚临床乳腺炎的发生率；以及乳腺炎严重程度指数。研究了47个描述养殖操作及其与农场类型（由上述六项标准定义）之间关联的变量。相关变量包括药浴操作、挤奶厅覆盖情况、消毒操作、牛舍清洁度和产奶量。
