tailieunhanh - Báo cáo khoa học: " Cubicle Refusal and Rearing Accommodation as Possible Mastitis Risk Factors in Cubicle-Housed Dairy Heifers"

Tuyển tập các báo cáo nghiên cứu về bệnh thú y được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành thú y đề tài: Cubicle Refusal and Rearing Accommodation as Possible Mastitis Risk Factors in Cubicle-Housed Dairy Heifers. | Acta vet. scand. 2001 42 123-130. Cubicle Refusal and Rearing Accommodation as Possible Mastitis Risk Factors in Cubicle-Housed Dairy Heifers By H. P Kjastad and E. Simensen The Norwegian School of Veterinary Science Department of Large Animal Clinical Sciences Oslo Norway. Kjffistad HP Simensen E Cubicle refusal and rearing accommodation as possible mastitis risk factors in cubicle-housed dairy heifers. Acta vet. scand. 2001 42 123130. - Fifty-nine of the 65 dairy farms with cubicle sheds in the Norwegian county of Oppland in 1990 were included in a study of rearing accommodation cubicle refusal and mastitis incidence. The farmers recorded the favoured resting location of the individual cows and heifers throughout the final week of pregnancy as well as during calving. The observations were matched with individual records of mastitis cases during the first 30 days after calving. Mastitis incidence in the heifers was analysed by logistic regression using rearing accommodation and cubicle refusal as independent variables controlling for herd as a clustering factor. Cubicle refusal was found in 29 of the heifers but in only 3 of older cows. The results of the analysis indicated a tendency for cubicle refusal to be associated with an increased mastitis incidence among the heifers OR OR P . Cubicle refusal accounted for 21 0-32 of the mastitis cases in the study population PAF . dairy cows cubicle housing cubicle refusal mastitis. Introduction Cubicle housing systems for dairy cows have a number of advantages over a tie barn such as better reproduction and health among the cows Ekesbo 1966 Bakken et al. 1988 0sterẵs 1990 Valde et al. 1997 good opportunities for them to exhibit different types of behaviour and improved working conditions for the herdsman. Increasing attention to these factors has contributed to the building of many cubicle houses also in countries with small dairy farms such as Norway. In a study of 186 out of 273 dairy farms

TÀI LIỆU LIÊN QUAN
TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.