tailieunhanh - Báo cáo khoa học: " Managerial and environmental determinants of clinical mastitis in Danish dairy herd"

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú y đề tài: Managerial and environmental determinants of clinical mastitis in Danish dairy herds. | Acta Veterinaria Scandinavica BioMed Central Research Open Access Managerial and environmental determinants of clinical mastitis in Danish dairy herds Kenji Sato1 Paul C Bartlett 2 Lis Alban3 Jens F Agger4 and Hans Houe4 Address Department of Veterinary Sciences College of Agriculture University of Wyoming Laramie WY USA 2Department of Large Animal Clinical Science Michigan State University East Lansing MI USA 3The Danish Meat Association Vinkelvej 11 DK-8620 Kjellerup Denmark and 4Department of Large Animal Sciences Group of Population Biology Section for Veterinary Epidemiology Faculty of Life Sciences University of Copenhagen Gronnegardsvej 8 DK-1870 Frederiksberg C Denmark Email Paul C Bartlett - bartlett@ Lis Alban - lia@ Jens F Agger - jfa@ Hans Houe - houe@ Corresponding author Published 7 February 2008 Received 3 January 2008 Acta Veterinaria Scandinavian 2008 50 4 doi 1751-0147-50-4 Accepted 7 February 2008 This article is available from http content 50 1 4 2008 Sato et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Several management and environmental factors are known as contributory causes of clinical mastitis in dairy herd. The study objectives were to describe the structure of herdspecific mastitis management and environmental factors and to assess the relevance of these herdspecific indicators to mastitis incidence rate. Methods Disease reports from the Danish Cattle Data Base and a management questionnaire from 2 146 herds in three Danish regions were analyzed to identify and characterize risk factors of clinical mastitis. A total of 94 18 continuous and 76 discrete management and production variables were .