Incidence Rate of Clinical Mastitis on Canadian Dairy Farms
作者： R.G.M. Olde Riekerink , H.W. Barkema , D.F. Kelton , D.T. Scholl
关键词:
摘要: No nationwide studies of the incidence rate clinical mastitis (IRCM) have been conducted in Canada. Because IRCM and distribution mastitis-causing bacteria may show substantial geographic variation, primary objective this study was to determine regional pathogen-specific on Canadian dairy farms. Additionally, association with bulk milk somatic cell count (BMSCC) barn type were determined. In total, 106 farms 10 provinces Canada participated for a period 1 yr. Participating producers recorded 3,149 cases mastitis. The most frequently isolated pathogens Staphylococcus aureus, Escherichia coli, Streptococcus uberis, coagulase-negative staphylococci. Overall mean median 23.0 16.7 per 100 cow-years selected herds, respectively, range from 0.7 97.4 herd. between BMSCC overall found, but E. coli culture-negative highest Staph. aureus lowest low medium herds. Strep. dysgalactiae Western provinces. Quebec. Cows tie-stalls had higher incidences staphylococci, other streptococcal compared those free-stalls, whereas cows free stalls Klebsiella spp. than tie-stall barns. focus prevention control programs should differ regions be tailored based housing BMSCC.
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sci-hub.se 参考文章(39)
J. C. M. Dekkers, R. T. E. Van Dorp, M. M. Shoukri, S. W. Martin, J. P. T. M. Noordhuizen, An epidemiologic study of disease in 32 registered Holstein dairy herds in British Columbia. Canadian Journal of Veterinary Research-revue Canadienne De Recherche Veterinaire. ,vol. 63, pp. 185- 192 ,(1999)
K E Leslie, J M Sargeant, A Bashiri, M J Ireland, H M Scott, Clinical mastitis in dairy cattle in Ontario: frequency of occurrence and bacteriological isolates. Canadian Veterinary Journal-revue Veterinaire Canadienne. ,vol. 39, pp. 33- 38 ,(1998)
Kerry D Lissemore, Ken E Leslie, Todd F Duffield, David F Kelton, Bill Grexton, Chris J McLaren, The relationship between herd level disease incidence and a return over feed index in Ontario dairy herds. Canadian Veterinary Journal-revue Veterinaire Canadienne. ,vol. 47, pp. 767- 773 ,(2006)
J B Britney, S W Martin, J B Stone, I McMillan, A H Meek, D G Grieve, The relationship among current management systems, production, disease and drug usage on Ontario dairy farms. Canadian Journal of Veterinary Research-revue Canadienne De Recherche Veterinaire. ,vol. 50, pp. 7- 14 ,(1986)
Ian R. Dohoo, S. Wayne Martin, Disease, production and culling in Holstein-Friesian cows Preventive Veterinary Medicine. ,vol. 2, pp. 755- 770 ,(1984) , 10.1016/0167-5877(84)90031-X
L H Brown, E M Peterson, L M de la Maza, Rapid identification of enterococci. Journal of Clinical Microbiology. ,vol. 17, pp. 369- 370 ,(1983) , 10.1128/JCM.17.2.369-370.1983
Henrik Stryhn, S. Wayne Martin, Ian Robert Dohoo, Veterinary Epidemiologic Research ,(2009)
Y.H. Schukken, J.A.H. Smit, F.J. Grommers, D. Vandegeer, A. Brand, Effect of freezing on bacteriologic culturing of mastitis milk samples. Journal of Dairy Science. ,vol. 72, pp. 1900- 1906 ,(1989) , 10.3168/JDS.S0022-0302(89)79309-7
Ian R. Dohoo, S. Wayne Martin, Alan H. Meek, W.C.D. Sandals, Disease, production and culling in Holstein-Friesian cows I. The data Preventive Veterinary Medicine. ,vol. 1, pp. 321- 334 ,(1983) , 10.1016/0167-5877(83)90003-X
S. McDougall, Efficacy of two antibiotic treatments in curing clinical and subclinical mastitis in lactating dairy cows New Zealand Veterinary Journal. ,vol. 46, pp. 226- 232 ,(1998) , 10.1080/00480169.1998.36094