Survey of the incidence and aetiology of mastitis on dairy farms in England and Wales

被引:309
作者
Bradley, A. J. [1 ]
Leach, K. A.
Breen, J. E.
Green, L. E.
Green, M. J.
机构
[1] Univ Bristol, Sch Clin Vet Sci, Bristol BS40 5DU, Avon, England
[2] Univ Warwick, Dept Biol Sci, Ecol & Epidemiol Grp, Coventry CV4 7AL, W Midlands, England
[3] Univ Nottingham, Sch Vet Med & Sci, Loughborough LE12 5RD, Leics, England
[4] Univ Nottingham, Sch Math Sci, Loughborough LE12 5RD, Leics, England
[5] Qual Milk Management Serv, Unit 1, Wells BA5 1EY, England
关键词
D O I
10.1136/vr.160.8.253
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
A survey of clinical and subclinical mastitis was carried out on 97 dairy farms in England and Wales, selected at random from members of a national milk recording scheme. The farmers were asked to collect aseptic milk samples from five consecutive cases of clinical mastitis and from five quarters with high somatic cell counts using a defined protocol, and they completed a questionnaire that included information on the cows sampled, the herd and the history of mastitis in the herd. The samples were collected throughout the year. The mean incidence of clinical mastitis was 47 cases per 100 cows per year (estimated from historic farm records) and 71 cases per 100 cows per year (estimated from the samples collected). Streptococcus uberis and Escherichia coli were isolated in pure culture from 23(.)5 per cent and 19(.)8 per cent, respectively, of the clinical samples; 26(.)5 per cent of the clinical samples produced no growth. The most common isolates from the samples with high cell counts were coagulase-negative staphylococci (15 per cent), S uberis (14 per cent) and Corynebacterium species (10 per cent). Staphylococcus aureus and coagulase-positive staphylococci together accounted for 10 per cent of the samples with high somatic cell counts; 39 per cent produced no bacterial growth.
引用
收藏
页码:253 / 258
页数:10
相关论文
共 15 条
[1]  
Berry E.J., Mastitis incidence in straw yards and cubicles, Veterinary Record, 142, pp. 517-518, (1998)
[2]  
Booth J.M., Progress in Mastitis Control - An Evolving Problem, Proceedings of the British Mastitis Conference, pp. 3-9, (1997)
[3]  
Bradley A.J., Bovine mastitis: An evolving disease, Veterinary Journal, 164, pp. 116-128, (2002)
[4]  
Bradley A.J., Green M.J., Aetiology of clinical mastitis in six Somerset dairy herds, Veterinary Record, 148, pp. 683-686, (2001)
[5]  
Kingwill R.G., Neave E.K., Dodd F.H., Griffin T.K., Westgarth D.R., Wilson C.D., The effect of a mastitis control system on levels of sub-clinical and clinical mastitis in two years, Veterinary Record, 87, pp. 94-100, (1970)
[6]  
Kossaibati M.A., Hovi M., Esslemont R.J., Incidence of clinical mastitis in dairy herds in England, Veterinary Record, 143, pp. 649-653, (1998)
[7]  
Milne M.H., Barrett D.C., Fitzpatrick J.L., Biggs A.M., Prevalence and aetiology of clinical mastitis on dairy farms in Devon, Veterinary Record, 151, pp. 241-243, (2002)
[8]  
Laboratory Handbook on Bovine Mastitis, (1999)
[9]  
(2006)
[10]  
Peeler E.J., Green M.J., Fitzpatrick J.L., Green L.E., Study of clinical mastitis in British dairy herds with bulk milk somatic cell counts less than 150,000 cells/ml, Veterinary Record, 151, pp. 170-176, (2002)