Risk factors for post-weaning diarrhoea on piglet producing farms in Finland

被引：61
作者：
Laine T.M. [1 ]
Lyytikäinen T. [2 ]
Yliaho M. [3 ]
Anttila M. [4 ]
机构：
[1] Finnish Food Safety Authority Evira, Production Animal Health Unit, FI-00790 Helsinki
[2] Finnish Food Safety Authority Evira, Risk Assessment Unit, FI-00790 Helsinki
[3] Rural Advisory Centre of Southern Ostrobothnia, FI-60220 Seinäjoki
[4] Finnish Food Safety Authority Evira, Pathology Unit, FI-00790 Helsinki
来源：
Acta Veterinaria Scandinavica | / 50卷 / 1期
关键词：
Herd Size; Feeding Regimen; Feed Restriction; Mycoplasma Hyopneumoniae; Case Farm;
D O I：
10.1186/1751-0147-50-21
中图分类号：
学科分类号：
摘要：
Background. Post-weaning diarrhoea (PWD) is a significant gastrointestinal disease in pigs. It is considered a multifactorial disease associated with proliferation of enterotoxigenic Escherichia coli in the intestinal tract of affected pigs. The aim of this study was to analyse risk factors related to the occurrence of PWD on Finnish piglet producing farms. Methods. The data of a follow-up study of 73 conventional piglet producing farms was used in the case-control study. The selection of the 41 PWD case and 28 control farms was based on the use of antimicrobials for treating diarrhoea in weaned pigs and the answers related to the occurrence of diarrhoea after weaning in the questionnaire. Four intermediate farms were excluded from the statistical analysis. Altogether 39 factors related to herd characteristics, weaner pig management and pig health were studied. The median number of sows was 59.0 (IQR = 44.0; 74.5) and 52.5 (IQR = 36.8; 61.5) on the case and the control farms, respectively. The significances of the univariable associations between the explanatory variables and the outcome variable were tested, and in the multivariate analysis quasibinomial generalized linear models were applied. Results. An increased risk of PWD was associated with the regimen of twice a day feeding and feed restriction after weaning (P = 0.02; compared to feeding three or more meals a day or the use of ad libitum feeding) and with a higher number of sows on the farm (P = 0.02; risk increasing with increasing number of sows). Automatic temperature control was associated with a decreased risk of PWD (P = 0.03; compared to manual temperature control). Conclusion. Twice a day feeding of newly-weaned pigs should be avoided if the amount of feed given is restricted. Variation in ambient temperature should be minimized in housing of newly-weaned pigs and this can be achieved by using automatic temperature control. With increasing number of sows in the herds the risk of PWD increases and more attention should be paid to prevention of post-weaning diarrhoea. © 2008 Laine et al; licensee BioMed Central Ltd.
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