Prevalence of clinical signs of disease in Danish finisher pigs
作者： H. H. Petersen , E. O. Nielsen , A.-G. Hassing , A. K. Ersboll , J. P. Nielsen
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摘要: Between December 1999 and February 2001, two visits, eight weeks apart, were made to 90 herds of Danish finisher pigs. The prevalence clinical signs was recorded by three veterinary technicians from the Bacon Meat Council according a standardised procedure; they had been trained their observations monitored validated before during study. A total 154,347 pigs examined 22,136 recorded. Vices accounted for 43 per cent signs. highest mean observed ear necrosis (4.44 cent), followed respiratory (2.17 lameness (1.92 other skin diseases (1.73 tail bites (1.26 umbilical hernia (0.78 flank (0.52 diarrhoea (0.27 distress (0.12 atrophic rhinitis (0.10 recumbency (0.09 cent) central nervous disease (0.05 cent). higher in conventional than specific pathogen-free herds. among finishers weighing 51 75 kg up 50 kg, then 76 100 kg.
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