tailieunhanh - Báo cáo khoa học: " Aspects on Feed Related Prophylactic Measures Aiming to Prevent Post Weaning Diarrhoea in Pigs"

Tuyển tập các báo cáo nghiên cứu về bệnh thú y được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành thú y đề tài: Aspects on Feed Related Prophylactic Measures Aiming to Prevent Post Weaning Diarrhoea in Pigs. | Acta vet. scand. 2002 43 231-245. Aspects on Feed Related Prophylactic Measures Aiming to Prevent Post Weaning Diarrhoea in Pigs By L. Melin1 2 and P. Wallgren1 2 department of Ruminant and Porcine Diseases National Veterinary Institute Uppsala Sweden department of Large Animal Clinical sciences Swedish University of Agricultural Sciences Uppsala Sweden. Melin L Wallgren P Aspects on feed related prophylactic measures aiming to prevent post weaning diarrhoea in pigs. Acta vet. scand. 2002 43 231-245. - The ability of feed related measures to prevent or reduce post weaning diarrhoea PWD was examined in a split litter study including 30 pigs from 6 litters allotted into 5 groups. Four groups were exposed to 3 pathogenic strains of E. coli via the environment at weaning. Three of them were given zinc oxide lactose fibres or non-pathogenic strains of E. coli as probiotics. The challenged and the unchallenged control groups were given a standard creep feed. Diarrhoea was observed in all challenged groups but not among uninfected animals and the incidence of diarrhoea was lower in the group given non-pathogenic E. coli compared to all other challenged groups. The severity of PWD also differed between litters. When corrected for mortality due to PWD a decreased incidence of diarrhoea was also seen in the groups given zinc oxide or lactose fibres. The dominating serotype of E. coli within faecal samples varied from day to day also among diarrhoeic pigs indicating that diarrhoea was not induced by one single serotype alone. The diversity of the faecal coliform populations decreased in all piglets during the first week post weaning coinciding with an increased similarity between these populations among pigs in the challenged groups. This indicated an influence of the challenge strains which ceased during the second week. The group given lactose fibres was least affected with respect to these parameters. In conclusion feed related measures may alleviate symptoms of PWD. E. .