tailieunhanh - Báo cáo khoa học: " Reduced use of antimicrobials after vaccination of pigs against porcine proliferative enteropathy in a Danish SPF herd"

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú y đề tài: Reduced use of antimicrobials after vaccination of pigs against porcine proliferative enteropathy in a Danish SPF herd. | Acta Veterinaria Scandinavica BioMed Central Brief communication Reduced use of antimicrobials after vaccination of pigs against porcine proliferative enteropathy in a Danish SPF herd Hanne Bak and Poul Henning Rathkjen Address Boehringer-Ingelheim Vetmedica Strodamvej 52 DK-2100 Copenhagen 0 Denmark Email Hanne Bak - hba@ Poul Henning Rathkjen - pra@ Corresponding author Open Access Published 7 January 2009 Received 18 August 2008 J J. 1 I mz 1-rr I 1 z-r r I I Accepted 7 January 2009 Acta Veterinaria Scandinavica 2009 51 1 doi l75l-0l47-5l-l This article is available from http content 5l l l 2009 Bak and Rathkjen licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract The present study explored whether the use of group medication with antibiotics in a Danish pig herd was reduced after vaccination of the pigs against proliferative enteropathy PE caused by Lawsonia intracellularis. 7900 pigs originating from a single commercial sow herd were vaccinated against L. intracellularis whereas 7756 pigs were kept as non-vaccinated controls. The pigs were included batch-wise in the study with every second batch being vaccinated. In the vaccinated batches the consumption of oxytetracykline to treat PE was reduced by 79 with a significantly lower number of pigs being treated P . Vaccination also resulted in a highly significant improvement of average daily weight gain 46 g day P X l0-3i and carcase weight kg P X l0-O5 as well as a shortened fattening period -8 days P X l0-45 . Findings In pig producing countries Lawsonia intracellularis is a common intestinal infection with severe economic consequences due to decreased .