Hald B, Rattenborg E, Madsen M
Danish Veterinary Laboratory, Aarhus, Denmark.
Lett Appl Microbiol. 2001 Apr;32(4):253-6. doi: 10.1046/j.1472-765x.2001.00896.x.
The effect of batch depletion of broiler houses for campylobacter occurrence in broiler flocks was estimated in 10 flocks, each comprising a separate female and male batch.
The chicks were sampled first by cloacal swabs in the broiler houses before the start of the depopulation and secondly, on arrival at the abattoir. Females were slaughtered at 5 weeks of age, males at 6 weeks. The number of campylobacter-positive batches increased from five to seven female batches, and from five to 10 male batches, between the two sampling rounds.
It is concluded that batch depletion of broiler houses increased the prevalence of Campylobacter spp.-infected broilers in the flocks, that the introduction occurred when catching the first batch, and that campylobacter spreads through the entire flock within a week.
The results from this study emphasize the need to manage depopulation of broiler houses as quickly as possible and in one batch only.
在10个鸡群中评估肉鸡舍分批清空对肉鸡群弯曲杆菌感染情况的影响，每个鸡群包含单独的一批母鸡和一批公鸡。
在清空鸡舍前，首先通过泄殖腔拭子对鸡舍内的雏鸡进行采样，其次，在雏鸡抵达屠宰场时进行采样。母鸡在5周龄时屠宰，公鸡在6周龄时屠宰。在两轮采样之间，弯曲杆菌阳性批次的数量从5批增加到7批母鸡批次，从5批增加到10批公鸡批次。
得出的结论是，肉鸡舍的分批清空增加了鸡群中感染弯曲杆菌属的肉鸡的患病率，感染在捕捉第一批鸡时发生，并且弯曲杆菌在一周内传播到整个鸡群。
本研究结果强调了尽快且仅以一批方式管理肉鸡舍清空的必要性。
