Impact of the Australian litter re-use practice on Salmonella in the broiler farming environment
- 作者：H.N. Chinivasagam ; nalini.chinivasagam@deedi.qld.gov.au ; T. Tran ; P.J. Blackall
- 关键词：Salmonella ; Survival ; Bedding ; Litter ; Poultry ; Broiler
- 刊名：Food Research International
- 出版年：2012
- 期刊代码：53_09639969
- 类别：abs
- 出版时间：March, 2012
- 卷：45
- 期：2
- 页码：891-896
- 文件大小：370 K
摘要
This study has examined the dynamics (in terms of levels and serovar diversity) of Salmonella in the 鈥渄ual litter environment鈥?that occurs within a single shed as a result of a management practice common in Australia. The study also looked at the physical parameters of the litter (pH, moisture content, water activity and litter temperature) as a means of understanding the Salmonella dynamics in these litter environments. The Australian practice results in the brooder end of the shed having new litter each cycle while the grow-out end has re-used litter (a 鈥渄ual litter environment鈥?. Two farms that adopted this partial litter re-use practice were studied over one full broiler cycle each. Litter was sampled weekly for the levels (and serovars) of Salmonella during a farming cycle. There was a trend for lower levels of Salmonella (and a lower Salmonella serovar) diversity in the re-used litter environment as compared with the new litter environment. Of the physical parameters examined, it would appear that the lower water activity associated with the re-used litter may contribute to the Salmonella dynamics in the dual environment.