Login | Request Account (DAF staff only)

Prevalence and disease association of intestinal spirochaetes in chickens in eastern Australia

View Altmetrics

Stephens, C.P. and Hampson, D.J. (1999) Prevalence and disease association of intestinal spirochaetes in chickens in eastern Australia. Avian Pathology, 28 (5). pp. 447-454. ISSN 0307-9457

Full text not currently attached. Access may be available via the Publisher's website or OpenAccess link.

Article Link: https://doi.org/10.1080/03079459994461


Faecal samples (n = 1786) from chickens in broiler breeder (n = 28), layer (n = 22) or broiler (n = 19) flocks in the eastern states of Australia were cultured for intestinal spirochaetes. Overall, birds in 42.9% of broiler breeder and 68.2% of layer flocks were colonized with spirochaetes, but no birds in broiler flocks were infected. Colonization rates in infected flocks ranged from 10 to 100% of birds sampled. Faeces from colonized flocks were on average 14% wetter than those from non-colonized flocks. There was a highly significant association between colonization with spirochaetes and the occurrence of wet litter and/or reduced production. A subset of 57 spirochaete isolates from birds in 16 flocks were identified to the species level using a panel of polymerase chain reaction tests. Isolates from nine (56%) of these flocks were spirochaetes that are known to be pathogens of poultry: Serpulina pilosicoli was isolated from birds from five flocks, birds from two flocks were infected with Serpulina intermedia, and in two other flocks both species were identified. Isolates from the other seven flocks belonged to other Serpulina species, which are currently of unknown pathogenicity. This study indicates that infections with intestinal spirochaetes are a common but currently under-diagnosed cause of wet litter and/or reduced egg production in broiler breeder and layer flocks in Australia.

Item Type:Article
Subjects:Veterinary medicine > Veterinary epidemiology. Epizootiology
Veterinary medicine > Diseases of special classes of animals > Avian
Live Archive:14 Feb 2024 23:09
Last Modified:14 Feb 2024 23:09

Repository Staff Only: item control page