Causes of disease in two commercial flocks of laying hens.

Australian Veterinary Journal
T M Grimes

Abstract

Laboratory examination of all birds that were culled or died during an eight-month period in two commerical laying flocks was performed to reveal the causes of disease and their prevalence. The average weekly total of diseased birds was greater in one flock (60-69) than the other (27-37). This resulted mainly from a high incidence in the former flock of leucoses and sarcomas, although losses due to fatty liver syndrome, prolapse and cannibalism and cage layer fatigue were also marginally greater in this flock than the second. Haemangiomas occurred more frequently in the flock with the higher disease level. A total of 273 hens of the 2,000 examined from this flock had single or multiple haemangiomas. Special features of the major causes of disease were outlined and discussed. A conclusion made from this study was that histopathological examination is necessary for accurate diagnosis of avian tumours.

References

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Citations

Apr 1, 1995·Australian Veterinary Journal·P J BlackallC J Morrow
Mar 13, 2009·The Veterinary Journal·Neville G Gregory
Jan 1, 1984·Australian Veterinary Journal·G G ReidP J Blackall
Oct 23, 2018·Avian Pathology : Journal of the W.V.P.A·A ShiniW L Bryden
Aug 28, 2018·Scientometrics·Kevin Heffernan, Simone Teufel
Mar 11, 2020·International Journal of Molecular Sciences·Xiaodong TanJie Wen
Dec 8, 2021·Journal of Animal Science and Biotechnology·Yue FengRuqian Zhao

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