CLINICAL OBSERVATION AND ISOLATION OF EQUINE ASPERGILLUS SPECIES IN ABIA, ENUGU AND RIVERS STATES, NIGERIA

Authors

  • Tchokote, E. Y. Department of Veterinary Medicine, College of Veterinary Medicine, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria
  • Okonkwo, I. J. Department. of Veterinary Microbiology, College of Veterinary Medicine, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria
  • Talabi A. O. Department of Veterinary Medicine, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria

Keywords:

Clinical Observation, Isolation, Equine Aspergillus species

Abstract

This study attempted to observe and isolate equine Aspergillus species in Abia, Enugu and Rivers State, Nigeria. Observation of animals with disseminated aspergillosis showed that it is difficult to diagnose this condition early enough for successful treatment but adequate prognosis could be possible based on presence of lipid band in spun sera of sick horses. Affected animals had episodes of drastic weight loss prior to first appearance of creamy white crusty lesions on the lower parts of the limbs which progress to all parts of the body. Physiological parameters and liver enzymes remained non indicative of disease until close to recumbency. In fatal disease there was increase respiratory rate and subnormal rectal temperature. Ninety six sera and nasal swab samples each obtained from (34) ObolloAforin horse market, Udenu, Enugu State, 7 research and domestic horses from Umuahia  Abia State, 55 horses from Polo Club Port-Harcourt, Rivers State were screened for aspergillus infection by culture and isolation. There was no growth from serum and nasal swab samples of market and domestic horses managed on extensive and semi-extensive system respectively. Aspergilli growths were identified from nasal swab (four) of horses from polo club, managed intensively. Aspergillus fumigatus, A. flavus, Citrobacter diversus,Citrobacter freundi were isolated from blood, skin and nasal swab of animals with fatal infection. There was no sex, breed or age predisposition to infection using ?2 test (?=0.79, 0.81, 0.52) respectively at 5% confidence interval, but a positive susceptibility related to management and uses of animals was observed (?= 0.027and 0.028) respectively. Though a fatal disease, aspergillosis was found uncommon in horses screened using basic laboratory procedures.

Published

2020-06-30