Respiratory Mycoplasma Infection in Chickens in Nsukka Agro-Ecological Zone, Enugu State, Nigeria
Journal Title: Journal of Veterinary Advances - Year 2015, Vol 5, Issue 7
Abstract
Mycoplasmas were isolated from 12(3.8%) of the 312 chickens sampled.3 (20%) of the farms were positive for mycoplasmas and were all located in Nsukka LGA. Out of 12 mycoplasmas isolated, 7(58%) were Mycoplasma species, while 5 (42%) were Ureaplasma species. The Mycoplasma species were isolated from clinically healthy birds while the Ureaplasma species were from birds with respiratory signs. None of the mycoplasmas hydrolysed arginine, while all (100%) were sensitive to digitonin, 10 (83.3%) fermented glucose and 5 (41.7%) hydrolysed urea. Four (33.3%) of the isolates were sensitive to erythromycin, while 5 (41.7%), 9 (75%), 11 (91.7%), 11 (91.7%) were sensitive to streptomicin, gentamicin, tetracycline and ciprofloxacin respectively. Experimental infection was established and mycoplasmas were re-isolated from all infected groups. No clinical signs were observed in any of the infected birds. Oxytetracycline treated birds remained infected throughout the duration of experiment. Infection in the Tylodox® and tylosin (pure) treated groups was eliminated by days 6 and 2 post treatment respectively.
Authors and Affiliations
N. Kalu , K. F. Chah , B. M. Anene , W. Ezema
Keywords
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