Abstract
The purpose of this study was to evaluate the role and variety of Mycoplasma arginini (M. arginini) in respiratory manifestation in sheep and goat flocks. M. arginine, were isolated from 40 nasal swabs out of 160 nasal swabs examined which obtained from (79) sheep and (81) goat with respiratory manifestations. In sheep, the percent of isolation was (25.32%), 20 isolate out of 79 nasal swabs, while the percent of isolation in goat was (24.69%) 20 isolate out of 81 nasal swabs examined. Higher percent of isolation was found in age group (1- 2) year old sheep (50%) as 7 isolates out of 14 nasal swabs examined, while in goat the higher percent of isolation was in age group less than one year by 44% (11 isolates out of 25 nasal swabs examined. The lower isolation rates were found in adult sheep and goat (3 - 4 years old) by 15.38% in sheep and 6.45% in goat. Mycoplasma isolates was molecularly characterized by PCR and DNA sequencing as M. arginini and submitted to Gen Bank. An accession number has been assigned to each nucleotide sequence and was KP972458-KP972459.
Highlights
Respiratory diseases can cause prolonged illness or even sudden death in sheep and goat
Higher percent of isolation was found in age group (1- 2) year old sheep (50%) as 7 isolates out of 14 nasal swabs examined, while in goat the higher percent of isolation was in age group less than one year by 44%
Mycoplasma isolates was molecularly characterized by Polymerase chain reaction (PCR) and DNA sequencing as M. arginini and submitted to Gen Bank
Summary
Respiratory diseases can cause prolonged illness or even sudden death in sheep and goat. Pneumonia appear in all ages of sheep, which has a direct effect on their growth and plays important role in lamb mortality (Thonney et al, 2008), more over contagious caprine pleuropneumonia (CCPP) from the pneumonic diseases which exaggerate economic losses due to the risk of death in goat flocks (Ruragirwa and McGuire, 2003). It may be bacteria, Chlamydia, Mycoplasma, or viruses. Pasteurellosis or mannheimiosis, the most predominant causes especially in sheep while Mycoplasma pneumonia is often unnoticed. M. arginini in sheep and goat is an important pathogen by itself but co infection by M. haemolytica exaggerates the pathologic injury of Other bacteria infrequently present with respiratory disease in small ruminants are Arcanobacterium pyogenes, Staphylococcus spp., Streptococcus spp., Haemophilus spp., and Klebsiella pneumonia (Nicholas et al, 2008a).
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