Objective:To determine the prevalence,identify the species involved and assess possible risk factors of lungwonn infection in small ruminant slaughtered in abattoir of Mashhad in the northeast of Iran from October 201...Objective:To determine the prevalence,identify the species involved and assess possible risk factors of lungwonn infection in small ruminant slaughtered in abattoir of Mashhad in the northeast of Iran from October 2010 -August 2011.Methods:Faecal and post mortem examination were conducted on 350 and 2 500 animals,respectively.Results:The overall prevalence of lungwonn infection was 10.85%and 3.80%in coproscopic and post mortem examination respectively,and this difference was found to be significant.Higher prevalence of lungwonn infection was recorded in post mortem examination in sheep(4.1%) than in goats (0.5%)(P【0.05).The proportion of infection with Dictyocaulus filaria,Protostrongylus rufescens and mixed infection were 3.7%,0.1%and 0.2%in sheep while in goats,the infection was reported with Dictyocaulus filaria(0.5%) only.The seasonal dynamics of lungwonn infection showed that prevalence was highest in winter(7.8%) with a remarkable decline during the dry time(summer) (0.8%) which the difference was significant(P【0.001).The animals of less than one year old showed greater infection in post mortem examination than older animals significantly(P【0.001). Also,the infection rate between male and female animals showed significant difference(P【0.05) with prevalence rate of 4.6%and 2.0%,respectively.Conclusions:Due to its impact on production, emphasis should be given for the control and prevention of lungworm infection in this area.展开更多
基金supported by the Ferdowsi University of Mashhad (Grant number 709)
文摘Objective:To determine the prevalence,identify the species involved and assess possible risk factors of lungwonn infection in small ruminant slaughtered in abattoir of Mashhad in the northeast of Iran from October 2010 -August 2011.Methods:Faecal and post mortem examination were conducted on 350 and 2 500 animals,respectively.Results:The overall prevalence of lungwonn infection was 10.85%and 3.80%in coproscopic and post mortem examination respectively,and this difference was found to be significant.Higher prevalence of lungwonn infection was recorded in post mortem examination in sheep(4.1%) than in goats (0.5%)(P【0.05).The proportion of infection with Dictyocaulus filaria,Protostrongylus rufescens and mixed infection were 3.7%,0.1%and 0.2%in sheep while in goats,the infection was reported with Dictyocaulus filaria(0.5%) only.The seasonal dynamics of lungwonn infection showed that prevalence was highest in winter(7.8%) with a remarkable decline during the dry time(summer) (0.8%) which the difference was significant(P【0.001).The animals of less than one year old showed greater infection in post mortem examination than older animals significantly(P【0.001). Also,the infection rate between male and female animals showed significant difference(P【0.05) with prevalence rate of 4.6%and 2.0%,respectively.Conclusions:Due to its impact on production, emphasis should be given for the control and prevention of lungworm infection in this area.
