Study on the Seasonal Dynamics of Lungworm Infections in Small Ruminants Slaughtered in Tiaret (Algeria)

Institute of Veterinary Science, Ibn-Khaldoun University of Tiaret, Tiaret 14000, Algeria


Kouidri, M., S. S. M. Selles, A. Boulkaboul, C. Khellil, H. Belcacem and Z. Nouar, 2017. Study on the seasonal dynamics of lungworm infections in small ruminants slaughtered in Tiaret (Algeria). Bulg. J. Agric. Sci., 23 (1): 142–146

A slaughterhouse survey was performed for one year (from March 2013 to April 2014) in order to determine the prevalence and intensity of lungworm infections per season in both sheep and goats in the Tiaret region. Of 2285 sheep and 743 goats examined, 395 and 116 were positive for lungworm infection, respectively. In sheep, the highest and the least rate of infection was in winter (21%) and autumn (15%), respectively. Spring and summer showed an equal rate (18%). In goats, the highest and the least rate of infection was in spring (26%) and autumn (11%) (P<0.05), respectively. In the current study, four species of bronchopulmonary nematodes were identifi ed, namely: Muellerius capillaris, Protostrongylus rufescens, Dictyocaulus fi laria and Neostrongylus linearis. The present study showed that M. capillariswas the highest prevalent in relation to other species of lung worm in both sheep and goats followed by P. rufescens in sheep and mixed infections in goats. The seasonal dynamics of M. capillaris showed that: for sheep the highest prevalences were in autumn (88.71%) and winter (75.61%). In goats, highest rates were recorded in autumn (87.5%), in winter (50%) and spring (50%). This study showed high prevalence of lungworm infections in the study area implying the need for control intervention. M. capillaris was the most frequently, especially in autumn and winter. N. linearis exist in the study area.

Key words: lungworm infection; sheep; goats; Muellerius cappilaris; Protostrongylus rufescens; Dictyocaulus filarial; Neostrongylus linearis

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