University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 10 2 2016 04 01 Comparison of Leptospira interrogans infection in the goats and sheep مقایسه آلودگی به لپتوسپیرا اینتروگانس در گوسفند و بز 113 119 57897 10.22059/ijvm.2016.57897 EN Mohammad Haji Hajikolaei Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran Sareh Rezaei Department of Clinical sciences, faculty of Veterinary Medicine, Shahid Chamran University, Ahvaz, Iran Alireza Ghadrdan Mashhadi Department of Clinical sciences, faculty Of Veterinary Medicine, Shahid Chamran University, Ahvaz, Iran Masoud Ghorbanpour Department of Pathobiology, faculty Of Veterinary Medicine, Shahid Chamran University, Ahvaz, Iran Gholamreza Abdollahpour Department of Clinical sciences, faculty Of Veterinary Medicine, Tehran University, Tehran, Iran Journal Article 2016 01 25 Background: Most leptospiral infections in sheep and goat are asymptomatic but may result in high fever, abortion, stillbirth, agalactiae. There is a different foraging behavior between sheep and goat that may cause the different prevalence of Leptospira interrogans infection in sheep and goats. OBJECTIVES: The purpose of the present study was to compare the prevalence of L. interrogans antibodies in sheep and goats. METHODS: Blood samples were taken from 246 sheep and 210 goats in 12 herds from 8 areas of Ahvaz where the animals were kept together. Sera were initially screened at dilution of 1:100 against 8 live serovars of L. intrrogans: pomana, canicola, hardjo, ballom, ictrohaemorrhagiae, grippotyphosa, tarasovi and australis using the microscopic agglutination test (MAT). RESULTS: The prevalence of leptospiral infection was 8.53% in sheep and 10.95% in goats. The highest reacting leptospira in both species was L.i. Pomona with a reactor rate of 68.18% in sheep and 56% in goats, followed in descending order by ictrohaemorrhagiae (18.8%), canicula, hardjo and grippotyphosa (each of them 4.54%), in sheep and ictrohaemorrhagiae (28%), canicula (16%) in goats. Statistical analysis showed that were no significant differences between sheep and goat (P=0.428). There were no significant differences among age groups in sheep (p=0.301) and goats (p= 0.363), but there was a tendency in adults sheep and goats (≥3years) to be more seropositive than young sheep and goats. Seroprevalence of leptospiral infection among various areas in sheep (p= 0.464) and goats (p= 0.710) was also not significantly different. CONCLUSIONS: It is concluded that there is no difference between sheep and goats in terms of leptospiral infection when they are kept together in the same herd and husbandry condition.

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