مرکز منطقه ای اطلاع رساني علوم و فناوري -

چكيده لاتين :

"Peste des Petits Ruminants" (PPR) is one of the most dangerous viral diseases affecting small ruminants leading to high mortality among non-vaccinated animals (25% of newly born sheep and goats). The purpose of the study is to carry out sero surveillance for the detection of the incidence of the disease. PPR is caused by a Morbillivirus genus, Paramyxoviridae family. A competitive Elisa "specific" test was performed on nonvaccinated by PPR vaccine 2205 goat and 1300 sheep blood sera. Results showed the presence ofPPR virus antibodies in 52% ofindividual goat, 62.5% ofgoat flocks and 81% of goat in mixed flocks; and 61.5%, 75.8% and 73.8 % in sheep individuals and flocks respectively. The Bekaa and South Lebanon are the most infected. On the other hand 979 cow blood sera were tested to detect the presence of PPR virus antibodies. The results showed that 5.72% of the cows was positive, mainly in the Bekaa (9.5%) and 13.45% ofthe cattle farms spread in different regions ofthe country. Yearly calvesי sera were free ofPPR antibodies. A newly developed vaccine by CIRAD/ FRANCE and manufactured by JOVAC/ JORDAN was used for the purpose of controlling the development of immunity rates in vaccinated small ruminants. During 9 months ofstudy, imported and local sheep and goats sera (968) were tested before and after vaccination. Results showed that age, gender, and management did not show any differences in antibody titers. Goats seem to have better immune response than sheep. Local goats showed better immune response compared to imported breeds. It is therefore recommended to conduct a mass vaccination campaign covering the whole flock ofsmall ruminants in order to limit economical losses caused by the disease.