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Received: Revised: Accepted: Published online: January 08, 2019 March 08, 2019 March 20, 2019 April 23, 2019 The study evaluated the efficacy of three different Peste des petits ruminants (PPR) vaccines and assessed the appropriate age of vaccination in lambs born without maternal antibodies at Livestock Experimental Station, Rakh Ghulaman. The lambs (n=94) were divided into ten groups. The lambs in Group A1 (1-<2 month), A2 (2-3 months) and A3 (>3 months) were vaccinated with PPR vaccine from company A and the lambs in Group B1 (1-<2 month), B2 (2-3 months) and B3 (>3 months) were vaccinated with PPR vaccine from company B. However, PPR vaccine from company C was given to four groups of lambs (Group C1, C2, C3 and C4). Serum samples were collected from experimental animals at monthly intervals for five months. Sera were analyzed using c-ELISA. The results indicated that most appropriate age of vaccination against PPR in lambs without maternal antibodies is 2-3 months with any of three vaccines. However, vaccine C may also be used at the age of < 1 month to get protection against PPR. ©2019 PVJ. All rights reserved

Efficacy of Three Different Peste des Petits Ruminants (PPR) Vaccines and Determination of Appropriate Age of PPR Vaccination in Lambs