Central Sheep & Wool Research Institute, Arid Region Campus, Bikaner-334 002
The data on animals of Nali, Marwari and Indian Karakul breeds which were exposed to an epidemic of PPR in the year 1994 were utilized for genetic studies. The diagnosis of the disease was mainly on the symptoms exhibited by the affected animals, necropsy and histopathological examination. As compared to adults the lambs were more susceptible to the disease. The most vulnerable age group was 60 to 120 days. The fatality rates were 4.26, 7.28 and 9.16% in Indian Karakul, Nali and Marwari breeds, respectively. Statistically the breed effect was not significant and so was the effect of sex of the lamb. The sirewise comparison of the data indicated that progeny of certain sires were more susceptible to the disease as compared to that of others in Marwari breed as well as on pooled breed basis. The paper indicates possibility of raising PPR resistant stock.
