Sarcocystis in lambs
1991
Svobodova, V. (Vysoka Skola Veterinarni, Brno (CSFR))
We studied the problems of sarcocystis in lambs in regard to the transfer of antibodies over ewes to lambs. Antibodies in the blood serum of 26 ewes found out by help of indirect immunofluorescent reaction (NFR) varied within the range from 640 to 5120 titres, while in six cases their level was higher than in blood. In none of new-born lambs there were proved antibodies to the sarcocystosis before the drinking of colostrum but three days later we already detected antibodies in the dilution 1:4 to 1:128. Then we studied the titre dynamics of antibodies in weaned lambs. In the age of 10-18 weeks we proved only low titres of antibodies, from the 20th to the 24th weeks the titres gradually increased and from the 26th to the 30th weeks the level of antibodies increased significantly (5120 titres) with its maximum on about the 28th week. Animals had no clinic symptoms of disease. In the other part of the work we examined the muscular substance of 342 lambs, killed in the slaughter house, by a digestive method and we carried out the blood serologic examination (NFR). Specific antibodies of sarcocystosis were detected in 94.44 per cent of young animals. A high discrepance of the both methods (61.69 per cent) in young animals is a result of a significant antibody reaction with still undeveloped muscular cysts.
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