[Study of the outcome of pregnancy in sheep with positive serologic reactions to toxoplasmosis according to the complement fixation test].
Studied were five flocks of 240 sheep each. It was found that prior to impregnation the positive complement-fixation test (c. f. test) reagents varied from 16 to 61 per cent with titers ranging from 1:50 to 1:10. Abortions, however, were established only in two of the flocks consisting of young sheep, aged 3 and 4 years, at the first or second lambing. The abortions took place in the fourth month of pregnancy. In one of these flocks having 43 per cent positive reagents there were 40 per cent returns, and 28 of the ewes miscarried, 12 of them being positive for toxoplasmosis. In the second flock there were 61 per cent positive reagents, and 9 of the ewes miscarried, 5 of them being positive for toxoplasmosis. In the remaining three flocks consisting of 5-year-old sheep there were no abortions. The ewes that miscarried and were positive for toxoplasmosis showed a rise in their serum titers: from 1:40 on the 15th day after the abortion to 1:80 on the 30th day. It is believed that in these sheep the abortions are not due to toxoplasmosis, and in sheep flocks with a high percent of positive toxoplasmosis reagnets there may not be abortions.
D000034:Abortion, Veterinary / Q000209:etiology*; D000367:Age Factors; D000818:Animals; D003168:Complement Fixation Tests; D005260:Female; D005865:Gestational Age; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000150:complications* / Q000175:diagnosis; D014124:Toxoplasmosis, Animal / Q000150:complications* / Q000175:diagnosis
Prouchvaniia v'rkhu izkhoda na bremennostta pri ovtse, serologichno reagirali polozhitelno za toksoplazmoza po RSK