[Diagnostic value of serological and bacteriological methods in sheep affected with S. abortus-ovis and Chlamydia psittaci var. ovis infections]. / Diagnostichna stoinost na serologichniia i bakteriologichniia metod pri ovtse, zasegnato ot infektsiia sus S. abortus-ovis i Chlamydia psittaci var. ovis.

It was found that the shedding of Salmonella organisms by sheep with Salmonella abortions was most active during the first fifteen days following abortions or lambing. In sheep affected with a mixed Salmonella abortus ovis and Chlamydia psittaci var. ovis infection this period was longer (about 30 days). The excretion of Salmonella organisms was more strongly manifested with the vaginal discharge than with the feces, urine, and milk. No correlation was established between the titer value of the antibody level against Salmonella abortus ovis and the results of the bacteriologic investigations. There was such correlation only with animals with y positive hemoculture finding in but the period from the first to third day following abortion.

[Serodiagnosis of pregnancy in the cow with the latex passive agglutination technic]. / Diagnostic sérique de la gestation chez la vache avec la technique d'agglutination passive de particules de latex.

This paper describes a test for diagnosing pregnancy in the cow based on the detection of blastocyst antigens in the maternal blood circulation. Rabbit anti-bovine embryo serum was agglutinated with the sera of non-pregnant cows to obtain specific antibodies. These rabbit antibodies were then absorbed on latex beads which could then be used for the standard passive agglutination reaction. This diagnostic technique was tested on 415 animals. The results on pregnant cows were successful in 78 p. 100 of the cases (confidence interval: 69-86 p. 100) and on non-pregnant cows 94 p. 100 of the time (confidence interval: 90-97 p. 100). This test is independent of the status of the ovaries and of the pregnancy stage. Detection is reliable from day 26 after coitum.