The incidence of freemartinism in sheep.

Observations on the Incidence, Epidemiology, Control and Economic Importance of Gastro-Intestinal Parasites of Sheep and Goats in Iran

Seroprevalance of Leptospirosis in Sheep in Maku, Northwest of Iran

This study was conducted on 210 sheep in Maku area in Iran in order to determine seroprevalence of leptospiral infection. Sera were initially screened at dilution of 1:100 against 8 live serovars of Leptospira interrogans: Pomona, Canicola, Hardjo, Ballom, Icterohaemorrhagiae, Automenalis,Australis and Grippotyphosa using the microscopic agglutination test. The prevalence of leptospiral infecti...

Genetic aspects of twinning in cattle.

Twinning in cattle ranges from about 1% for beef breeds to about 4% for dairy breeds. The incidence of double births may have both positive and negative effects, which mainly depends on the purpose for which the cattle are raised. Because of freemartinism, as well as management problems connected e.g. with a greater risk of dystocia and retained placenta, it is an undesirable trait in dairy her...

ارزیابی اثر برنامه واکسیناسیون دام ها علیه تب مالت بر میزان بروز انسانی آن در استان همدان از سال 1381 لغایت 1387

Introduction & Objective: Brucellosis is an important zoonosis considered a serious hazard to public health . Human brucellosis is caused by one of the four species of the brucella genus: B. melitensis is principally found in goats and sheep, B. abortus in cattle, B. suis in swine and B. canis in dogs. Vaccination of young animals, is a strategy to decrease the incidence rate of brucellosis i...

Isolation and Identification of Pasteurella multocida by PCR from sheep and goats in Fars province, Iran

During one year period from 2010 to 2011 the samples from pneumonic animals were taken and transported to the laboratory. Pasteurella multocida were identified in 16.6% of animal by biochemical test. The high incidence of P. multocida was obtained in the south of Fars province, where the area was warm region. The Mean Death Time between the isolates was 12-18 and 19-24 hours. Only the capsular ...