Seasonal prevalence of primary disease dairy herds in north-eastern of Algeria

Abstract

The serums coming from 450 dairy cows have been analyzed for the detection of the brucellosis, the prevalence observed of the infection is of 10-44%, the test of the Intradermotuberculination for the detection of the tuberculosis raised that the prevalence observed of the infection is of 8-22%, with a significant difference (p<0.05) between the individuals of 2 years and those aged of >4 years. All studied sanitary trouble were present during all year with a predominance of the mastitis especially in beginning of spring, where the prevalence attain 44-88% and or the troubles of reproduction bound have the stake bottom were the order of 14-88%, the respiratory trouble especially appeared in winter with a peak of 21-77%, the digestive trouble were the order of 11 % in the spring whereas the parasitosis, the piroplasmosis reached their maximum in summer with 21-55%, the locomotive trouble were constantly present all along the year touch the same beasts practically, with a peak in estimated winter to 18-22%, what showed that the season has an effect on the emergence of these different trouble with a valor highly significant p<0.001. © Medwell Journals, 2010.