Situation sanitaire mammaire et facteurs de risque des mammites en élevage bovin hors sol en Tunisie

Abstract

The objective of this work is to assess the health status of breast cows from

the Individual Cell Count (CCI) and the Cellular Rate of Herd (TCT) and

determine the probable risk factors for mastitis. The study was performed on

a sample of 40 non-grazing cattle in the region of Monastir (Tunisia). The

breast health result has been achieved by direct cell counting methods on

cow's milk and the herd’s mixed milk. Some mastitis’ risk factors were

persuaded from a survey, an hygienic and technical monitoring of milking site

and a control of milking machines about hygienic, technical and technological

plans. It appears that respectively 66 and 52% of cows have arithmetic (MA)

and geometric average (MG) of CCI > 200000 cell. / ml. About herds, 85 and

75 % of farms have respectively MA and MG of TCT > 200000 cell. / ml. The

study of individual parameters in relation with the CCI showed that only the

cows’ cleanliness had an effect on the CCI, while the study of milking

conditions correlated with cell counts, detected the impact of some milking

practices and some technological characteristics on the CCI and TCT.