PARAMETRES D’ELEVAGE ET DE TRAITE ASSOCIES AUX ELEVATIONS CELLULAIRES INDIVIDUELLES EN ELEVAGE BOVIN LAITIER HORS SOL (TUNISIE)

Abstract

The study was conducted on a sample of 40 cattle farms above ground type in the region of Monastir (Tunisian Sahel). Mastitis Risk factors were collected during visits farms (breeding and milking conditions) and by animals supervising (udders Conformation and cleanliness). The descriptive analysis of data relating to breeding and milking conditions helped to highlight some factors having significant effects on in individual cell counts (ICC) changes and on the probability of the spread of mastitis. In housing, the analysis revealed that the free stalling is responsible for the elevation of the ICC with a tendency to influence this cell counts (P < 0.1). At milking equipment, cleaning with water only, the milking machine and the bad condition of the piping of the milking machine are the two parameters that have significant effects on the increase in cellular levels of milk. The practice of eliminating the first streams of milk is also highly significant, therefore, the ICC are highest among the breeders who ignore this step. Concerning the animal, all parameters of udder conformation were not disclosed to affect the ICC. For cons, the effect of bad cleanliness of the udder and hind legs is significant to the elevation of ICC.