Analyse des paramètres de la reproduction chez les bovins laitiers dans la daïra de Ghriss Wilaya de Mascara

Abstract

This studywasrealized in the wilaya of Mascara at the level of 08dairycattle exploitations with the aim of estimating the zootechnic performances of dairycows and determining the key points and the weak points of the conduct (driving) of the dairybeefherd. The information collectedfrom a questionnaire of survey (investigation) washandled by the software Excel 2016 for the calculation of the averages and the standard deviation. The analysis of the reproductive criteriashowedthat the V-IAF range iswellabove the acceptednorms, which translates into a V-V intervalexceeding the year. This intervalisdependent on the time lostbetween the first insemination and the inseminationfertilizing (IA1-IAF) and on the other hand to the number of insemination to have a fertilizing (coital index).