Contribution à l’étude des performances de croissance des caprins et qualité physicochimique du lait dans la région de Ghardaïa

Abstract

This research focuses on studying the growth performance of kids and the quality of goat's milk in the Ghardaïa region. In order to characterise the growth of the animals, weekly weighing was carried out between birth and 12 weeks of age. Average daily gains (ADGs) were also calculated. Growth results were presented for all kids as a function of sex and litter size on different farms. As for the quality of colostrum and milk at different stages of lactation, several parameters were evaluated, such as fat content, protein, lactose (milk), fat-free dry extract (milk), pH, acidity, dry matter and mineral matter. The results generally showed a reduction in the nutritional quality of milk compared with colostrum on all farms. The difference in weight between the two sexes was remarkable, as was the difference between types of farrowing.