Effect of different altitude on reproductive performances and mineral assessment in Ouled Djellal ewes during the mating period

摘要: The aim of this study is to evaluate reproductive performances and reveal the influence mineral profile on Ouled Djellal ewes reared in different sites during their mating period. Two hundred twenty-six clinically healthy nonpregnant have been used assigned four groups according altitude factor (two plain regions, one tableland region, mountain region). In all groups, oestrus was synchronized with ram affect method, were naturally inseminated; it conducted month May for herds. After 5 months gestation, parameters calculated. Concerning determination plasma its reproduction parameters, blood samples taken from day introduction entire rams into analyzed variables fertility, prolificacy, fecundity, overall averages 78%, 117%, 92%, respectively, which are well below flocks intensive mode. However, lowest rates recorded at region (Ain Zaatout) 65%, 109%, 71%, respectively. Plasma sodium potassium significantly lower fecundable than non-fecundable ewes, whereas calcium levels increased. showed a significant major minerals This made possible describe evolution some elements whether they or not (mountain, tableland, plain) gave us useful information impact parameters.