Anomalies de la Reprise de Cyclicité après le vêlage chez la vache laitière dans la diara de Achaacha

Abstract

The présent sturdy was conducted on 16 farms in the daïra of Achaacha out of a total of 92 dairy cows. The satudy on thèse females in the daïra in 2017 by veterinarian shows between 52 and59℅ of normal profiles ,about 12℅ of cows with prolonged activité and 15 ℅ of prolonged luteal phases. The study conducted in 2018 on 04 communes revealed a normal profil rate lower than that of the previous year with a différence of 5.38%.comparable rates for prolonged sexualité inactivité 11.75 to 10.62 The criterion Calving intervalle between 365 and 400 days represents60 ℅of the workforce . As for cows with intervals greater than 400 days, their percentage is about one quarter of the total. For heat returns 73℅ of Cows are inseminated between 70and 90 days