Chacha F, Bouzebda Z, Afri-Bouzebda F, Gherissi D, Lamraoui R, Djaout A and Mouffok C 2018: Effect of some blood metabolites on the conception risk of Montbeliard cows. Livestock Research for Rural Development. Volume 30, Article #89. Retrieved , from http://www.lrrd.org/lrrd30/5/djao30089.html