However, if she is introduced to this hormone during the ninth week of lactation, as recommended, and it is used to prolong the period of heavy lactation, the cow takes a longer time to again become fertile, and often does not " take" when bred.
Toutefois, si on lui fait prendre cette hormone durant la neuvième semaine de lactation, tel que recommandé, afin de prolonger la période où la production laitière est abondante, il se passe plus de temps avant que la vache redevienne fertile.