The potential for identifying heritable endocrine parameters associated with fertility in post-partum dairy cows

bovin breeding methods breeding programmes cattle ciclo estral conception rate cycle oestral dairy cows endocrinologia endocrinologie endocrinology females femelle fertilidad fertilite fertility follicule ovarien ganado bovino gene expression hembra hormonas hormone hormones milk yield oestrous cycle ovarian follicles performance de reproduction progesterona progesterone rendement laitier rendimiento lechero reproductive performance reproductividad selection vacas lecheras