Optimization methods for correcting the duration of the anovulatory period of cattle

Post-calving anestrus leads to serious economic losses and is the reason for animal culling. Deficiency of estrogen hypofunctional state ovaries due negative energy balance, as well violations timing postpartum involution uterus are considered leading causes an extended anovulatory period in fresh cows. A comparison was made therapeutic efficacy Ovsynch scheme Ovariovit preparation when used first heifers with post-calving against background ovarian hypofunction. When using scheme, fertility insemination 50%; estrous cyclicity recovered 80% heifers. Ovariovit, 60%; cycle restored 100%