The high producing dairy cow of the 21st century is subfertile during lactation. Our objectives
are to characterize physiological periods limiting reproductive performance and to describe …

Insulin-like growth factor-I (IGF-I) plays a pivotal role in cattle fertility, acting as a monitoring
signal that allows reproductive events to occur when nutritional conditions for successful …

The objective was to conduct a broad survey of dairy management practices that have an
effect on animal well-being. Dairies were visited during the fall and winter of 2005 and 2006 …

The aim of this study was to test the effect of expression of estrus at artificial insemination
(AI) on endometrium, conceptus, and CL gene expression of beef cows. Thirty-six …

The objective was to examine effects of bovine somatotropin (bST), pregnancy, and dietary
fatty acids on reproductive responses in lactating dairy cows. Beginning at approximately 17 …

Nutrition of the donor cow can influence oocyte and embryo quality, which can affect the
success of embryo transfer. Severe undernutrition compromised ovarian follicular …

Culture of bovine embryos in the presence of insulin-like growth factor-1 (IGF-1) can
increase pregnancy rates following transfer to heat-stressed, lactating dairy cows. The …

Poor conception rates in highly productive lactating cattle is especially prevalent in large,
intensively-managed commercial herds. One of the causative factors is sub-optimal pre …

IGF1 plays an important role in bovine follicular growth, acquisition of oocyte competence
and embryo viability. Current data also indicate a critical role for IGF1 in both the ovarian …

Objectives were to evaluate the effects of administering either one or two low doses of slow-
release recombinant bovine somatotropin (bST) on hormone concentrations, conceptus …