In vitro production (IVP) of embryos and associated technologies in cattle have shown
significant progress in recent years, in part driven by a better understanding of the full …

The oestrous cycle in cattle lasts for 18–24 days. It consists of a luteal phase (14–18 days)
and a follicular phase (4–6 days). During the cycle there are generally two (dairy cows) or …

Management, nutrition, production, and genetics are the main reasons for the decline in
fertility in the modern dairy cow. Selection for the single trait of milk production with little …

Contents There is evidence that the reproductive performance of dairy cows has declined as
milk yields have increased over the last 40 years. Identifying the precise cause (s) of this …

The livestock industry and animal scientists have long recognized the importance of proper
nutrition for cattle to achieve reproductive success. Timely resumption of estrus following …

Cytokines are key regulators of ovarian physiology, particularly in relation to folliculogenesis
and ovulation, where they contribute to creating an environment supporting follicle selection …

The paper presents an update of our 1993 model of ovarian follicular development in
ruminants, based on knowledge gained from the past 15 years of research. The model …

Contents There is a variable anoestrous period following parturition in the cow. Follicular
growth generally resumes within 7–10 days in the majority of cows associated with a …

Fatty acids, n-3 as well as n-6, are essential for normal physiological functioning and for the
health of humans and all domestic species. It is important to emphasize an adequate …

The somatotropic axis, consisting of growth hormone (GH), hepatic insulin‐like growth factor
I (IGF‐I), and assorted releasing factors, regulates growth and body composition …