[HTML][HTML] Nutritional interactions with reproductive performance in dairy cattle

WR Butler - Animal reproduction science, 2000 - Elsevier
Increased capability for milk production has been associated with a decline in fertility of
lactating cows. Nutritional requirements increase rapidly with milk production after calving …

A review of the effects of supplementary nutrition in the ewe on the concentrations of reproductive and metabolic hormones and the mechanisms that regulate …

RJ Scaramuzzi, BK Campbell… - Reproduction …, 2006 - rnd.edpsciences.org
This paper discusses the phenomenon of nutritional flushing in ewes whereby increased
nutrition stimulates folliculogenesis and ovulation rate. In addition the paper reviews recent …

Energy balance relationships with follicular development, ovulation and fertility in postpartum dairy cows

WR Butler - Livestock production science, 2003 - Elsevier
Increased capacity for milk production in dairy cows has been associated with a decline in
fertility. Following parturition, nutritional requirements increase rapidly with milk production …

Control of follicular growth: Local interactions and nutritional influences,

R Webb, PC Garnsworthy, JG Gong… - Journal of animal …, 2004 - academic.oup.com
Regulation of ovarian activity is an integrated process encompassing both extraovarian
signals and intrafollicular factors. Initiation of primordial follicle growth and the early stages …

Regulation of ovarian follicular growth by somatotropin and insulin-like growth factors in cattle

MC Lucy - Journal of Dairy Science, 2000 - Elsevier
Somatotropin (ST), insulin-like growth factor (IGF)-I, and IGF-II affect animal growth and
lactation as well as animal reproduction. Understanding the effects of ST and the IGF on …

Effect of dietary energy and protein on bovine follicular dynamics and embryo production in vitro: associations with the ovarian insulin-like growth factor system

DG Armstrong, TG McEvoy, G Baxter… - Biology of …, 2001 - academic.oup.com
Heifers were assigned either low or high (HE) levels of energy intake and low or high
concentrations of dietary crude protein. The effect of these diets on the plasma …

Regulation of corpus luteum function in cattle–an overview

D Schams, B Berisha - Reproduction in domestic animals, 2004 - Wiley Online Library
Contents The corpus luteum (CL) is a transient reproductive gland that produces
progesterone (P), required for the establishment and maintenance of pregnancy. Although …

The role of endocrine insulin-like growth factor-I (IGF-I) in female bovine reproduction

MA Velazquez, LJ Spicer, DC Wathes - Domestic animal endocrinology, 2008 - Elsevier
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 …

Relationships between the plasma concentrations of insulin‐like growth factor‐I in dairy cows and their fertility and milk yield

VJ Taylor, Z Cheng, PGA Pushpakumara… - Veterinary …, 2004 - Wiley Online Library
The relationships between insulin‐like growth factor‐I (IGF‐I) and the fertility and milk yield
of Holstein‐Friesian dairy cows were investigated. The concentration of IGF‐I in blood was …

[PDF][PDF] IGF1 induces up-regulation of steroidogenic and apoptotic regulatory genes via activation of phosphatidylinositol-dependent kinase/AKT in bovine granulosa …

AM Mani, MA Fenwick, Z Cheng, MK Sharma… - …, 2010 - researchgate.net
IGF1, a potent stimulator of cellular proliferation, differentiation and development, regulates
granulosa cell steroidogenesis and apoptosis during follicular development. Depending …