Impaired fertility during periods of heat stress is the culmination of numerous physiological
responses to heat stress, ranging from reduced estrus expression and altered follicular …

Current knowledge about the function of the reproductive tract and appropriate use of
hormonal drugs affords control of the oestrus cycle of cows. One of the hormonal protocols is …

Sažetak Hot seasons of the year are accompanied by significant losses for dairy farmers.
Stress in cattle breeding causes various physiological disorders of vital organs and systems …

In dairy cows, subjected to a G6G protocol, objectives were to determine effects of (1)
extending the interval from prostaglandin F2α (PGF2α) to gonadotropin-releasing hormone …

Identifying cows in estrus remains a challenge on dairy cattle farms, and tools and
technologies have been developed and used to complement or replace visual detection of …

This study was done to investigate the effect of feeding linseed on blood metabolites,
incidence of cystic follicles, resumption of postpartum ovarian cyclicity, pregnancy rate, milk …

The objectives of this study were to determine the effect of PGF 2α treatment 14 d before the
initiation of a G6G or G7G (PGF 2α, 2 d, GnRH, 6 or 7 d, Ovsynch) protocol on ovarian …

The main objective of the research was to study the environmental “price” of the large-scale,
milk production from a rarely known perspective, from the map** of the estrogenic footprint …

Context Summer ambient temperature and humidity are major factors negatively influencing
the physiology and the productive and reproductive efficiency of dairy cows. Various …

Fertility to timed AI (TAI) is profoundly affected by progesterone (P4) levels during hormonal
synchronization protocols. Holstein-Friesian dairy cows managed in a seasonal-calving …