Environmental effects on progesterone profile measures of dairy cow fertility

Environmental effects on progesterone profile measures of dairy cow fertility.

Environmental effects on fertility measures early in lactation, such as the interval from calving to first luteal activity (CLA), proportion of samples with luteal activity during the first 60 days after calving (PLA) and interval to first ovulatory oestrus (OOE) were studied. In addition, traditional measurements of fertility, such as pregnancy to first insemination, number of inseminations pe...

environmental effects of gol-e-gohar iron ore mine on groundwater of the area

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

Effects of barley grain particle size on dairy cow performance

Dietary Fatty Acids and Dairy Cow Fertility

Effects of Nutrient Metabolism and Excess Protein Catabolism on Dairy Cow Fertility

• The metabolism of excess dietary protein results in high plasma urea nitrogen (PUN) concentrations • High PUN concentrations (and ammonia to a lesser extent) are associated with decreased fertility in lactating dairy cows • High PUN concentrations probably affect fertility via direct toxic effects on the oocyte and embryo, alterations in the uterine environment and decreased progesterone secr...