Feeding conjugated linoleic acids (CLA) improves reproductive performance in dairy cows; however, the molecular mechanisms by which CLA improves reproduction are not well understood. Therefore, we evaluated whether the CLA isomers, trans-10, cis-12 CLA and cis-9, trans-11 CLA altered synthesis of steroidogenic hormones in bovine luteal cells by measuring concentrations...
Cystic ovarian disease (COD) is an anovulatory condition in cattle
that afflicts between 6-18% of all dairy cows in the US. Ovulation is
dependent on the plasminogen activator (PA) family of proteases
and protease inhibitor for proteolysis, culminating in follicular rupture.
Failure of the follicle to ovulate suggests an aberration...
Many studies have shown that dairies consistently overfeed nutrients such as phosphorus (P) and potassium (K). This practice is expensive and potentially damaging to the environment and to animal health. This publication suggests ways to improve feed management and thus avoid overfeeding P and K. Proper ration balancing is good...
Milk production can be increased by managing dairy cows’ exposure to light. Photo period is defined as the duration of light exposure within a 24-hour period. A long-day photo period (LDPP) means exposure to 16–18 hours of continuous light followed by 6–8 hours of continuous darkness. A short-day photoperiod (SDPP)...
Keeping track of nutrient levels in dairy pastures has become an important part of farm management plans. The current recommendation is to fertilize pastures at a level to replace, in equal measure, the nutrients removed through grazing or cutting each year. The Confined Animal Feeding Operations Program (CAFO) run by...
When you want to talk about dairy cattle with someone, you need accurate, meaningful vocabulary words (terminology or terms) in order to understand each other. When you give a set of reasons, an accurate set of terms is just as important as it is in conversation. Also, to compare one...
Ruminal microorganisms require nitrogen and energy for microbial crude protein
(MCP) synthesis. High-quality grass provides an excess of readily available proteins
relative to available carbohydrates which reduces the conversion efficiency of grass
protein to MCP. Nonstructural carbohydrates (NSC) are the primary source of readily
available energy. Objectives of trial 1...
There is growing public concern about the high proportion of saturated fatty acids in milk fat; however, feed intake, energy partitioning toward milk synthesis, and milk fat concentrations can decrease when cows are fed high concentrations of unsaturated lipids. The objective of this study was to identify the optimal rate...
Incidences of uterine infections in dairy cattle are high between parturition and Day 21 postpartum. Dairy cows with uterine infections are at risk for prolonged periods of days open and multiple services before becoming pregnant. Neutrophils are the first wave of immune system defense against uterine contamination. Neutrophil function seems...
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Alfred R. Menino, Jr
Incidences of uterine infections in dairycattle are high between
