Changes in Reproductive Performance in Dairy Herds Using the Herd Reproductive Status System

Nutrition, Metabolic Status and Reproductive Efficiency in Dairy Herds

Nutrition of transition period in dairy cows dramatically increases requirements for energy, glucose, amino acids and other nutrients in dairy cows and, parallel to that, feed intake is depressed. An insufficient or imbalanced nutrient intake might lead to the malfunction of organs, causing reproductive failure. To minimize the metabolic/reproductive damage caused by negative energy balance (NE...

The Evaluation of Reproductive Performance in Dairy Herds

The routine monitoring of the efficiency of reproductive programs is necessary in large-scale dairy herds in the 21 century. The importance of the economic evaluation of these programs is increasing, as well, since many thousands of euros are spent on reproductive management on a farm. However, different interpretations of reproductive indices cause difficulties among professionals when compari...

Reproductive performance of repeat breeders in dairy herds.

The objectives were to characterize repeat breeding in dairy cows, including reproductive performance and risk factors. Data from 613 Holstein Friesian cows in nine dairy herds across Japan were enrolled. A repeat breeder was defined as a cow that did not become pregnant after three inseminations, despite no clinically detectable reproductive disorders. In contrast, cows that became pregnant wi...

Management Strategies to Optimize Reproductive Performance of Dairy Herds

Arginase status in bull reproductive system