Evaluation of Overall Reproductive Performance of Dairy Herds

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

Economic aspects of applying reproductive technologies to dairy herds

Reproduction continues to be a critical component to maintain a dairy farm economically viable. For every farm and for every cow, there is an optimum time for pregnancy, which is mostly influenced by level of production, persistency of lactation, and parity. In general, as production decreases, lactation number increases, and persistency of lactation decreases, cows should be bred sooner postpa...

Assessment of Early Postpartum Reproductive Performance in Two High Producing Estonian Dairy Herds

Early postpartum (6 weeks) ovarian activity, hormonal profiles, uterine involution, uterine infections, serum electrolytes, glucose, milk acetoacetate and blood urea nitrogen (BUN) levels were studied in 2 Estonian high producing dairy herd with annual milk production of 7688 (Farm A) and 9425 (Farm B). From each farm 10 cows, with normal calving performance were used. Blood samples for the hor...