Reproductive Management

Transition heat stress

Heat stress on dairy cows is always a concern. It can be extra discomforting to cows “in transition” during those three or so weeks ahead of calving. FULL STORY »

Reproduction analysis: Can you afford to skip it?

“If you don’t know where you’re going, any road will get you there.” That statement has clear application in any business and shows the management team if they are moving towards or away from their goals. FULL STORY »

Still manually tracking cows in synch programs?

If you still manage your herd’s dairy records by hand, be aware that computers can make your job easier. FULL STORY »

Resistance to heat stress is under genetic control

One of the major factors limiting optimal production and profitability in Florida is heat stress. During the summer, cows experience declines in milk yield of 15 to 20 percent and reduction in conception rate to values as low as 10 percent. Recent research supported by the Southeast Milk Inc. Dairy Checkoff Program indicates that a cow’s ability to regulate its body temperature and prevent the negative effects of heat stress on cow function is determined in part by its genetics. What that means is that it should be possible to select cows genetically that are more resistance to the effects of heat stress. FULL STORY »

Analyze the economics of your dairy’s reproductive program

Quickly, what is the cost-benefit of improving your 21-day pregnancy rate from 15 percent to 20 percent? Not many farmers can accurately answer that off the top of their head. But that information can be critical to your profitability. To help calculate the right response for your farm, check out the “Dairy Reproductive Economic Analysis” tool from the University of Wisconsin, Madison. FULL STORY »

Reducing follicle dominance in timed AI programs

Recent research evaluated the effects of the period of follicle dominance in a timed-artificial insemination (AI) protocol and its effect on conception rate in 4,098 dairy cows. FULL STORY »

Adjustments to all cow PTA's coming next month

Beginning with the April 2011 genetic evaluations, USDA-AIPL will adjust the PTAs on all Holstein, Jersey and Brown Swiss cows, whether genomic tested or not, to make all evaluations more directly comparable. FULL STORY »

Johne’s disease has a negative influence on reproduction

The effect of Mycobacterium avium ssp. paratuberculosis (MAP) on dairy reproduction and culling is among the least documented cost attributed to this infection. Research published in the August 2010 Journal of Dairy Science offers some insight to this influence. FULL STORY »

Wanted: Nominations for herds with excellent reproduction

The Dairy Cattle Reproduction Council (DCRC) is looking to recognize dairy producers through its Reproduction Award Program for accomplishing reproductive efficiency with well-implemented management procedures. FULL STORY »

Genetic progress forges ahead

The modern dairy cow is a remarkable feat of genetic progress. Check out this podcast for more of University of Wisconsin Extension Dairy Geneticist Kent Weigel’s perspective on how dairy genetics work on the farm, new genetic technologies and what the genetic future holds. FULL STORY »

Wanted: High-producing, healthy fresh cows with excellent reproduction

If ever a dairy producer were to post a “wanted” poster for the ideal dairy cow, she would produce large volumes of high-quality milk, remain healthy through the most trying time of her life—the transition period—and be able to be bred back in a timely manner. However, these three factors—production, reproduction and transition—often translate to conflicting performance in the fresh pen, which has direct and defined implications on future reproductive performance. FULL STORY »

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