Genetics

Does genomic selection intensify inbreeding or help control it?

Inbreeding management can be easier with a program approach that utilizes genomic insights. FULL STORY »

Researchers study nutrition's role in genetic potential

A new study shows how nutrition affects genetic expression for milk, fat and protein yields. FULL STORY »

Genetic parameters: assessing several traits

A study completed by the University of Czech Republic estimated the genetic parameters for fertility traits and linear type traits in Holstein cows. FULL STORY »

Economics of the 3K SNP genomic test for calves

The University of Florida takes a look at some ideas and the economic value on the use of the 3K SNP genomic test for calves on dairy farms. FULL STORY »

Time to review sire selection criteria

Updated genetic evaluations for dairy cattle were released in early April, 2011. Now is the time to review selection criteria for service sires. 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 »

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 »

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 »

Track difficult calvings to gain profit

Data that reveal the expected calving difficulty for specific bulls within breeds can generate huge cost savings in the long run for all producers in the industry, say experts at the University of Minnesota. Therefore, they say, if you get a handle on your herd's calving difficulty, you can make decisions that reduce financial loss. FULL STORY »

Finding a cow's inner dairyness

Much of the industry’s excitement about genomic screening has focused on having a new way to spot the same traits measured by progeny testing—like a cow’s potential for producing milk, butterfat and protein. But genomics promises a much richer lode of data, such as genetic predisposition to infertility, or resistance to disease, or how efficiently a cow converts feed into milk. FULL STORY »

Crossbreeding leads heifers to milking string faster

Research presented at the American Dairy Science Association meeting this past July compared the performance of the following crossbreds against Holstein heifers. FULL STORY »

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Comprima V 150 XC T and Comprima V 180 XC T round balers

Krone North America introduces the Comprima V 150 XC T (4’ x 39” – 59”) and Comprima V 180 XC ... Read More

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