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Breeding for Profitability & Longevity in Dairy Cattle |
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Author: Rogers |
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State: TN Year: 2001 |
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Excerpt: Summary: Longevity, health, fitness & husbandry traits are heritable & economically important. Selection for lower SCS & higher udders will reduce mastitis & increase longevity. Selection for improved feet & legs may increase longevity. Etc.
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Commonly Asked Questions Regarding CVM |
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Author: none specified |
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State: US Year: 2001 |
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Excerpt: Complex vertebral malformation (CVM) is a recessively inherited genetic defect that was discovered in 2000 by Danish scientists. CVM is suspected to cause embryonic deaths, abortions, & stillborn calves, some with visible deformities.
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Creative Genetics of California - the leader in crossbred genetics |
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Author: Osmundson |
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State: CA Year: 2006 |
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Excerpt: Crossbreeding trial with 7 farms now published. Select Sires agreement to get semen. With crossbreeding significantly more live calves on average, but in addition, the percentage of involuntary culling of the dairy cows has decreased from 40% to 16%.
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Crossbreeding 101: What Every Producer Should Know |
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Author: Select Sires |
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State: US Year: 2004 |
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Excerpt: Producers that try crossbreeding should use a 3-breed rotation. The breeds used should be competitive & have effective genetic improvement programs. Producers should use the best available bulls from those breeds. Select Sires cannot recommend …
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Crossbreeding Trials in California |
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Author: Heins, Hansen, Seykora |
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State: MN Year: 2006 |
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Excerpt: Crossbreeding Holsteins with Normande, Montbeliarde, Swedish Red, & Norwegian Red A.I. sires resulted in fewer stillborn calves, cows with more calving ease, improved conception rates, fewer days open, & survival compared to pure Holstein…
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CVM is recognized as an undesirable genetic recessive |
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Author: none specified |
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State: US Year: 2002 |
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Excerpt: Animals determined to be carriers will be identified with the code “CV” & those determined not to be carriers will be identified with the code “TV”. A definitive diagnosis of CVM requires a veterinary diagnosis or a DNA test.
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Dairy Crossbreeds - The Rare Breed |
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Author: Murray |
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State: Ontario Year: 2002 |
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Excerpt: Hybrid vigour, also known a heterosis, is a measure of the differences between a crossbred & the averages of its purebred parents. Capitalizing on heterosis to improve fertility & longevity rather than milk production is receiving the most interest…
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Danish Red Breed selction |
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Author: Holm |
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State: Denmark Year: 2006 |
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Excerpt: The Danish Red Dairy Breed (RDM) is a typical modern dairy breed, combining high milk production with superior health traits & good workability traits. RDM is also Denmark’s leading protein breed & among the best breeds in the world for protein genetics.
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Danish Red Breed selection |
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Author: Holm |
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State: Denmark Year: 2006 |
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Excerpt: The Danish Red Dairy Breed (RDM) is a typical modern dairy breed, combining high milk production with superior health traits & good workability traits. It is a cow with strong feet & legs – traits that are necessary in large free stall barns.
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Don’t Fear Genetic Defects like CVM . . . Manage Them! |
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Author: none specified |
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State: US Year: 2001 |
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Excerpt: Keep in mind that CVM is not new (it’s been around & undiscovered for decades), only the DNA test is new. Every animal carries some undesirable genes; we just haven’t found all of them yet. Ideas to limit impact on farm & decrease gene frequency.
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