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Across-Breed Matings: How They Work |
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Author: Hurst |
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State: US Year: 2000 |
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Excerpt: Jersey Journal article about heterosis: " In reality, what you may have thought was hybrid vigor in that first cross might have mostly been the contribution of the Jersey breed on an additive gene basis."
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Concerned About Inbreeding? A Computerized Mating Program might be the Answer! |
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Author: none specified |
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State: WI Year: |
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Excerpt: The first important point is that computerized mating programs can effectively reduce inbreeding in the next generation of replacement heifers…
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Crossbreeding: A Dirty Word or an Opportunity? |
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Author: Weigel |
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State: WI Year: 2007 |
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Excerpt: Crossbreeding research is lacking at present, but projects that will assess breed differences & heterosis for traits of economic importance are underway at 7 land-grant universities. It will take 5 to 10 years to accumulate enough knowledge to predict…
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Dairy Genetic Benchmarks |
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Author: Smith, Chapa, Gilson, Ely |
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State: GA Year: 2002 |
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Excerpt: Evaluating a herd’s genetic benchmarks indicates whether a herd is performing at its genetic potential. If herd genetic values are lower than expected, more detailed analysis must be performed to determine whether genetic or environmental factors are …
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Genetic merit of AI bulls is tied to semen price |
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Author: Cassell |
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State: VA Year: 2003 |
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Excerpt: Just keep in mind that pregnant is good for the cow, but pregnant to a good AI bull is good for the cow & the herd in the years to come.
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How are Milk Components Related? |
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Author: Keown |
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State: NE Year: 2006 |
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Excerpt: Discussion of genetic correlations of yield traits & percentage traits & how to use these relationships in selection & culling programs.
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How Much Does Dairy Sire Semen Really Cost? |
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Author: Keown |
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State: NE Year: 2006 |
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Excerpt: Factors to consider in determining the true cost of dairy sire semen are discussed here. A simple formula to estimate the Semen Value (SV) Indexes of sires given certain herd management conditions.
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How to Set Goals for Your Breeding Program |
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Author: Keown, Kononoff |
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State: NE Year: 2006 |
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Excerpt: How many traits (such as pounds of milk, fat or protein) should you select for? Which traits are the most important? Genetic potential is the key that unlocks the door to efficient production through proper feeding & management
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International genetic evaluation of dairy cattle - Past , Present & Future |
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Author: Emanuelson |
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State: Sweden Year: 2003 |
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Excerpt: International bull evaluations use known relationships between bulls within different countries & relationships between countries to produce estimated breeding values for foreign bulls. The presence of Interbull as an independent, non-profit …
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Is Crossbreeding Right for You? Basics Every Producer Should Know |
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Author: Select Sires |
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State: US Year: 2004 |
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Excerpt: At Select Sires in 2004 started offering semen from premium Swedish Red & Norwegian Red sires, & Montbeliarde sires. Breeds used should be competitive & have effective genetic improvement programs; use the best bulls available from those breeds.
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