200 6 H. Duane Norman H. Duane Norman Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD dnorman @aipl.arsusda.gov Prospects for Increasing Prospects for Increasing Profitability Using Profitability Using Genetic Reproductive Genetic Reproductive Indexes Indexes
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Prospects for Increasing Profitability Using Genetic Reproductive Indexes
Prospects for Increasing Profitability Using Genetic Reproductive Indexes. 1. Phenotypic trend in days open. Lactation. 2. 3. 4. 5. Two tall tales:. 1. Reproduction is only a management issue 2. Genetics can not help solve fertility problems. Reproductive evaluations. - PowerPoint PPT Presentation
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2006
H. Duane NormanH. Duane Norman
Animal Improvement Programs LaboratoryAgricultural Research Service, USDA, Beltsville, [email protected]
Prospects for Increasing Prospects for Increasing Profitability Using Genetic Profitability Using Genetic
Interpretation for fertility: Interpretation for fertility:
1. These better bulls’ daughters are not only over $100 more profitable as shown in Net Merit but will give better fertility as well. Their DPR of +2.3 means their daughters will have 9.2 fewer days open than other cows in the typical herd.
2. Genetics can help solve fertility problems. The 16 day decline in days open from genetics can be recovered with genetic selection.