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Artificial Insemination Sires Differ in Semen Fertility |
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Author: Rogers |
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State: TN Year: 2003 |
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Excerpt: Despite the best efforts of breeding companies, semen from AI sires does vary somewhat in fertility. This variability is predictable over time & poor fertility AI sires identified from past data will more likely have poor fertility in the future.
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Breakthroughs In Biotechnology |
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Author: Seidel |
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State: CO Year: 1996 |
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Excerpt: Research equips producers with an array of genetic improvement tools. A discussion of various biotechnologies (ET, In vitro fertilization, sexing embryos, bisection of embryos, cloning) - including their benefits & drawbacks.
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Breeding for increased angularity & reduced body condition is a mistake |
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Author: Rogers |
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State: TN Year: 2002 |
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Excerpt: Sires with daughters that have higher body condition scores also have daughters with fewer days to first service, higher first service conception rates & shorter calving intervals.
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Crossbreeding Research - research papers & articles posted by Genus Breeding (part of ABS Global) |
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Author: none specified |
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State: UK Year: 2006 |
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Excerpt: Over recent years crossbreeding has grown in popularity as farmers look to increase fertility & survival & maximise the benefits that can be gained through hybrid vigour. List of useful research papers that are a must read for anyone considering…
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Daughter pregnancy rate evaluation of cow fertility. |
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Author: VanRaden, Sanders, Tooker, Miller, Norman |
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State: US Year: 2002 |
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Excerpt: AIPL will provide genetic evaluations for daughter pregnancy rate (DPR) on bulls & cows. DPR will be made available routinely as part of the USDA-DHIA genetic evaluation results beginning in February 2003.
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Genetic Evaluation of Cow Fertility expressed as Pregnancy Rate (PowerPoint (*.ppt) presentation) |
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Author: VanRaden, Sanders, Tooker, Miller, Norman |
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State: US Year: 2002 |
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Excerpt: Daughter Pregnancy Rate has low heritability (~4%) but high genetic correlation with Productive Life (>.5). Selection on PL has greatly reduced the decline in cow fertility.
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Genus Breeding is part of ABS Global |
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Author: none specified |
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State: Global Year: 2008 |
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Excerpt: Genus Breeding is part of the world's leading provider of bovine genetics & reproduction services, marketing in 70+ countries around the globe. Also offers forage, nutrition, foot & udder care products. Beef & dairy farms' potential is maximized…
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New Genetic Evaluations Consider the Cow's Contribution to Calving Ease |
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Author: Weigel |
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State: US Year: 2002 |
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Excerpt: "Service sire calving ease" (renamed) measuring a bull's tendency to sire calves that are born easily, is now adjusted for the influence of his mates. "Daughter calving ease", measures the influence of the sire of the cow on calving ease.
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The profitable choice - Svensk Avel is the dominate breeding company in Sweden |
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Author: Svensk Avel |
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State: Swedeb Year: 2008 |
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Excerpt: The Swedish breeding program has been focused on combining production with cost reducing traits such as female fertility, calvings & udder health for more than 30 years. Svensk Avel keeps 1000 bulls at 2 bull stations & is part of a nucleus herd.
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