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Timely Topic Archive
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Use of DNA Tests in Beef Cattle Selection
Dr. Wade Shafer, American Simmental Assoc., recently presented an interesting paper at the Animal Science Annual Meeting on the use of DNA technology in genetic selection.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Oct-11-05
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Selection for High Marbling or High Retail Product Yield Did Not Affect Reproduction Traits in First-Calf Heifers
The objective of this Montana State Univ. study was to evaluate the impact of selection for high marbling or high retail product yield on reproduction traits and calf performance of first-calf heifers in a herd of western range cattle.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Oct-20-05
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Selection for High Marbling or High Retail Product Yield Did Not Affect Reproduction Traits in First-Calf Heifers
The objective of this Montana State Univ. study was to evaluate the impact of selection for high marbling or high retail product yield on reproduction traits and calf performance of first-calf heifers in a herd of western range cattle.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Feb-10-06
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Use of DNA Tests in Beef Cattle Selection
Dr. Wade Shafer, American Simmental Assoc., recently presented an interesting paper at the Animal Science Annual Meeting on the use of DNA technology in genetic selection.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Feb-13-06
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Direct Selection for An Economically Relevant Trait Versus Selection for an Indicator Trait
A paper by Dr. Dorian Garrick at the 2005 Animal Science Annual Meeting pointed out that some traits for which EPDs are available (e.g., calving ease and marbling score) are economically relevant traits (ERTs) that directly affect income or expenses.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Feb-20-06
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Profitability of Calves Sired by Terminal Versus Maternal Breeds of Bulls
Colorado State Univ. scientists used 80 steer progeny produced by mating British cross females to one of three terminal sires (Charolais) or one of five maternal sires (three Angus and two Red Angus-Composites) to compare the effects of sire type (terminal vs. maternal) on performance, carcass traits, and profitability.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Mar-22-06
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Selection for Increased Milk Production May be Antagonistic to Udder Quality
The expected progeny difference (EPD) for maternal weaning wt. (sometimes referred to as “milk” EPD) is calculated from the preweaning gain of calves.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: May-02-06
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Factors Affecting Sale Price of Calves
At the recent American Society of Animal Science meetings, Dr. Tom Troxel of the University of Arkansas presented information about factors that affect sale price of Arkansas beef calves
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Jul-18-06
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Effects of Calpastatin and Calpain Genes on Beef Tenderness
Previous research has shown that two enzymes are responsible for the postmortem meat tenderization process: calpain which promotes tenderness, and calpastatin which inhibits calpain and is therefore associated with meat toughness.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Oct-03-06
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Factors Affecting the Sale Price of Pregnant Heifers
Univ. of Georgia researchers analyzed data from the Georgia Heifer Evaluation and Reproductive Development Program (HERD).
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Oct-06-06
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