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Timely Topic Archive
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Minimizing Calving Difficulty
The Beef Improvement Federation offers these strategies for easing calving problems.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Oct-22-03
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Impact of Milk Production Potential on Forage Dry Matter Intake During Late Gestation, and Early and Late Lactation
Researchers at Oklahoma State Univ. investigated the influence of milk production potential on forage dry matter intake (DMI) of Brangus cows during late gestation (avg. 48 days prepartum), early lactation (avg. 60 days postpartum), and late lactation (avg. 162 days postpartum).
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Nov-06-03
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Heifers Sired by Bulls With Balanced EPDs Reached Reproductive Competency Earlier than Those Sired by High Growth or Large Scrotal Circumferences Bulls
In a study by New Mexico and Missouri researchers, Brangus heifers sired by bulls with differing EPDs for growth and scrotal circumference were evaluated.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Nov-20-03
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Selection Against Residual Feed Intake May Reduce Cost of Production in the Breeding Herd
Residual feed intake (RFI) is defined as actual feed intake minus expected feed intake. Recent research has shown that growing/finishing cattle having a lower RFI.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Dec-01-03
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Controlling the Genetic Antagonism Between Birth Weight and Postnatal Growth
In 1988, USDA scientists at the Miles City, MT station allotted a composite population of cows to two selection lines.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Dec-12-03
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Genetic Parameters for Calving Difficulty in Charolais Cattle
Scientists at the National Genetic Research Institute in France compared two statistical models, fixed threshold (FT) and fixed linear (FL) to estimate genetic parameters for calving difficulty.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Dec-16-03
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Differences in Milk EPD Were Reflective of Differences In Weaning Weight EPD
A large five-state, five-year study was conducted to validate the hypothesis that milk EPD truly reflects differences in weaning weight due to milk.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Dec-23-03
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Recent U.S. MARC Results Indicate Changing Trends in Breed Differences
At the 2003 Texas A & M University Shortcourse, Dr. Larry Cundiff reviewed preliminary results of Cycles VII and VIII of the Germ Plasm Evaluation (GPE) program at U.S. MARC.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Jan-12-04
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New Growth Factor May Enhance Beef Cattle Efficiency
Alberta researchers recently isolated and cloned a DNA sequence that encodes a 53-amino acid protein, bovine epidermal growth factor (EPG).
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Feb-06-04
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A Leptin Gene Polymorphism Was Associated With Increased Marbling
Canadian scientists recently reported a polymorphism in the leptin gene of cattle that is associated with a change in body composition, most notably an increase in marbling.
Author: Dr. Rick Rasby, Professor of Animal Science
Date published: Feb-09-04
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