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Darrh Bullock



ASC-211
Expected Progeny Differences: Trait Definitions and Utilizing Percentile Tables
2/7/2014 (new)

 UK Authors: Sean Bessin, Darrh Bullock
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

Expected progeny differences (EPDs) are useful tools in providing the best estimate of the genetic value of a particular animal as a parent. Differences in EPDs between parents of the same breed predict the performance differences of their future offspring if environmental factors are the same. EPD values should not be compared between breeds; for example, you should not compare an Angus bull's weaning weight EPD with a Simmental bull's weaning weight EPD. Most established breeds have EPDs for calving ease, growth, maternal, and carcass traits. When used properly, producers can make genetic improvements to their herd through parental selection. This publication is intended to help producers better understand EPDs and how one might use them in selection of replacement animals.

web only | 3 pages | 1,781 words | 33 downloads | PDF: 370 kb



SR-105
2012 Beef Research and Extension Report
1/7/2014 (new)

 UK Authors: Glen Aiken, Les Anderson, Dar
 Departments: Animal and Food Sciences, Plant and Soil Sciences,
 Series: Special Report (SR series)
 Tags:

The intent of this report is to provide highlights of our research and extension activities. We have a vested interest in the beef industry in the state and nation, and hope this report provides a window into our programs. We believe that after viewing this report, a greater appreciation will be garnered with respect to our involvement in the multiple fields of study related to beef production. The faculty, staff and student activities are advancing our understanding of basic science principles of livestock production as well as applied research that producers and the industry can benefit from immediately, as well as in the future. Extension educational programs, on-farm demonstrations, and other activities aid in transferring this knowledge to producers, allowing for increased awareness and adoption of management change.

web only | 40 pages | 13,658 words | 30 downloads | PDF: 975 kb



SR-104
2010 Research and Extension Beef Report
3/11/2011 (new)

 UK Authors: Les Anderson, Darrh Bullock,
 Departments: Animal and Food Sciences, Plant and Soil Sciences,
 Series: Special Report (SR series)
 Tags:

The 2010 Research and Extension Beef Report highlights advances in understanding of basic scientific principles of livestock production as well as applied research from which producers and the industry can benefit. Extension educational programs, on-farm demonstrations, and other activities help transfer this knowledge to producers so they can adopt of management changes as appropriate.

web only | 89 pages | 56,665 words | 33 downloads | PDF: 2,100 kb



ASC-141
Using Expected Progeny Differences
2/10/2011 (major revision)

 UK Authors: Darrh Bullock
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

One of the most important decisions a cattle operator makes is selecting breeding animals to go into the cattle herd. Basing that decision on the genetic merit of the animal, not just the outward appearance, is critical to the herd's long-term performance.

500 printed copies | 4 pages | 3,008 words | 25 downloads | PDF: 248 kb



ASC-169
Beef Sire Selection Manual
5/28/2010 (major revision)

 UK Authors: Darrh Bullock
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

In principle, genetic improvement is a straight-forward exercise that results from using above-average selection candidates as the parents of the next generation. In practice, the devil is in the details. Both bull breeders and bull buyers need to consider their breeding objectives, defining the list of traits that need to be modified to advance the towards their goal.

5,000 printed copies | 89 pages | - | 67 downloads | PDF: 2,140 kb



ID-108
The Kentucky Beef Book
9/15/2005 (minor revision)

 UK Authors: Jim Akers, Les Anderson, Jose Bi
 Departments: Agricultural Economics, Animal and Food Sciences,
 Series: Interdepartmental (ID series)
 Tags: livestock

10,000 printed copies | - | - | 30 downloads | HTML: 3 kb



ASC-168
Crossbreeding for the Commercial Beef Producer
11/1/2004 (new)

 UK Authors: Les Anderson, Darrh Bullock
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

500 printed copies | 5 pages | - | 65 downloads | PDF: 442 kb



SR-2004-2
2003 Research and Extension Beef Report
6/1/2004 (new)

 UK Authors: Jim Akers, Les Anderson, Darrh
 Departments: Agricultural Economics, Agriculture and Natural Resources,
 Series: Special Report (SR series)
 Tags:

500 printed copies | 43 pages | - | 21 downloads | PDF: 481 kb



ASC-165
Beef Sire Selection Recommendations
12/22/2003 (new)

 UK Authors: Les Anderson, Darrh Bullock,
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

500 printed copies | 2 pages | - | 47 downloads | PDF: 86 kb



ASC-164
Protocols for Synchronizing Estrus in Yearling Heifers
2/1/2003 (reprinted)

 UK Authors: Les Anderson, Darrh Bullock,
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

2,000 printed copies | 4 pages | - | 32 downloads | PDF: 66 kb



ASC-163
Strategies to Improve Reproductive Efficiency of Heifers
2/1/2003 (reprinted)

 UK Authors: Les Anderson, Darrh Bullock,
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

2,000 printed copies | 2 pages | - | 46 downloads | PDF: 23 kb



ASC-162
Managing Body Condition to Improve Reproductive Efficiency in Beef Cows
2/1/2003 (reprinted)

 UK Authors: Les Anderson, Darrh Bullock,
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags: nutrition and health

2,000 printed copies | 6 pages | - | 55 downloads | PDF: 158 kb



ASC-144
Managing Considerations in Beef Heifer Development
2/1/2003 (reprinted)

 UK Authors: Darrh Bullock, Roy Burris, John
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

2,000 printed copies | 4 pages | - | 49 downloads | PDF: 320 kb



PR-463
Beef Research Report-2002
9/30/2002 (new)

 UK Authors: Darrh Bullock
 Departments: Animal and Food Sciences
 Series: Progress Report (PR series)
 Tags:

1,000 printed copies | 54 pages | - | 11 downloads | PDF: 519 kb



ASC-159
Selection and Management Practices to Increase Consistency in Beef Cattle
9/30/2000 (new)

 UK Authors: Darrh Bullock
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags: nutrition and health

5,000 printed copies | 4 pages | - | 61 downloads | PDF: 78 kb



ASC-142
Pelvic Measurements and Calving Difficulty
6/1/2000 (minor revision)

 UK Authors: Les Anderson, Darrh Bullock
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

2,000 printed copies | 3 pages | - | 49 downloads | PDF: 243 kb



PR-417
2000 Kentucky Beef Cattle Research Report
10/1/1999 (new)

 UK Authors: Debra Aaron, Les Anderson, D
 Departments: Animal and Food Sciences, Biosystems and Agricultural Engineering,
 Series: Progress Report (PR series)
 Tags:

700 printed copies | - | - | 2 downloads | HTML: 4 kb



ASC-153
Boar Selection: Using Expected Progeny Differences (EPDs)
7/30/1998 (new)

 UK Authors: Darrh Bullock, Richard Coffey,
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

1,000 printed copies | - | - | - | HTML: 14 kb



ASC-150
Keeping Production Records for the Beef Herd
3/30/1996 (reprinted)

 UK Authors: Darrh Bullock, Kevin Laurent
 Departments: Animal and Food Sciences
 Series: Animal Science (ASC series)
 Tags:

2,000 printed copies | 2 pages | - | 62 downloads | PDF: 145 kb