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Tag: beef breeding and genetics

Posted on September 3, 2019September 3, 2019

Commercial Replacement Heifer Selection


cows at sunset

   Commercial Replacement

   Heifer Selection  

    Alison Van Eenennaam, UC Davis

    alvaneenennaam@ucdavis.edu

    Darrh Bullock, Univ of Kentucky, dbullock@uky.edu

 

*Click here for printable pdf version.

Summary: Typically only a subset of heifers are replacement candidates due to size (smaller heifers are often …

Posted on September 3, 2019September 3, 2019

The Genetics of Horned, Polled and Scurred Cattle


Horned cattle

  The Genetics of Horned, Polled

   and Scurred Cattle

    Darrh Bullock

    University of Kentucky

    dbullock@uky.edu

 

*Click here for printable pdf version.

Summary: Completely avoiding both horns and scurs in your cowherd is near impossible for most commercial cattle producers. Understanding how …

Posted on September 3, 2019September 3, 2019

Genetic Correlations and Antagonisms


cattle in field   

   Genetic Correlations and Antagonisms

    Megan Rolf

    Oklahoma State University

    mrolf@okstate.edu

 

*Click for printable pdf version.

Summary:  Knowledge of which traits are antagonistic can be utilized to manage the impact of selection decisions on other correlated traits.  However, it is important …

Posted on September 3, 2019September 3, 2019

What is Gene Editing?


row of beef cattle   What is Gene Editing?

    Alison Van Eenennaam

    University of California, Davis

    alvaneenennaam@ucdavis.edu

 

 

*Click here for printable pdf version.

What is gene editing?

Gene editing is a category of new methods that can be used to precisely edit or change the …

Posted on September 3, 2019September 3, 2019

Beef Cattle Economic Selection Indices


Cows in pasture

 

  Beef Cattle Economic Selection Indices

   Bob Weaber

   Kansas State University

   bweaber@ksu.edu

 

*Click here for printable pdf version.

Summary: Selection indices provide a single value, usually reported in dollars, for the selection of breeding stock that optimizes selection on a number …

Posted on September 3, 2019September 3, 2019

EPD Basics and Definitions


Cattle

 EPD Basics and Definitions

  Matthew Spangler

  University of Nebraska, Lincoln

  mspangler2@unl.edu

 

 

*Click here for printable pdf version.

Summary:

EPDs represent the genetic component of an animal’s phenotype that is expected to be passed on to the next generation. Studies have …

Posted on September 3, 2019September 3, 2019

DNA Sample Collection


DNA hair card 

 DNA Sample Collection

  Megan Rolf

  Oklahoma State University

  mrolf@okstate.edu

 

*Click here for printable pdf version.

Summary:

Producers may wish to collect DNA samples on animals for a variety of reasons including parentage testing, quantitative trait testing, testing for genetic defects, …

Posted on September 3, 2019September 3, 2019

Genetic Markers of Bovine Respiratory Disease Complex Susceptibility

beef cattle

   Genetic Markers of Bovine

   Respiratory Disease Complex

   Susceptibility

   The Bovine Respiratory Disease Coordinated

   Agricultural Project Team, www.brdcomplex.org

 

*Click here for printable pdf version.

Summary: Complex diseases such as BRDC involve the influence of many genes and are by definition hard …

Posted on September 3, 2019September 3, 2019

Beef Sire Selection Recommendations


Picture of bull   Beef Sire Selection Recommendations

    Darrh Bullock, University of Kentucky

    dbullock@uky.edu

    Megan Rolf, Oklahoma State University

    mrolf@okstate.edu

 

 

*Click here for printable pdf version.

Summary: Selecting the right bull is critical to the success of a genetic selection program, and should be …

Posted on September 3, 2019September 3, 2019

Genetic Practices to Improve Beef Cattle Reproduction


Picture of cows in field   Genetic Practices to Improve

   Beef Cattle Reproduction

    Darrh Bullock

    University of Kentucky

    dbullock@uky.edu

 

 

*Click here for printable pdf version.

Summary: Reproduction is typically a lowly heritable trait, but there are genetic practices that can help improve reproduction rates.

Introduction

Reproduction …

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This is a national Cooperative Extension resource

This work is supported in part by New Technologies for Agriculture Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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