Content tagged "dairy cattle:genetics"

Dairy Cattle Genetics

Dairy Updated: September 01, 2017

Improvement of dairy herd genetics can affect herd health, longevity, reproductive traits, and many other vital aspects of dairy cattle production. It can...

Exploring the Best Combinations of Genomics, Semen Type, and Culling in Dairy Cattle

Dairy Updated: September 01, 2017

This article is part of our series of original articles on emerging featured topics. Please check here to see other articles in this series.Commercially...

Genética y Genómica: Una Introducción

Dairy Updated: January 15, 2016

La genética es una rama de biología enfocada en la herencia y la variación de los organismos. En términos más simples, la genética se centra en las...

Genetics and Genomics: An Introduction

Dairy Updated: September 01, 2015

 This article is part of our series of original articles on emerging featured topics. Please check here to see other articles in this series.Genetics is a...

Use of SNP for Whole Genome Selection in Cattle, Page 6

Dairy Updated: December 07, 2011

Please check this link first if you are interested in organic or specialty dairy production. SNP technology will not replace current methods of selecting...

Use of SNP for Whole Genome Selection in Cattle, Page 5

Dairy Updated: December 07, 2011

Please check this link first if you are interested in organic or specialty dairy production. The main limitation of SNP selection is having good phenotypic...

Use of SNP for Whole Genome Selection in Cattle, Page 4

Dairy Updated: December 07, 2011

Please check this link first if you are interested in organic or specialty dairy production.There are three practical ways of increasing genetic progress: 1)...

Use of SNP for Whole Genome Selection in Cattle, Page 3

Dairy Updated: December 07, 2011

Please check this link first if you are interested in organic or specialty dairy production.As mentioned earlier, there is a SNP about every 700 base pairs...

Use of Single Nucleotide Polymorphisms for Whole Genome Selection in Cattle

Dairy Updated: December 07, 2011

G.E. Seidel, Jr. Animal Reproduction and Biotechnology Laboratory Colorado State UniversityGenomic selection using SNPs (single nucleotide polymorphisms)...

Use of SNP for Whole Genome Selection in Cattle, Page 2

Dairy Updated: December 07, 2011

Please check this link first if you are interested in organic or specialty dairy production. SNPs occur about every 700 base pairs in Bos taurus and every...

Sire Selection Strategies for Graziers

Dairy Updated: May 10, 2010

Several questions commonly come up among dairy producers who practice management intensive rotational grazing when the topic of sire selection arises: Should...

Sire Evaluations for Health and Fitness Traits

Dairy Updated: May 10, 2010

Dairy producers have selected for higher milk production for many years. Genetic improvement causes an average Holstein cow born in 2003 to produce over...

Net Merit and Its Use in Genetic Improvement Programs

Dairy Updated: May 10, 2010

Improvement of food animal species through genetic selection began long ago, but little genetic progress was made in dairy cattle until four major...

It's Sire Summary Time...Zero In on the Information You Really Need

Dairy Updated: May 10, 2010

It happens around the middle of February, and then again in May and August. Maybe you’ll see bull lists in magazines, or maybe your semen salesmen show up...

Impact of Genetic Selection on Female Fertility

Dairy Updated: May 10, 2010

Prospects for improving female fertility in dairy cattle via genetic selection are reviewed. Today's high-producing cows have shorter estrous cycles, fewer...

Genetic marker technology and its impact on the dairy industry

Dairy Updated: May 06, 2010

Major changes in genetic evaluations of dairy cows don’t come along every day. Producers notice the genetic base changes every five years. We have recently...

Genetic Improvement of Dairy Cow Longevity

Dairy Updated: May 06, 2010

Dairy cow survival is influenced by many factors. Non-genetic factors include stall size, bedding type, degree of overcrowding, heat abatement devices,...

Do Genetics Determine the System, or Does the System Determine The Genetics?

Dairy Updated: May 05, 2010

Genetic improvement programs for dairy cattle are typically carried out on a national or international basis. However, differences in management practices...

Dairy Crossbreeding: Why and How

Dairy Updated: May 05, 2010

There has been some renewed interest in dairy crossbreeding as it offers some important advantages. Learn more about why you should consider crossbreeding...

Dairy Crossbreeding: Results from New Research and Information Still Needed

Dairy Updated: May 05, 2010

Three crossbreeding projects are currently under way with dairy cattle in the United States, while results from a fourth trial using data from commercial...

Dairy Cattle Inbreeding

Dairy Updated: May 04, 2010

The mating of related individuals is called inbreeding. New dairy animals created by AI or natural service inherit a random sampling of the genetic makeup of...

Complete and Accurate Recording of Calving Ease and Stillbirth Data is Key

Dairy Updated: May 03, 2010

Two of the biggest headaches, as well as financial drains, on a modern dairy farm are calving complications and stillborn calves. Heifers and cows that go...

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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.