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Improving resistance of cattle to BRD through genomics

Published online by Cambridge University Press:  08 March 2021

Kristen L. Parker Gaddis Open the ORCID record for Kristen L. Parker Gaddis [Opens in a new window]
Kristen L. Parker Gaddis*
Affiliation:
Council on Dairy Cattle Breeding, 4201 Northview Drive, One Town Centre, Suite 302, Bowie, MD20716, USA
*
Author for correspondence: Kristen L. Parker Gaddis, Council on Dairy Cattle Breeding, 4201 Northview Drive, One Town Centre, Suite 302, Bowie, MD20716, USA. E-mail: kristen.gaddis@uscdcb.com
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Abstract

Bovine respiratory disease (BRD) is of considerable economic importance to the dairy industry, specifically among young animals. Several studies have demonstrated that BRD has a significant genetic component, with heritabilities ranging from 0.04 up to 0.22, which could be utilized to select more resistant animals. Taking advantage of available genomic data will allow more accurate genetic predictions to be made earlier in an animal's life. The availability of genomic data does not negate the necessity of quality phenotypes, in this case, records of BRD incidence. Evidence has shown that genetic selection is possible through the use of producer-recorded health information. The national dairy cooperator database currently has minimal records on respiratory problems. There is an existing pipeline for these data to flow from events recorded by producers on the farm to the national database used for genetic evaluation. Additional data could also be collected through the expansion of currently utilized termination codes and used in conjunction with the records of direct health events. Selection for animals with improved BRD resistance is possible at the national level; however, collection of additional phenotypes remains a significant hurdle.

Keywords

Bovine respiratory diseasedairygenomic selectionhealth
Type
Special issue: Papers from Bovine Respiratory Disease Symposium
Information
Animal Health Research Reviews , Volume 21 , Issue 2 , December 2020 , pp. 184 - 187
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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