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Genetic relationships between Pulmonary Arterial Pressure and Performance Traits in Colorado State University Beef Improvement Center Angus herd

Friday, August 22, 2014
Posters (The Westin Bayshore)
Natalie F. Berge , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Scott E. Speidel , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Xi Zeng , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Miranda M. Culbertson , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Milton G. Thomas , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Richard Mark Enns , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Abstract Text:  Risk of high altitude disease (HAD), commonly named “Brisket Disease”, can be measured with pulmonary arterial pressure (PAP). The objective of this study was to determine how PAP is associated with performance traits for future selection purposes within the Colorado State University Beef Improvement Center (CSU-BIC) Angus herd. Performance traits included: yearling weight (n=4,733) and post-weaning gain (n=4,440).  Univariate and bivariate analyses were conducted with ASREML on PAP (n=5,122) and each performance trait to estimate heritabilities and genetic correlations. Heritabilities appeared to be within their respective typical range. Genetic correlations between PAP and yearling weight direct, yearling weight maternal, and post-weaning gain were 0.02 ± 0.11, 0.04 ± 0.14, 0.15 ± 0.10, respectively. Results of this study suggest that selection on PAP appears to have minimal influence on the growth performance of cattle at the CSU-BIC.

Keywords:

Beef Cattle

Pulmonary Arterial Pressure

Yearling Weight

See more of: Posters: Adaptation and Selection in Harsh Environments (Group 2)
See more of: Genetic Improvement Programs: Selection for harsh environments and management of animal genetic resources
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