Abstract

 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.

Natalie F Berge, Scott E Speidel, Xi Zeng, Miranda M Culbertson, Milton G Thomas, Richard Mark Enns

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume Genetic Improvement Programs: Selection for harsh environments and management of animal genetic resources (Posters), , 430, 2014
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