031
Phenotypic Analysis of Pulmonary Arterial Pressure and Feed Intake Data in Angus Cattle

Monday, August 18, 2014: 1:45 PM
Cypress Room (The Westin Bayshore)
Ryan J Boldt , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Miranda M Culbertson , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Natalie F. Berge , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Milton G. Thomas , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Timothy N. Holt , Colorado State University, College of Veterinary Medicine and Biomedical Sciences, Fort Collins, CO
Scott E. Speidel , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Richard Mark Enns , Colorado State University, Department of Animal Sciences, Fort Collins, CO
Recorded Presentation (flv)
Abstract Text:

ABSTRACT:  The objective of the study was to determine if a phenotypic relationship exists between pulmonary arterial pressure (PAP) scores and traits used to evaluate feed utilization. We hypothesized there is no evidence that there is a phenotypic correlation between PAP scores and other traits related to feed efficiency. The data included 193 Angus steers sampled for PAP at high elevation and then moved to a lower elevation feedlot where feed intake data was collected. Pearson’s correlations between PAP and metabolic mid weight, rib eye area, back fat, average daily intake, and average daily gain were 0.04, -0.004, 0.12,-0.08, and 0.06, but were not significant. We concluded that selection based on PAP scores will not affect feed utilization indicator traits.                                                                       

Keywords:

Pulmonary Arterial Pressure                                                                      

Feed Utilization                                                                                                          

Beef Cattle

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