Date of Award

2016

Publisher

North Dakota State University

Document Type

Thesis

Degree Awarded

Master of Science (MS)

Program

Animal Sciences

Department

Animal Sciences

College

Agriculture, Food Systems and Natural Resources

Faculty Advisor

Hanna, Lauren

Description

To assess the validity of a four-platform standing scale (FPSS) to measure cattle temperament, calves were evaluated at weaning age with an objective four-platform standing scale (FPSS) and subjective methods of docility score, temperament score, and qualitative behavior assessment (QBA). The standard deviation of total weight on FPSS over time (SSD), SSD’s coefficient of variation (CVSSD) and first principal component of QBA attributes (i.e., temperament index; TI) were used as additional measures. The final mixed model included fixed effects of date and sex, and random effect of calf. Estimates of heritability (ℎ") across all traits were 0.141 to 0.439, except for QBA attribute of attentive (ℎ" = 0). Phenotypic correlation (- 0.006 to 0.299) and genetic correlation (-0.309 to 0.643) between FPSS and subjective methods indicated FPSS may provide a valid way to capture temperament, but further verification with more measurements will be necessary due to sample size in this project.

Rights

NDSU policy 190.6.2

Rights Link

https://www.ndsu.edu/fileadmin/policy/190.pdf

Author ORCID Identifier

0000-0002-9110-4168

Handle Identifier

https://hdl.handle.net/10365/27975

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