| dc.contributor.author | Celestino, Elfren | |
| dc.description.abstract | Beef cattle temperament is not only important to handler safety and animal welfare but also found to be related to productivity and thereby, considered an economically important trait. Constraints to improve cattle temperament are due to the inherent complexity of this trait and difficulty in measurement. Our findings suggest that traditional subjective methods (DS; docility score and TS; temperament score) of beef cattle temperament evaluation has less effect in genetic merit predictions (heritability estimates and estimated breeding value ranking) provided that evaluator is included in the model. Our novel movement-based objective method (four-platform standing scale, FPSS) using standard deviation of FPSS data (SSD) and coefficient of variation of SSD (CVSSD) can be use in place of DS and TS, but more appropriately with TS which had higher association based on genetic correlation analysis. Calf temperament had significant effect on adjusted birth weight (ABW), adjusted 205 weaning weight (205-d WW), weaning average daily gain (ADG), and weight gain (WG) where there is an increased ABW, 205-d WW, ADG, and WG with calmer temperament calves. Based on genetic correlation, ABW, 205-d WW, ADG, and WG may not be associated with calf temperament due to low correlations to majority of our models. Lastly, we found significant association between dam temperament and calf 205-d WW, ADG, and WG where dam with calmer temperament had increased calf 205-d WW, ADG, and WG. | en_US |
| dc.publisher | North Dakota State University | en_US |
| dc.rights | NDSU policy 190.6.2 | en_US |
| dc.title | Genetic Predictions Using Subjective Methods of Beef Cattle Temperament Evaluation, Genetic Association Between Beef Cattle Temperament and Production Traits, and Influence of Sire and Dam Temperament on Calf Performance | en_US |
| dc.type | Dissertation | en_US |
| dc.date.accessioned | 2024-01-12T15:53:05Z | |
| dc.date.available | 2024-01-12T15:53:05Z | |
| dc.date.issued | 2021 | |
| dc.identifier.uri | https://hdl.handle.net/10365/33588 | |
| dc.subject | Beef Cattle Temperament | en_US |
| dc.subject | Four Platform Standing Scale | en_US |
| dc.subject | Genetic Parameter Estimations | en_US |
| dc.subject | Genetic Predictions | en_US |
| dc.subject | Sire and Dam Temperament | en_US |
| dc.rights.uri | https://www.ndsu.edu/fileadmin/policy/190.pdf | en_US |
| ndsu.degree | Doctor of Philosophy (PhD) | en_US |
| ndsu.college | Agriculture, Food Systems and Natural Resources | en_US |
| ndsu.department | Animal Sciences | en_US |
| ndsu.program | Animal Sciences | en_US |
| ndsu.advisor | Hanna, Lauren | |
| ndsu.advisor | Vonnahme, Kimberly | |
