RELATIONSHIPS BETWEEN BEHAVIORAL MEASURES AND PRODUCTIVITY IN GROWING BEEF CATTLE

摘要: OF THESIS RELATIONSHIPS BETWEEN BEHAVIORAL MEASURES AND PRODUCTIVITY IN GROWING BEEF CATTLE The relationships between behavioral measures, growth performance, and immunocompetence in receiving beef steers were explored three experiments. Specifically, exit velocity (EV) objective chute score (OCS) examined as temperament measures. In experiment 1, no main effects or interactions with degradable intake protein (DIP) measures observed (P ≥ 0.11); however, high OCS had greater gain:feed < 0.10) slow EV higher gain than their counterparts. 2, during week two of social observations, dominance hierarchy rankings dependent on 0.05); also increased antibody responses 0.10). 3, subjective scores positively correlated 0.01) both treatments changed over time 0.10); intake, vaccine titer response, to monensin treatment studies suggest that temperament, measured by OCS, affects performance health related is behavior steers.