Browsing Cattlemen's Day by Subject "Optaflexx"

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Browsing Cattlemen's Day by Subject "Optaflexx"

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  • Sisson, E.K.; Hutcheson, J.P.; Yates, D.A.; Johnson, B.J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-08-02)
    Feedlot heifers (1,147) weighing 622 lb were used to evaluate the effects of implant strategy and Optaflexx administration. Implant treatments included Revalor-200 (R200) at arrival, or Revalor-IH at arrival and ...
  • Winterholler, S.J.; Parsons, G.L.; Sissom, E.K.; Hutcheson, J.P.; Swingle, R.S.; Johnson, B.J. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-08-02)
    Two-thousand two-hundred fifty-two yearling steers (690 lb) were used to evaluate the effects of Optaflexx and days on feed on finishing steer performance and carcass characteristics. Treatment groups included serial ...
  • Loe, E.R.; Klopfenstein, T.J.; Erickson, G.E.; Dicke, B.E.; Drouillard, James S. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-08-02)
    Crossbred yearling steers (2,015 head) were fed at a commercial feedyard near Larned, Kansas, to evaluate the effects of feeding Optaflexx™ at 0 or 200 mg ractopamine-HCl per steer daily for the final 29 days on feed. ...
  • Quinn, M.J.; May, M.L.; Drouillard, James S.; Reinhardt, Christopher D.; Depenbusch, Brandon E. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-01-22)
    Beta-adrenergic agonists are commonly used in livestock production to accelerate growth by enhancing lean tissue gain. These compounds repartition nutrients away from fat deposition and toward protein accretion. Generally, ...
  • Walker, D.K.; Higgins, James J.; Johnson, B.J.; Titgemeyer, Evan C. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-08-02)
    An experiment was conducted to evaluate the interaction between steroidal implantation and feeding ractopamine on nitrogen retention, blood metabolites, and messenger RNA (mRNA) expression. Six Holstein steers (initially ...
  • Walker, Charles E.; Drouillard, James S.; Nagaraja, T. G. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-01-22)
    Three experiments were conducted to determine effects of ractopamine-HCl, sold under the trade name Optaflexx, on rumen fermentation. In experiment 1, fermentative gas production was measured in vitro to determine the ...
  • Walker, D.K.; Loe, E.R.; Webb, A.S.; Titgemeyer, Evan C.; Drouillard, James S.; Depenbusch, Brandon E. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-08-02)
    An experiment was conducted to determine the relationship between metabolizable protein supply and feeding Optaflexx™ (ractopamine-HCl) on growth and carcass characteristics of feedlot heifers. Seventy-two crossbred ...
  • Daniel, M.J.; Dikeman, Michael E.; Houser, Terry A.; Unruh, John A.; Jaeger, John R.; Murray, Leigh W. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2009-12-08)
    Beef cows are culled from herds because of reproductive inefficiency, poor performance, old age, or farm downsizing due to high production costs. The National Market Cow and Bull Beef Quality Audit of 1999 reported that ...

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