The effects of ractopamine-hydrogen chloride (Optaflexx) on performance, carcass characteristics, and meat quality of finishing feedlot heifers

Journal of Animal Science

Volumn 86, Issue 4, 2008, Pages 902-908

  Quinn, M J ^a   Reinhardt, C D ^a   Loe, E R ^a   Depenbusch, B E ^a   Corrigan, M E ^a   May, M L ^a   Drouillard, J S ^a  

^a KANSAS STATE UNIVERSITY   (United States)

Author keywords

Beef cattle; Heifer; Ractopamine hydrogen chloride

Indexed keywords

BETA ADRENERGIC RECEPTOR STIMULATING AGENT; PHENETHYLAMINE DERIVATIVE; RACTOPAMINE;

ANIMAL; ANIMAL FOOD; ARTICLE; BODY COMPOSITION; CATTLE; DRUG EFFECT; FEMALE; GROWTH, DEVELOPMENT AND AGING; MEAT; SKELETAL MUSCLE; STANDARD; TIME; WEIGHT GAIN;

ADRENERGIC BETA-AGONISTS; ANIMAL FEED; ANIMAL NUTRITION PHYSIOLOGY; ANIMALS; BODY COMPOSITION; CATTLE; FEMALE; MEAT; MUSCLE, SKELETAL; PHENETHYLAMINES; TIME FACTORS; WEIGHT GAIN;

BOS; ZEA MAYS;

EID: 42149166222     PISSN: 00218812     EISSN: None     Source Type: Journal    
DOI: 10.2527/jas.2007-0117     Document Type: Article

References (18)

1. Avendano-Reyes, L., V. Torres-Rodriguez, F. J. Meraz-Murillo, C. Perez-Linares, F. Figueroa-Saavedra, and P. H. Robinson. 2006. Effects of two β-adrenergic agonists on finishing performance, carcass characteristics, and meat quality of feedlot steers. J. Anim. Sci. 84:3259-3265.
2. Bridge, K. Y., C. K. Smith, and R. B. Young. 1998. β-Adrenergic receptor gene expression in bovine skeletal muscle cells in culture. J. Anim. Sci. 76:2382-2391.
3. Byrem, T. A., D. H. Beermann, and T. F. Robinson. 1998. The β-agonist cimaterol directly enhances chronic protein accretion in skeletal muscle. J. Anim. Sci. 76:988-998.
4. Fiems, L. O., B. Buts, Ch. V. Boucque, D. I. Demeyer, and B. G. Cottyn. 1990. Effect of a β-agonist on meat quality and myofibrillar protein fragmentation in bulls. Meat Sci. 27:29-39.
5. Geesink, G. H., F. J. M. Smulders, H. L. J. M. van Laack, J. H. van der Kolk, T. Wensing, and H. J. Breukink. 1993. Effects on meat quality of the use of clenbuterol in veal calves. J. Anim. Sci. 71:1161-1170.
6. Gruber, S. L., J. D. Tatum, T. E. Engle, M. A. Mitchell, S. B. Laudert, A. L. Schroeder, and W. J. Platter. 2007. Effects of ractopamine supplementation on growth performance and carcass characteristics of feedlot steers differing in biological type. J. Anim. Sci. 85:1809-1815.
7. Kim, Y. S., R. D. Sainz, R. J. Summers, and P. Molenaar. 1992. Cimaterol reduces β-adrenergic receptor density in rat skeletal muscle. J. Anim. Sci. 70:115-122.
8. Mersmann, H. J. 1998. Overview of the effects of β-adrenergic receptor agonists on animal growth including mechanisms of action. J. Anim. Sci. 76:160-172.
9. Miller, M. F., D. K. Garcia, M. E. Coleman, P. A. Ekeren, D. K. Lunt, K. A. Wagner, M. Procknor, T. H. Welsh Jr., and S. B. Smith. 1988. Adipose tissue, longissimus muscle and anterior pituitary growth and function in clenburerol-fed heifers. J. Anim. Sci. 66:12-20.
10. Olayiwola, A., E. A. Darko, P. He, and L. G. Young. 1990. Manipulation of porcine carcass composition by ractopamine. J. Anim. Sci. 68:3633-3641.
11. Pringle, T. D., C. R. Calkins, M. Koohmaraie, and S. J. Jones. 1993. Effects over time of feeding a β-adrenergic agonist to wether lambs on animal performance, muscle growth, endogenous muscle proteinase activities, and meat tenderness. J. Anim. Sci. 71:636-644.
12. Schiavetta, A. M., M. F. Miller, D. K. Lunt, S. K. Davis, and S. B. Smith. 1990. Adipose tissue cellularity and muscle growth in young steers fed the β-agonist clenbuterol for 50 days and after 78 days of withdrawal. J. Anim. Sci. 68:3614-3623.
13. See, M. T., T. A. Armstrong, and W. C. Weldon. 2004. Effect of a ractopamine feeding program on growth performance and carcass composition in finishing pigs. J. Anim. Sci. 82:2474-2480.
14. Sukhija, P. S., and D. L. Palmquist. 1988. Rapid method for determination of total fatty acid content and composition of feedstuffs and feces. J. Agric. Food Chem. 36:1202-1206.
15. Walker, D. K., E. C. Titgemeyer, J. S. Brouillard, E. R. Loe, B. E. Depenbusch, and A. S. Webb. 2006. Effects of ractopamine and protein source on growth performance and carcass characteristics of feedlot heifers. J. Anim. Sci. 84:2795-2800.
16. Watkins, L. E., D. J. Jones, D. H. Mowrey, D. B. Anderson, and E. L. Veenhuizen. 1990. The effects of various levels of ractopamine hydrochloride on the performance and carcass characteristics of finishing swine. J. Anim. Sci. 68:3588-3595.
17. Wheeler, T. L., and M. Koohmaraie. 1992. Effects of the β-adrenergic agonist L644,969 on muscle protein turnover, endogenous proteinase activities, and meat tenderness in steers. J. Anim. Sci. 70:3035-3043.
18. Winterholler, S. J., G. L. Parsons, C. D. Reinhardt, J. P. Hutcheson, W. T. Nichols, D. A. Yates, R. S. Swingle, and B. J. Johnson. 2007. Response to ractopamine-hydrogen chloride is similar in yearling steers across days on feed. J. Anim. Sci. 85:413-419.