Skip to main content Accessibility help
×
Home

The effect of beta-adrenergic agonists on carcass and meat quality in sheep

  • P. D. Warriss (a1), S. C. Kestin (a1) and S. N. Brown (a1)

Abstract

Twenty-four crossbred wethers (live weight 27·6 (s.e. 0·36) kg) were divided into three groups and given a concentrate diet. One group was a control, one was given cimaterol (10 mg/kg diet) and one was given clenbuterol (2 mg/kg diet). After 49 days on treatment the animals were fasted for 48 h and slaughtered at a live weight of about 36 kg. The effects of both beta-agonists were similar. Food conversion was proportionately 0·20 better in treated sheep which also produced heavier (18·3 v. 17·0 kg, P < 0·01) carcasses that were leaner. The cross-sectional area of the m. longissimus was increased proportionately by about 0·25 (P < 0·001) and the thickness of subcutaneous fat over the muscle reduced by 0·37 (P < 0·01). The loin joint from treated animals contained proportionately 0·30 more muscle (P < 0·001) and 016 (F > 0·01) less fat. Muscles from treated sheep had higher pHu values (P < 0·01) which resulted in reduced loss of exudate during storage (P < 0·01) and darker colour (P < 0·05). They also contained only about half as much intramuscular fat (13 v. 27 mg/g, P < 0·001) and less haem pigments (2·4 v. 3·9 mg/g, P < 0·001). The results indicate that beta-agonists substantially improve carcass quality but, under certain conditions of pre-slaughter handling, may reduce lean meat quality. The similarity of response to both beta-agonists suggests the observed effects on meat quality may be common to this class of drug.

Copyright

References

Hide All
Allen, P., Tarrant, P. V., Hanrahan, J. P. and Fitzsimons, J. M. 1985. The effect of different levels of Cimaterol on the growth and carcass quality of crossbred lambs. Food Science and Technology Research Report, An Foras Taluntais, pp. 78.
Baker, P. K., Dalrymple, R. H., Ingle, D. L. and Ricks, C. A. 1984. Use of a P-adrenergic agonist to alter muscle and fat deposition in lambs. Journal of Animal Science 59: 12561261.
Beermann, D. H., Fishell, V. K., Hogue, D. E. and Dalrymple, R. H. 1985. Effects of cimaterol (CL 263, 780) and fishmeal on postmortem pH, tenderness and color in lamb skeletal muscle. Journal of Animal Science 61: Suppl. 1, pp. 271272.
Bostian, M. L., Fish, D. L., Webb, N. B. and Arey, J. J. 1985. Automated methods for determination of fat and moisture in meat and poultry products: collaborative study. Journal of the Association of Official Analytical Chemists 68: 876880.
Brown, A. J. and Williams, D. R. 1979. Sheep carcass evaluation — measurement of composition using a standardized butchery method. Memorandum, Meat Research Institute, No. 38.
Chan, T. M. and Exton, J. H. 1976. A rapid method for the determination of glycogen content and radioactivity in small quantities of tissue or isolated hepatocytes. Analytical Biochemistry 71: 96105.
Dalrymple, R. H., Baker, P. K., Doscher, M. E., Ingle, D. L. and Ricks, C. A. 1985. Effect of the repartitioning agent cimaterol (CL 263, 780) on growth and carcass characteristics of lambs. Journal of Animal Science 61: Suppl. 1, pp. 256 (Abstr.).
Duncombe, W. G. 1963. A colorimetric microdetermination of long chain fatty acids. Biochemical Journal 88: 710.
Hamby, P. L., Stouffer, J. R. and Smith, S. B. 1986. Muscle metabolism and real-time ultrasound measurement of muscle and subcutaneous adipose tissue growth in lambs fed diets containing a beta-agonist. Journal of Animal Science 63: 14101417.
Hanrahan, J. P., Fitzsimons, J. M., McEwan, J. C., Allen, P. and Quirke, J. F. 1987. Effects of the beta-agonist Cimaterol on growth, food efficiency and carcass quality in sheep. In Beta-Agonists and Their Effects on Animal Growth and Carcass Quality (ed. Hanrahan, J. P.), pp. 106118. Elsevier Applied Science, London.
Hanrahan, J. P., Quirke, J. F., Bomann, W., Allen, P., McEwan, J. C., Fitzsimons, J. M., Kotzian, J. and Roch, J. F. 1986. p-agonists and their effects on growth and carcass quality. In Recent Advances in Animal Nutrition — 1986 (ed. Haresign, W. and Cole, D. J. A.), pp. 125138. Butterworths, London.
Kim, Y. S., Lee, Y. B. and Dalrymple, R. H. 1987. Effect of repartitioning agent cimaterol on growth, carcass and skeletal muscle characteristics in lambs. Journal of Animal Science 65: 13921399.
Lamming, G. E. and Peters, A. R. 1987. Future developments in the manipulation of growth in farm animals. Veterinary Record 120: 495499.
MacDougall, D. B., Cuthbertson, A. and Smith, R. J. 1969. The assessment of pig meat paleness by reflectance photometry. Animal Production 11: 243246.
MacDougall, D. B. and Rhodes, D. N. 1972. Characteristics of the appearance of meat. III. Studies on the colour of meat from young bulls. Journal of the Science of Food and Agriculture 23: 637647.
McEwan, J. C., Hanrahan, J. P., Fitzsimons, J. M., Tarrant, P. V. and Allen, P. 1985. Effects of the f5-agonist cimaterol on growth, carcass composition and blood metabolites in ram lambs of three breeds. Animal Production Research Report, An Foras Taluntais, pp. 78.
Monin, G. and Gire, P. 1980. Influence of injection of alpha-blocking and beta-blocking agents on the muscle glycogenolysis during transport stress in lambs. Proceedings of the 26th European Meeting of Meat Research Workers, Colorado, paper A-8, pp. 3033.
Noma, A., Okabe, H. and Kita, M. 1973. A new colorimetric micro-determination of free fatty acids in serum. Clinica Chimica Ada 43: 317320.
Sugden, M. C., Sharples, S. C., and Randle, P. J. 1976. Carcass glycogen as a potential source of glucose during short-term starvation. Biochemical Journal 160: 817819.
Tarrant, P. V. 1987. Review: muscle biology and biochemistry. Proceedings of the 33rd International Conference on Meat Science and Technology, Finland, pp. 15.
Thornton, R. F., Tume, R. K., Wynn, P. C., Larsen, T. W. and Johnson, G. W. 1987. Modes of action of repartitioning agents in sheep. Proceedings of the 33rd International Conference on Meat Science and Technology, Finland, pp. 2830.
Warriss, P. D., Brown, S. N., Bevis, E. A., Kestin, S. C., and Young, C. S. 1987. Influence of food withdrawal at various times preslaughter on carcass yield and meat quality in sheep. Journal of the Science of Food and Agriculture 39: 325334.

Related content

Powered by UNSILO

The effect of beta-adrenergic agonists on carcass and meat quality in sheep

  • P. D. Warriss (a1), S. C. Kestin (a1) and S. N. Brown (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.