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Carcass quality of crossbred lambs expressing the callipyge phenotype born to Romanov purebred and crossbred ewes

Published online by Cambridge University Press:  18 August 2016

M. H. Fahmy ,
C. Gariepy  and
J. Fortin
M. H. Fahmy
Affiliation:
Dairy and Swine Research and Development Centre, Agriculture and Agri-Food Canada, PO Box 90, Lennoxville, Canada JIM 1Z3
C. Gariepy
Affiliation:
Food Research and Development Centre, Agriculture and Agri-Food Canada, 3600Casavant Blvd. West, Saint Hyacinthe J2S 8E3, Quebec, Canada
J. Fortin
Affiliation:
Food Research and Development Centre, Agriculture and Agri-Food Canada, 3600Casavant Blvd. West, Saint Hyacinthe J2S 8E3, Quebec, Canada
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Abstract

Carcass quality was evaluated in 35 male and 41 female lambs, 38 expressing the callipyge phenotype (Cg) and 38 controls expressing the normal phenotype (N). Lambs were from Romanov and Suffolk × Romanov ewes mated to two rams heterozygous for the callipyge locus and slaughtered at approximately 44 kg live weight. The Cg lambs reached slaughter weight at 163 days of age, 13 days younger, and had a dressing proportion 0·524 , 0·029 points higher. Also they had more leg (341 v. 308 g/kg), less loin (315 v. 328 g/kg) and less shoulder (340 v. 360 g/kg) than the N lambs. The leg, loin and shoulder wholesale cuts and half the carcass of Cg lambs had 81, 113, 77, and 92 g/kg more lean and 52, 98, 59, and 72 g/kg less fat than N lambs, respectively. The Cg lambs also had larger loin-eye area (18·5 v.13·1 cm2), less backfat at the C (4·1 v. 6·1 mm) and at the GR locations (11·0 v. 15·2 mm) and less internal fat (202 v. 339 g) than the N lambs. Dissection of the 12th rib indicated that Cg lambs had more muscle (574 v. 462 g/kg), less fat (276 v. 358 g/kg) (both P < 0·001) and similar (V > 0·05) bone (155 v. 265 g/kg) to N lambs. Colour of the longissimus muscle was significantly paler in Cg lambs. Intramuscular fat and dry matter of longissimus muscle were significantly lower (49 v. 120 and 247 v. 253 g/kg) in Cg than in N lambs. Cg lambs were significantly different (P < 0·05) from N lambs for all traits studied except age at slaughter, tissues at the GR location, proportion of bone in the 12th rib and the L* colour of the longissimus muscle. Breed type effect was significant only for age at slaughter, whereas the effect of sex was significant for all traits except for proportion of lean in the leg, b* colour and intramuscular fat content of the longissimus muscle. No interactions were significant except phenotype × breed type on fat thickness over the longissimus muscle. Post-mortem ageing of the longissimus muscle for 9 or 15 days caused a significant reduction in muscle toughness in Cg lambs compared with those aged for 3 days (113 v. 98 Newtons) but the muscle was still tougher than that from N lambs (with a shear force of 64 and 51 Newtons at 3 and 9 or 15 days post mortem). The principle component analysis including carcass conformation and composition traits as well as meat quality traits was indicative of a distinctly different carcass ofCg compared with N lambs. The first two principal components explained 0·70 of the total variation.

Keywords

callipyge genecarcass compositionmeat qualityRomanov
Type
Research Article
Information
Animal Science , Volume 69 , Issue 3 , December 1999 , pp. 525 - 533
Copyright
Copyright © British Society of Animal Science 1999

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References

Busboom, J. R., Hendrix, W. F., Gaskins, C. T., Cronrath, J. D., Jeremiah, L. E. and Gibson, L. L. 1994. Cutability, fatty acid profiles and palatability of callipyge and normal lambs. Journal of Animal Science 72: (suppl. 1) 60 (abstr.).Google Scholar
Busboom, J. R., Leckie, R. K., Silvestri, A. O., Rathje, N. M., Kuber, P. S., Meyer, H. H., Duckett, S. K. and Snowder, G. D. 1997. Effect of long term postmortem aging on tenderness of callipyge and normal lamb. Journal of Animal Science 75: (suppl. 1) 177 (abstr.).Google Scholar
Busboom, J. R., Snowder, G. D. and Cockett, N. E. 1996. Synopsis of the heavy muscled (callipyge) lamb symposium, 15-16 February, 1996, Salt Lake City, Utah, mimeograph.Google Scholar
Cain, T. L., Jackson, S. P., Miller, M. F., Elliott, C. T. and Ramsey, C. B. 1996. Improving tendernesss of normal and callipyge lambs with calcium chloride. Journal of Animal Science 74: (suppl. 1) 160 (abstr.).Google Scholar
Carpenter, C. E., Rice, O. D., Cockett, N. E. and Snowder, G.D. 1996. Histology and composition of muscles from normal and callipyge lambs. Journal of Animal Science 74: 388–393.Google Scholar
Clare, T. L., Jackson, S. P., Miller, M. F., Elliott, C. T. and Ramsey, C. B. 1997. Improving tenderness of normal and callipyge lambs with calcium chloride. Journal of Animal Science 75: 377–385.Google Scholar
Commission Internationale de ľEclairage. 1976. Commission Internationale de ľEclairage, 18th session, London, England, September 1975. CIE publication no. 36.Google Scholar
Duckett, S. K. 1996. Rate of postmortem tenderization in normal and callipyge lamb. Journal of Animal Science 74: (suppl. 1) 164 (abstr.).Google Scholar
Duckett, S. K., Leckie, K., Klein, T. A., Busboom, J. R. and Snowder, G. D. 1997. Effect of freezing on calpastatin activity and tenderness of callipyge lamb. Journal of Animal Science 75: (suppl. 1) 112 (abstr.).Google Scholar
Fahmy, M. H., Boucher, J. M., Poste, L. M., Grégoire, R., Butler, G. and Comeau, J. E. 1992. Feed efficiency, carcass characteristics, and sensory quality of lambs, with or without prolific ancestry, fed diets with different protein supplements. Journal of Animal Science 70: 1365–1374.Google Scholar
Fernandez, J. Mv King, K. S., White, T. W., Bidner, T. D., Franke, D. E., Hoover, D. T., Gentry, L. R., Higbie, A. D. and Lupton, C. J. 1996. Performance of FI Rambouillet × Gulf Coast Native lambs with and without the callipyge gene: feedlot phase. Journal of Animal Science 74: (suppl. 1) 260 (abstr.).Google Scholar
Field, R. A., Kucuk, O., Hinds, F. C., Riley, M. L., Russell, W. C. and Snowder, G. D. 1997. Carcass characteristics of extremely heavy lambs expressing the callipyge gene. Journal of Animal Science 75: (suppl. 1) 112 (abstr.).Google Scholar
Frey, D. F. and Piementel, R. A. 1978. Principle component analysis and factor analysis. In Quantitative ethology (ed. Colgan, P. W.), pp. 219–246. John Wiley, New York.Google Scholar
Jackson, S. P., Green, R. D. and Miller, M. F. 1997a. Phenotypic characterization of Rambouillet sheep expressing the callipyge gene. I. Inheritance of the condition and production characteristics. Journal of Animal Science 75: 14–18.Google Scholar
Jackson, S. P., Miller, M. F. and Green, R. D. 1997b. Phenotypic characterization of Rambouillet sheep expressing the callipyge gene. II. Carcass characteristics and retail yield. Journal of Animal Science 75: 125–132.Google Scholar
Koohmaraie, M., Shackelford, S. D., Wheeler, T. L., Lorengan, S. M. and Doumit, M. E. 1995. A muscle hypertrophy condition in lamb (callipyge): characterization of effects on muscle growth and meat quality traits. Journal of Animal Science 73: 3596–3607.Google Scholar
Kucuk, O., Hinds, F. C., Brown, D. R. and Snowder, G. D. 1996. Influence of dietary crude protein levels on the performance by normal and callipyge lambs. Journal of Animal Science 74: (suppl. 1) 276 (abstr.).Google Scholar
Lorenzen, C. L., Fiorotto, M. L., Freetly, H. C., Shackelford, S. D., Wheeler, T. L., Savell, J. W. and Koohmaraie, M. 1997. Muscle protein synthesis and protein degradation play a role in callipyge-induced muscle hypertrophy. Journal of Animal Science 75: (suppl. 1) 177 (abstr.).Google Scholar
Rawlings, D. M., Cockett, N., Mendenhall, V. T. and Snowder, G. D. 1994. Quality characteristics of cooked lamb from callipyge animals and normal half-siblings. Journal of Animal Science 72: (suppl. 1) 61 (abstr.).Google Scholar
Ricordeau, G., Tchamitchian, L. and Poivey, J. P. 1988. Performance, development and use of Romanov in France. Journal of Agriculture Science in Finland 60: 558–566.Google Scholar
Ricordeau, G., Timonier, J., Poivey, J. P., Driancourt, M. A., Houchereau-de-Reviers, M. T. and Tchamitchian, L. 1990. I.N.R.A. research on the Romanov breed in France: a review. Livestock Production Science 24: 305–332.Google Scholar
Sainz, R. D., Espendola, M. S., Cubbage, J. S. and Lee, Y.B. 1997. Freezing improves myofibril fragmentation in longissimus muscles from callipyge lambs. Journal of Animal Science 75: (suppl. 1) 113 (abstr.).Google Scholar
Snowder, G. D., Busboom, J. R., Cockett, N. E., Hendrix, F. and Mendenhall, V. T. 1994. Effect of the callipyge gene on lamb growth and carcass characteristics. Proceedings of the fifth world congress on genetics applied to livestock production, Guelph, vol. 18, pp. 51–54.Google Scholar
Statistical Analysis Systems Institute. 1985. SAS user’s guide, statistics. SAS Institute Incorporated, Cary, NC.Google Scholar