References

1. CAST. Animal Agriculture and Global Food Supply; Report No. 135, Council Agric. Sci. Tech.: Ames, IA, 1999; 1 92.

2. Shelton, M. Breeding for improvement of meat production in sheep: Preface and overview. Sheep Goat Res. J. 2002, 17 (3), 1 5.

3. Wang, C.T.; Dickerson, G.E. Simulation of life cycle efficiency of lamb and wool production for genetic levels of component traits. J. Anim. Sci. 1991, 69 (11), 4324 4337.

4. Fogarty, N.M. Genetic parameters for live weight, fat and muscle measurements, wool production and reproduction. Anim. Breed. Abstr. 1995, 63 (3), 101 143.

5. Rao, S.; Notter, D.R. Genetic analysis of litter size in targhee suffolk and polypay sheep. J. Anim. Sci. 2000, 78 (8), 2113 2120.

6. Bradford, G.E. Selection for Litter Size. In Genetics of Reproduction in Sheep, 1st Ed.; Land, R.B., Robinson, D.W., Eds.; Butterworths: London, 1985; 3 18.

7. Leymaster, K.A. Breeding for improvement of meat production in sheep: Fundamental aspects of crossbreed ing of sheep Use of breed diversity to improve efficiency of meat production. Sheep Goat Res. J. 2002, 17 (3), 50 59.

8. Simm, G. Selection for Lean Meat Production in Sheep. In Progress in Sheep and Goat Research, 1st Ed.; Speedy, A.W., Ed.; CAB International: Wallingford, UK, 1992; 193 215.

9. Lewis, R.M.; Simm, G. Selection strategies in sire referencing schemes in sheep. Livest. Prod. Sci. 2000, 67 (1 2), 129 141.

10. Simm, G.; Lewis, R.M.; Collins, J.E.; Nieuwhof, G.J. Use of sire referencing schemes to select for improved carcass composition in sheep. J. Anim. Sci. 2001, 79 (E. Suppl.), E255 E259.

Cleon V. Kimberling Geri Parsons

Colorado State University, Fort Collins, Colorado, U.S.A.

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