References

1. Dziuk, P.J.; Bellows, R.A. Management of reproduction of beef cattle, sheep and pigs. J. Anim. Sci. 1983, 57 (Suppl. 2), 355 379.

2. Thomas, V.M. Beef Cattle Production, An Integrated Approach; Waveland Press, Inc.: Prospect Heights, IL, 1992; 270.

3. Field, T.G.; Taylor, R.E. Beef Production and Management Decisions, 4th Ed.; Prentice Hall: Upper Saddle River, NJ, 2002; 714.

4. Guidelines for Uniform Beef Improvement Programs. Beef Improvement Federation, 8th Ed.; University of Georgia: Athens, GA, 2002; 65.

5. National Research Council. Nutrient Requirements of Beef Cattle, 7th Ed.; National Academy Press: Washington, DC, 1996; 46.

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