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The evaluation of economically optimal rations for bacon pigs formulated by curve fitting and linear programming techniques

Published online by Cambridge University Press:  02 September 2010

J. B. Dent
Affiliation:
University of Aberdeen
P. R. English
Affiliation:
University of Aberdeen
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Extract

Least cost rations for specific rates of growth in the growing and finishing periods were given to pigs slaughtered at 200 lb. live-weight. During the growing period pigs grew very close to the planned rates in spite of the fact that some food was rejected. Pigs given rations for a low growth rate in the growing period grew slightly faster than planned in the finishing period. In the finishing period pigs given rations for the high growth rate grew on average very near to this rate. The pigs given the ration for the low growth rate grew slightly faster than planned. Food conversion efficiency was for all pigs very near to, or slightly better than, that planned. The rations had no adverse effect on carcass quality.

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1966

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References

REFERENCES

Arscott, G. H., & Brown, W. G., 1961. Studies of least cost rations containing cottonseed meal as affected by lysine supplementation. Feedstuffs, 33 (26): 7476.Google Scholar
Becker, D. E., Jenson, A. H., & Harmon, B. G., 1963. Amino-acid requirements. Feedstuffs, 35(20): 5960.Google Scholar
Bowland, J. P., 1962. Electronic computation of swine rations. Mimeo. Rep. Univ. Alberta, 41st Annual Feeders Day, 1962, pp. 811.Google Scholar
Church, D. C., Brown, W. G., & Ralston, A. T., 1963. Evaluation of cattle fattening rations formulated with linear programming techniques. J. Anim. Sci., 22: 22898.CrossRefGoogle Scholar
De Man, T. J., & Zwiep, I. N., 1955. Aminozuurgeholten in een aantal voedermidderen. Voeding, 16: 16147.Google Scholar
Dent, J. B., 1964. Optimal rations for livestock with special reference to bacon pigs. J. agric. Econ. Soc., XVI: 6887.CrossRefGoogle Scholar
Kuppuswaney, S., Srinivasan, M., & Subrahmanyan, V., 1958. Protein in foods. Publ. Indian Council of Medical Research, Special Report Series, no. 33.Google Scholar
Robinson, D. W., 1964. The plane of nutrition and compensatory growth in pigs. Anim. Prod., 6: 6227.Google Scholar
Robinson, D. W., & Lewis, D., 1964. Protein and energy nutrition of the bacon pig. 2. The effect of varying the protein and energy levels in the diets of ‘finishing’ pigs. J. agric. Sci., 63: 63185.Google Scholar
Robinson, D. W., Morgan, J. T., & Lewis, D., 1964. Protein and energy nutrition of the bacon pig. 1. The effect of varying protein and energy levels in diets of ‘growing’ pigs. J agric. Sci., 62: 62369.CrossRefGoogle Scholar
Wijs, J. J. A., 1958. Methods of analysis of oils and fats. British Standard no. 684: pp. 74–77.Google Scholar