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The effect of breed on the relationship between food composition and the efficiency of protein utilisation in young pigs
Published online by Cambridge University Press: 24 November 2017
Extract
It has been suggested (Kyriazakis and Emmans, 1992a, b) that the material efficiency with which the pig can retain protein (ep), is directly proportional to the energy:protein ratio of the diet (R), so that ep = k.R. This hypothesis accounts for the finding that the rate of protein deposition can sometimes be increased by increasing the energy supply at a constant rate of protein supply.
It is also possible that the constant of proportionality, k, is a genetic variable, although it was proposed, partly for the sake of simplicity, that there would be no genetic effects on the value of k. To test the propositions: (i) that ep is proportional to R, and (ii) that k does not differ between genotypes, an experiment was designed and carried out on two pig breeds which were expected to be very different from each other.
- Type
- Non-Ruminant Nutrition
- Information
- Proceedings of the British Society of Animal Production (1972) , Volume 1993: Winter meeting , March 1993 , pp. 62
- Copyright
- Copyright © The British Society of Animal Production 1993
References
Kyriazakis, I and Emmans, G C (1992a, b). British Journal of Nutrition
68: 603–613, 615-625.CrossRefGoogle Scholar