By William J. A. Payne, R. Trevor Wilson
The 5th variation of this ebook has been thoroughly revised and taken updated, with a brand new co-author. it really is nonetheless the main authoritative and complete ebook at the improvement and construction of family farm animals within the tropics.
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Additional resources for An Introduction to Animal Husbandry in the Tropics
Because protein deposition is described by a Gompertz function (which also becomes zero when the animal attains the mature protein mass), lipid deposition will be controlled. This approach contrasts with that of Ferguson et al. (1994), who explicitly modelled genetically determined protein and lipid depositions using Gompertz functions to predict feed intake. ’ Even though we feel that the second approach may be biologically more appropriate, we opted for the first approach because feed intake is easier to measure and control than lipid deposition.
The protein and lipid deposition response curves are also given as well as the marginal response to a change in energy intake at 75 days of age. increases and there will be a point in time where protein deposition is no longer determined by feed intake capacity but by PDmax. In InraPorc, we assume that at 70 kg of body weight, the feed intake capacity of the pig is sufficient to attain PDmax (as indicated by the parameter ‘BW PDmax’), but this value can be modified by the user. The concepts depicted in Fig.
C. M. (1995) The evaluation of the growth parameters of six strains of commercial broiler chickens. British Poultry Science 36, 247–264. B. J. (1994) Accuracy, precision and commercial benefits of growth modelling for broilers. Journal of Applied Poultry Research 3, 391–402. F. (1941) Protein in poultry nutrition – a review. Poultry Science 20, 362–368. Hochman, E. M. (1972) Optimal decision in the broiler producing firm: a problem of growing inventory. Giannini Foundation Monograph 29, 1–49. pdf (accessed 22 May 2013).