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A Simulation Model for the Protein Deposition of Pigs According to Amino Acid Composition of Feed Proteins
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사료의 아미노산 조성에 따른 돼지의 단백질 축적을 나타내는 수치모델

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Academic journal
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Journal
The korean Society of Food Science and Nutrition Journal of the Korean Society of Food Science and Nutrition Vol.28 No.1 KCI Accredited Journals SCOPUS
Published
1999.1
Pages
178 - 190 (13page)

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A Simulation Model for the Protein Deposition of Pigs According to Amino Acid Composition of Feed Proteins
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This study was conducted to develop a simulation model for the growth dynamics of pigs and to describe quantitatively protein deposition depending on the amino acid composition of feed protein. In the model it is assumed that the essential processes that determine the utilization of feed protein in the whole body are protein synthesis, breakdown of protein, and oxidation of amino acid. Besides, it is also assumed that occurrence of protein deposition depends on genetic potential and amino acid composition of feed protein. The genetic potential for the protein deposition is the maximum capacity of protein synthesis, being dependent on the protein mass of the whole body. To describe the effect of amino acid composition of feed on the protein deposition, a factor, which consist of ten amino acid functions and lie between 0 and 1, is introduced. Accordingly a model was developed, which is described with 15 flux equations and 11 differential equations and is composed of two compartments. The model describes non-linear structure of the protein utilization system of an organism, which is in non-steady-state. The objective function for the simulation was protein deposition(g/day) calculated according to the empirical model, PAF(product of amino acid functions) of Menke. The mean of relative difference between the simulated protein deposition and PAF calculated values, lied in a range of 11.8%. The simulated protein synthesis and breakdown rates(g/day) in the whole body showed a parallel behavior in the course of growth.

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UCI(KEPA) : I410-ECN-0101-2009-511-018108284