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Darmani Kuhi, H. (2013). Application of the law of diminishing returns for partitioning lysine and methionine intake between maintenance and growth in young broiler chicks. Aquatic Physiology and Biotechnology, 2(1), 29-36.
H. Darmani Kuhi. "Application of the law of diminishing returns for partitioning lysine and methionine intake between maintenance and growth in young broiler chicks". Aquatic Physiology and Biotechnology, 2, 1, 2013, 29-36.
Darmani Kuhi, H. (2013). 'Application of the law of diminishing returns for partitioning lysine and methionine intake between maintenance and growth in young broiler chicks', Aquatic Physiology and Biotechnology, 2(1), pp. 29-36.
Darmani Kuhi, H. Application of the law of diminishing returns for partitioning lysine and methionine intake between maintenance and growth in young broiler chicks. Aquatic Physiology and Biotechnology, 2013; 2(1): 29-36.

Application of the law of diminishing returns for partitioning lysine and methionine intake between maintenance and growth in young broiler chicks

تحقیقات تولیدات دامی
Article 3, Volume 2, Issue 1, March 2013, Pages 29-36    PDF (106.21 K)
Document Type: Research Paper
Author
H. Darmani Kuhi*
Department of Animal Science, Faculty of Agricultural Sciences, University of Guilan
Abstract
In the study presented here, the scope of a reparameterized monomolecular model was extended in growing young male chicks to provide an estimate of their lysine and methionine requirements for maintenance and growth. The equation was used with the NLMixed procedure of SAS to estimate parameters and combine them to determine other biological indicators. A number of criteria were used to evaluate general goodness of fit of the model, including model behavior, biologically meaningful parameter estimates and statistical performance. The estimated maintenance requirements and the determined values of lysine and methionine requirements for protein accretion were in good agreement with values reported previously by other researchers. Average efficiency of recovering lysine and methionine were greatest at low intakes and decreased as intakes increased. In conclusion, results presented here showed the applicability of the monomolecular equation to predict the magnitude and direction of responses of growing young broilers to dietary lysine and methionine intake without making any initial assumptions.
Keywords
Broilers; Lysine; Methionine; Maintenance and growth requirements; The law of diminishing returns
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