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. 2020 Nov 29;10(12):2240. doi: 10.3390/ani10122240

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) Methionine + Cysteine (Met+Cys) deposition of 0–35 day old broilers fed increasing levels of DL-Methionine (treatments DLM and DLM65) and DL-2-hydroxy-4-methylthio butanoic acid (HMTBA) (A; four-parameter logistic regression analyses on replicate basis, treatment means are plotted in the diagram, required product intake for 95% of asymptotic response 3984 mg DLM and 5991 mg HMTBA); (b) marginal efficiency of ingested products for Met+Cys deposition according to the 1st derivation of the four-parameter logistic regression equation; (c) cumulative efficiency of ingested products for Met+Cys deposition.