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Evonik Animal Nutrition

Selecting the Correct Methionine Source – A Key Index for Successful Pig Production

Published: November 9, 2018
Summary
Methionine (Met) is the third limiting amino acid (AA) in typical swine diets. Besides protein synthesis as the main role, Met plays an important role as a methyl donor for cellular metabolism and formation of co-enzyme S-adenosylmethionine (Bunchasak, 2009), and involved in immune function and a precursor for the synthesis of glutathione and taurine in animals (Li et al., 2007). The dietary requ...
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Authors:
John Htoo
Evonik Animal Nutrition
Evonik Animal Nutrition
Balachandar Jayaraman
Evonik Animal Nutrition
Evonik Animal Nutrition
Girish Channarayapatna
Evonik Animal Nutrition
Evonik Animal Nutrition
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Juarez Donzele
Universidade Federal de Viçosa - UFV
Universidade Federal de Viçosa - UFV
18 de marzo de 2019

Dr John, reports consistent with information available in the literature. I think it is relevant to make it clear that the use of the D-isomer of amino acids depends on the presence of the specific D-amino acid oxidase. Therefore, the efficiency of the use of methionine D isomers by pigs is directly related to the presence of the enzyme D methionine oxidase. These considerations were made since in the text and in Figure 3, this specificity does not appear.

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Brad Lawrence
Novus
15 de marzo de 2021

The data should be converted to TSAA:Lys ratio for each treatment giving 100% equivalency of methionine as added between the DL and methionine hydroxy analogue sources. This would allow the reader to assess the data in context of how the reader is formulating diets and whether the data was generated below requirement, at requirement, or above requirement as the reader defines the requirement of their pigs.

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