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Evonik Animal Nutrition

Supplemental dietary methionine sources have a neutral impact on oxidative status in broiler chickens

Published: September 17, 2018
Summary
Conclusions Dietary methionine source (DL-Met, L-Met or DL-HMTBA at 65 % bioefficacy) did not affect the ratios of reduced to oxidized glutathione or reduced to total glutathione in intestinal tissue, liver or breast muscle None of the dietary methionine sources (DL-Met, L-Met or DL-HMTBA) consistently affected biomarkers of antioxidant capacity (ferric reducing ability) or oxidative stress ...
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Authors:
Rose Whelan
Evonik Animal Nutrition
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Dr Valeriy Kryukov
27 de abril de 2020

Dr. Rose Whelan!
You've done some very interesting research!
I will not discuss interesting data on biochemistry, but table 3 is clear to everyone.it shows that the group with L-methionine was slightly better than the group with DL-methionine. It can be assumed that D-methionine from DL methionine still does not completely turn into L-methionine.
In passing, I note that you correctly consider the conversion rate of the hydroxy analog of methionine to methionine to be 0.65.

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