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Occupation: Expert for poultry nutrition at Evonik Nutrition & Care GmbH
Location: Hessen, Germany
Dr. Andreas Lemme likes the video:
Dr. Stella Molck, Scientist Microbiology RD&I at Evonik, explains how dynamic in vitro intestinal simulation tools provide deeper insights than traditional poultry gut health studies, helping researchers better understand gut function, feed additive performance, and microbiome interactions.
Participation in Forum on September 20, 2026
@Ana Gavrau Thank you for your comment, Ana. As I do not want to repeat myself just a quick comment on the glycine.If you start modelling glycine metabolism in order to understand where the big quantities of Gly would coming from and would be needed in the metabolism, you will find out that Gly from betaine degradation makes only a tiny share - still if you formlate for min. Gly-equivalents it may ...
Participation in Forum on September 14, 2026
@Gene Pesti Dear Gene, thank you for this contribution. I guess it underpins that it is worthwhile to go back to metabolic pathways and to learn (and maybe undertand) about the manyfold interactions.
Dr. Andreas Lemme likes the comment:
It is hard to evaluate much of the data in this area because there are so many factors involved. In my early work we were not controlling folic acid levels, a mistake. I am glad that one of my students and I were the ones that figured it out. Wheat products can contain up to 4000mg/kg betaine. Animal products and most other plant products have some. Corn and soy have none that we could detect. At ...
Participation in Forum on September 9, 2026
@Kalyani SarodeDear Kalyani Sarode, your remark adds an aspect which we usually do not emphasize a lot in context of whether or not betaine can replace supplemental methionine. Indeed, also cobalamine (B12) has an - at least - as important role for remethylating homocysteine to methionine - which actually reduces the importance of betaine in this context.You remind me to be scientifically correct. ...
Article published the August 24, 2026
BETAINE CAN NOT REPLACE METHIONINENutritionists constantly seek opportunities to reduce diet costs while maintaining optimal animal performance. When ingredient prices rise, nutritionists search for ways to reduce their use or replace them with alternative ingredients.With respect to methionine (Met), it is sometimes claimed that supplemental betaine (BET) has the potential to replace a substantia ...
Participation in Forum on April 7, 2026
@Gene Pesti , I agree - we need to distinguish between "significance" and "relevance" on one hand and controlled scientific conditions with many replicates resulting in strong statistical power and commercial conditions which are characterised by many influence factors and especially between farm (even house) variance.Regarding relevant differences, I know integrators who observe their meat yields ...
Dr. Andreas Lemme likes the comment:
For a discussion of the true protein content of feed ingredients and a pretty good N to true protein factor see Alhotan et al. (2024) https://doi.org/10.1080/23311932.2024.2428821. Of course it is better if true protein is determined from the sum of the amino acid residues.And then to balance true protein and dLYS see Alhotan and Pesti (2016) https://doi.org/10.1080/00071668.2016.1180666Some comme ...
Article published the February 19, 2026
IntroductionThere are several advantages stemming from crude protein (CP) reductions in diets for broiler chickens, including decreased nitrogen (N) excretion and ammonia (NH3) emissions coupled with improved litter quality resulting in enhanced bird welfare [1, 2]. Moreover, soybean meal inclusions are considerably lower in reducedCP diets. Australia, and many other countries, imports substantial ...
Article published the December 10, 2025
IntroductionCurrent poultry production targets at reducing productions costs and nitrogen excretion into the environment while maintaining an effective animal performance. The key to limit nitrogen excretion is a reduction of the protein content of the diet with concurrent supplementation of deficient and (performance-)limiting amino acids (AA). The aim is to provide balanced quantities of individ ...