Information
Occupation: Expert for poultry nutrition at Evonik Nutrition & Care GmbH
Location: Hessen, Germany
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 ...
Article published the October 16, 2025
1. IntroductionThe production of black soldier fly larvae (Hermetia illucens, BSFL) has been established globally in recent years. Advancements in production and processing technology have facilitated the large-scale rearing of BSFL, which can be attributed to the insect’s affinity to thrive in a wide array of organic substances [1]. These can include by-products from grain, oil seed and foo ...
Participation in Forum on October 16, 2025
Dear Matheus, dear authors,
Indeed, a nice study, and thank you very much, as research on SAA and Thr responses for modelling and optimization purposes became scarce in recent years.
While I agree and applaud the dose-response data and the way you utilised them, I would like to add that both SAA and Thr have a very high involvement in maintenance metabolism and as functional amino acids. Therefore ...
Dr. Andreas Lemme likes the comment:
Thanks for the good information! The CP reduction without losing performance could be related to an indirect anti-nutritional and allergenic reduction. Concentrated protein sources like Glutenose or Soybean Protein Concentrate would be alternatives?
Participation in Forum on September 19, 2025
@Dr Kotaiah Talapaneni Thank you for this comment! This is indeed a clear dilemma and we may distinguish the aim for the two different nutritional strategies. Indeed, genetic potential of broilers is continuously improving and if diets are formulated accordingly, unbelievable performances can be achieved. A feed conversion ratio of 1.35 at 40 days is commercially achieved in some regions of the wo ...