To meet the challenges of our growing population sustainably, livestock feeding practices need to be improved. Optimized protein supply plays a major role, which is where Mepron® from Evonik comes in. Learn more about how your farm can benefit from this important feed additive in this short video.
I am of the opinion that if we are feeding rumen protected protein meals like rapeseed, groundnut, soya etc., in the ration then feeding rumen protected lysine may not be essential. However, if the ration is supplemented with rumen protected methionine @ 10-15 g per day, along with rumen protected protein meals, it is highly economical in terms of improvement in quality and quantity of milk.
Dear colleagues,
Can the application of Mepron improve the ecological footprint on dairy farms?
Are there any specific numerical parameters that are relevant for dairy cow farms from that point of view?
Thanks a lot for the advice!
Dear Claudia,
what's your take on using a methionine analogue, any down side to it? How do you compare it with pure methionine when the analogue is a precursor of L-Methionine and has a bypass value as well.
Also Mepron is a source of Protected DL-Methionine or is it just L-Methionine? Because D has to be converted to L-Methionine for absorption in the small intestine. Correct me if i am wrong please. Also absorption for pure methionine is a saturable process and takes place through active transport but for an analogue i think its by diffusion so less or no energy dissipated during absorption and less stress in summers.
Dear Mr. Branco Stuburi, sorry you request the valuable opinion to Dr. Claudia Parys, but for me all which is relate to cows physiology is my passion and of course specifically amino acid which is one of the most important fields, where the science do not advance to much yet. So please allow me to provide some personal opinion to your question about combination of RP Methionine and RP Lysine.
The most required amino acid is the Methionine in the cow’s functions but still important the Lysine and now also start to be included in the research and test the Histidine.
I am a field researcher professional, and following the combination of the first experiences I tested in a large number of dairy cows. I am using a ratio of 3:1 Lys/Met but now some new experiences say that the best combination can be the ratio 3.9:1. Because this was tested in a small number of dairy cows, I decide to start up in the next month a large test with not less that 100 cows.
Is important to clarify that the combination of the use of amino acid in the formulation as an important issue to consider for the best physiology of the cows, and this is depending the environment conditions and type forages, feeds and quality as well formulation and cows requirements.
Actually I am using a ratio of 3 to 1 Lys/Met into the formula result, which mean 10 gm. of Met and 20 gm. of Lys, but this can fluctuate, for this reason I will advice to made your own test according the formulas and adjust according the results in this way you can adjust in reference to your own experience.
Regards
Gustavo Pourraid
Thank you very much for the answers, Dr. Claudia Parys!
Here are two more questions on this topic if you have any advice.
Is the situation similar for lysine and protected lysine?
Is it possible, with a combination of methionine and lysine, in one matrix (fixed ratio) that is also protected from decomposition in the rumen, to have the most accurate feeding possible in order to achieve the best precision nutrition, optimal costs and health of dairy cows and the environment protection?
(eg if there is variability in plant feeds (silage, cereals, soybean meal....), ie differences in CP and AA contents)
KR, BS