Participation in Forum on February 20, 2025
Dear Mohamed, thanks a lot, 100% agree, actually and important.
Dr. Fiodor S. Marchenkov likes the comment:
Dear All,formulating in Bestmix, I also considered the total Ca and dig./av. P for the added phytase; and energy (ME) and AA for the NSP enzymes only. On this way I estimated to be on the safe side, because the nutrient matrix values indicate the amount of nutrient that could be released when the enzyme is added.In the past 10 years it became a trend to request and offer “matrix values&rdquo ...
Dr. Fiodor S. Marchenkov likes the video:
Can betaine replace any methione? Ana Gavrau, Global Technical Product Manager at Agrana, answers this questions and goes deeper on the function of betaine in poultry nutrition in this video.
Participation in Forum on November 28, 2023
This is probably one of the fundamental questions of modern microbiology, which has always focused on the search for criteria for identifying microorganisms. Remember Bergey's classic bacteria guide? The morphology of the colonies was supported by the composition of the nutrient medium. Then the criterion was the ability to metabolize specific carbohydrates. And now 16s sequencing has been added t ...
Participation in Forum on November 13, 2023
@Alvaro Dubois Dear Alvaro, thanks for discussion participance. I think we should return to the original topic of our discussion. There are good programs for optimizing diets, the issue is only in the matrix values of the added enzymes or in mixtures of these enzymes. The difficulty is that program developers must enter matrix values into the database of their programs. But they need assurances th ...
Dr. Fiodor S. Marchenkov likes the comment:
@Dr. Fiodor S. Marchenkov, totally agree, but there is also a big problem that impacts response of enzymes, most individual matrices are also evaluated under conditions that do not apply in practice, look values from phytase commercial phytases, blame 5 - 10 improvement on amino acids digestibilities at 500 ftu, but several New publications confirm papers published with Dr. Parsons lab, matrices d ...
Participation in Forum on October 26, 2023
@Luis Fernando Vergamini Luna Yes it is. It is not correct to use matrix indicators of individual enzymes, since in practice a mixture of enzymes is always used. For example, if you want to use only xylanase, then a reasonable question arises: does your feed consist of only wheat? And of course, it is wrong to simply use the sum of matrix values, since enzymes interact both with substrates and wit ...
Dr. Fiodor S. Marchenkov likes the comment:
Hi Pirzado M.ZakriaThere is a matrix for multienzymes use. The general rule is: minerals from Phytase, energy from NSP and protein from protease (as 100%). From other enzymes, we take 50-25%. This is a simplification, of course, and the composition must be considered individually. For exact calculation please ask the producer/distributor as DSM, Danisco, AB or Addiseo.
Dr. Fiodor S. Marchenkov likes the video:
Dr. Piotr Stanislawski shares his experience with Engormix members regarding the use of enzymes in poultry diets and gives his advice on how to do it properly.
Participation in Forum on May 30, 2023
Luis Fernando Vergamini Luna, I absolutely agree. All metabolic pathways need to be in balance. NEAA are an important part of metabolic participants.