See:
Dr. Fiodor S. Marchenkov likes the comment:
A work published in 2017 (Santos et al., 2017) http://dx.doi.org/10.1016/j.aninu.2017.02.001 showed there is no additivity in the combination of phytase superdosing, xylanase and protease. Something to take into account when formulating diets and accept that having more enzymes in the formula does not mean they are going to work with the same efficiency. There is a nutrient limitation as key nutri ...
Dr. Fiodor S. Marchenkov likes the comment:
In one of my experment, we observed that the protease has no significant improvement in the amino acids digestiblities in corn, SBM and Wheat based diet. It was an independent university research. There is a lot of discussion about the matrix values of the enzymes which are advocated by the producers. In fact, it need to be critically evaluted by the feed mill nutritionists and try to establish th ...
Participation in Forum on June 24, 2020
Dr Piotr Stanislawski 100%. Everybody speak about activity, but nobody about substrate. Is it enough substrate quantity for enzyme in the feed? If not, what is reason to increase enzyme dosage? Are enzyme's matrix values also depending on substrate content? How can we calculate this? A lot of complicated problems for nutritionists.
1
Dr. Fiodor S. Marchenkov likes the comment:
Dr. Vijay Swami as I know protease doesn't show negative results in higher dose. But the negative is that it doesn't show positive results if protein/AA in feed are high; simply not substrate/space to improve.
Dr. Fiodor S. Marchenkov likes the comment:
Sadaqat there are matrixes for NSP enzymes used by part of nutritionists/companies. In practice we use usually at least 2 enzymes: carbohydrase (xylanase and/or glucanase) and phytase. Then using matrix for phytase we add only ME uplift for cereals with carbohydrase ( eg.5-6% for wheat and/or 8% for barley).Other nutrients for carbohydrases are neglected.
Dr. Fiodor S. Marchenkov likes the comment:
Pirzado M Zakria Also need to know which enzyme is contributing more in that cocktail (e.g.) if its NSPase base then you can consider ME, primarily, and ignore other factors. Do likewise for other enzymes.
Participation in Forum on June 24, 2020
Dr Piotr Stanislawski Hi Piotr!!! Nice to hear from you again! What is problem? Tr-inhibitor? Simply drop off SBM and replace it by SFM, add a little bit lysine, proper enzymes mix (you know what is necessary to add:)) and everything will be ok! Including protease, of course. My factory apply proteases mix, too: alkaline, neutral and acid protease. Any case it is possible to improve AA digestibil ...
1
Dr. Fiodor S. Marchenkov likes the comment:
Luciano Andriguetto Protease is used to increase AA digestability (by 3-5% average) in the diet. It is not only SBM. The additional (side) effect is to deactivate tripsin inhibitors if SBM is not enough toasted/too low temperature. For "properly" toasted SBM the additional effect is not required. But protease-exogenous is still active and required for SBM and other proteins sources to increase the ...
Participation in Forum on June 24, 2020
Edwin T Moran Dear Mr.Edwin, yes it is. The best way is to mix enzymes cocktail and hold it some time during 30 centigrades in thermostat. We perform this test during a half year. Activity of all enzymes was approx.80% or normal level. But protease was not DP-100, it was from another producer.
1
Dr. Fiodor S. Marchenkov likes the comment:
Mercedes Vazquez-Anon Thank you for the effort of your answer. Having chymotrypsin type activity provides broad based action on proteins by cleaving peptide linkages of hydrophobic amino acids which usually dominate most proteins. Kafirin is good example by having a very large amount of leucine. It nicely clears starch occlusion of all proamines in grain endosperm enabling supplemental amylase to ...
equalizer Statistics: Forums(64)
Information
Location:Kyiv, Kyyiv, Misto, Ukraine
Profile: Businessman / entrepreneur / shareholders
Followers (10)