Participation in Forum on October 4, 2024
About the other comment on the generalized use of nutrient matrix for additives other than enzymes (which is true), my point of view is that it's justifiable only when a direct impact on nutrient digestibility (preferentially measured on a standardized ileal basis) is clearly shown on a consistent basis. Giving an additive a matrix only because it improves performance is not correct since the impa ...
Participation in Forum on October 4, 2024
What many nutritionists do in LCF, is to create 2 nutrients for calcium. One might simply have the name calcium and would include the total amount of calcium in the ingredients plus the value assigned in the phytase matrix. To this nutrient it would be assigned the min and max restrictions and it would be used to calculate the Ca.avP ratio (which could receive the restrictions instead of calcium). ...
Participation in Forum on July 11, 2024
Very useful comment, Dr Pesti. Thanks for it.
Participation in Forum on April 22, 2024
Fantastic review. Congratulations to the authors.
Alvaro Dubois likes the comment:
Very good points were raised in this discussion and we see that different approaches are possible. Congrats to all of you. I also would like to add some points that I think we need to take into consideration to better use enzymes: 1-we need to know the amount of antinutritional factors and how they affect each specific feed, for example, soluble Arabinoxylans from one raw material can affect the d ...
Participation in Forum on April 1, 2024
Dear Dr. Ivey.It's always a pleasure to read your comments, especially the ones related to the use of mathematical modeling. I do understand (at least I hope) the concept you put forward on how to establish impact of enzymes on individual ingredients' nutritional matrix. I think it might work reasonably well as long as we are dealing with very simple diets. As we increase the number of ingredients ...
Participation in Forum on March 25, 2024
It's a shame that there wasn't a treatment with a high level of Cu from sulfate. In this way, the only treatment with a real control diet (with the same Cu and Zn levels from sulfate) is Hyd1.
Participation in Forum on February 12, 2024
Dear Dr. Wilkinson. Very interesting material. The variability of limestone in Australia is quite similar to what we see in Brazil, including micro-minerals like iron. One major problem I see with calcium digestibility is how, different form other nutrients, including phosphorus, digestibility is highly influenced by the amount of calcium in a complete feed, as you have mentioned. This is mostly c ...
Participation in Forum on November 8, 2023
Dear Dave Albin. I am not sure if I understood your explanation. Could you try to put it in another words? Sorry for my lack of understanding.
Participation in Forum on November 8, 2023
Dear Dr. Prasad. I got curious about the maximum energy release of 125-150 kcal/kg, whatever the combination of additives and diet composition. Where does this number comes from?