Antônio Mário Penz Junior

I think I like everything about your paper and agree with the other comments, except for the title. I think you measured responses to levels or concentrations, %'s, not intake. Sometimes people measure responses to intake, which gives high R2 values, but then another equation is needed to relate intake to concentration to know how much to put in the feed. As for how to find the ideal balance of am ...

Congratulations to the authors for publishing such a nice research in Engormix. One remark that could be done, is that based on this design, it's not possible to define an ideal ratio of these amino acids to lysine, since lysine is in excess (as other amino acids). With enough trials with many different amino acids you might eventually get there but a different design might be more interesting. On ...

Betaine Is Not Merely a Substitute for Methionine1. Unique Function: An Irreplaceable "Osmotic Regulator"The most distinctive feature setting betaine apart from other methyl donors (such as methionine and choline) is its unique role as an osmotic buffer.Core Anti-Stress Mechanism: When intestinal cells (especially during summer heat stress or diarrhea), liver cells, and kidney cells face high-osmo ...

As mentioned before in the FORUM the microbioma of the digestive tract varies with age of the animal so the use of starch for microbial growth and then with less availability to the animal, but with a change of properties as microbial protein. If you follow this pathway the changes are enormous and endless changes.