Marcelo César Ricci

This is certainly not the case in Argentina where the cheapest feed cost per balanced calorie tends to be at the highest range of commonly used feed energies.And as a consequence, the poultry industry is going towards grow to higher broiler weights to maximize the return over feed costs.

Thank you for the clarifications, Dr. Korver. Maybe the good and old NRC might have been a better standard, even after all the modifications genetics has introduced in current layers. Indeed, the phytase effect was very large. Something to be better investigated. Kind regards.

Hello Alvaro:In this study, we made the decision to use an available P level that would be based on a consistent standard - the breed management guide. Arguments can be made (and I make this argument on a regular basis) that in general, management guides recommend available P well in excess of the actual hen requirements. However, the guide is a consistent standard or point of reference. In our cu ...