Jamel Maaoui

@Nuhad Daghir Under experimental conditions you can even reduce more. However, the potential of CP reduction depends on the status quo. A good indication for protein reduction would be the nitrogen utilization which can easily be calculated by assuming 30 g N/kg BW. Indeed, nitrogen utilization is also a matter of age or final body weight but the article gives you an indication on German condition ...

I would like to add that I was refering to a rapid and practical determination of digestible organic matter, using the In vitro enzymatic digestion for monogastric animals (e.g., with pepsin and pancreatin); followed by NIRS analysis, with proper calibration. The best is of course to use the synergy between the synthetic AA, high quality protein sources, as well feed additives which can enhances t ...

Dear @Nuhad Daghir- thank you for highliting the protein quality, and I completely agree. As the aminoacids (AA) are the building blocks of the proteins, the quality of the protein sources should be checked by calculating the amount of the AA in 100g of CP; for e.g. Lysin, or Methionine per percentage of CP (g Lysine / 100 g of CP). Also the enzymatic solubility of the organic substance (ESOM) is ...

@Dr Kotaiah Talapaneni Thank you for this comment! This is indeed a clear dilemma and we may distinguish the aim for the two different nutritional strategies. Indeed, genetic potential of broilers is continuously improving and if diets are formulated accordingly, unbelievable performances can be achieved. A feed conversion ratio of 1.35 at 40 days is commercially achieved in some regions of the wo ...

In our part of the world there is a norm that in First week of broiler life provide it feed ad libitum but in second week & third week (may be till slaughter) the feed requirement is calculated by multiplying the number of days & number of birds with constant of 4.5 gram feed, in some houses the constant is 5 g from week four till slaughter. On contrary to this the Ross and Cobb Broiler Performanc ...