An experiment was conducted to reduce NH3 emissions and N and P content of broiler litter by reducing dietary protein (CP) and P levels and supplementing with amino acids and phytase, respectively, without adversely affecting bird performance. The results suggest that reducing CP to 18.8% in diets fed to chicks over the first 3 weeks of age may reduce performance by less than 5% and therefore may not be advisable. However, during the period 22- to 42-days there were no adverse affects on bird performance between diets with lower CP and P contents. However, there were significant reductions in the N and P content of the litter and indications that NH3 concentrations were reduced. Considering that about 75 percent of total food consumed during the six week growing period occurs within the last three weeks, considerable savings in N and P wastage can be accomplished by reducing CP and P contents of the diet.
|Journal||Paper - American Society of Agricultural Engineers|
|State||Published - 1997|
|Event||Proceedings of the 1997 ASAE Annual International Meeting. Part 1 (of 3) - Minneapolis, MN, USA|
Duration: Aug 10 1997 → Aug 14 1997
ASJC Scopus subject areas
- Agricultural and Biological Sciences (miscellaneous)