Energy-Protein Optimization Effect on the Growth and Production Performances of Koekoek Chickens

There is a driving force of feed cost regardless of production system that leads to feed chickens critically based on their nutrient requirement. Three trials (Trial I-starter, Trial II- grower and Trial III layer phases) carried out to evaluate the growth and production performances of koekoek dual purpose chicken fed diet with different energy and protein levels; and to determine the optimum energy and protein levels for the breed in Ethiopian condition. The metabolizable energy and crude protein (CP) contents were kept in the treatment rations in the ranges of 2650-3150 kcal/kg DM and 19 - 23%; 2800-2900 kcal/kg DM and 16-18%; 2750-2950 kcal/kg DM and 16-17.5%, respectively in Trial I (comprises 6 treatments), Trial II (comprises 5 treatments) and Trial III (comprises 4 treatments). Feed consumption recorded daily and total and average feed consumptions were calculated in all the trails. Body weight (BW) measurements taken every week for Trial I and Trial II and at the start and end of the trial 23 for Trial III then BW changes calculated. Egg production and quality parameters data were recorded; fertility and hatchability also tested. The partial budget was calculated for each trial. The result obtained at the starter phase revealed that no differences (P>0.05) in feed consumption, only total feed cost was higher (P