| Experiment was conducted to study egg production, egg shell quality, hatchability, feed intake, mortality rate and feed cost per egg of Pekin hybrid parent stock fed with phytase supplemented diets. One thousand and two hundred females and two hundred and forty males were sampling allocated into 3 treatment groups with 2 replications in completely randomized design. All groups were fed with commercial diets supplemented with 0, 300 and 500 units of phytase/kg feed. The results showed that the number of small eggs and egg weight were significantly different (P<0.05) in all treatments. The treatment supplemented with 300 units of phytase/kg feed had the lowest number of small eggs (3.88 eggs/200 ducks/day), and had the highest egg weight (80.48... |
