Abstract:
A total of 120 day-old Cobb 500 broiler chicks were reared in Sher-e-Bangla
Agricultural University Poultry Farm, Dhaka. The present study was designed to
evaluate the productive performance and health status of commercial broiler chicks fed
diet containing phytase enzyme compared to base diet. The aims of the present study
were to investigate the influence of a phytase enzyme on the growth performance of
broiler, Body weight, Feed intake, FCR, carcass merits and P status of broilers (tibia ash
contents) of male and female broiler were compared to control feeding of broiler. A
total of 120 day-old Cobb 500 chicks were used in this experiment. Chicks were divided
randomly into 4 experimental groups of 3 replicates (10 chicks with each replications).
One of the 4 experimental group was fed this diet as control while, the remaining Three
groups were fed diet mixed with 3 categories of phytase enzyme (fungal, bacterial
mixed fungal and bacterial).
Here this study T
xi
1
= (control), T
= (Bacterial phytase
enzyme), T
3
= (Combied Bacterial and fungal phytase enzyme) and T
2
= (fungal
phytase)
. The duration of experiment work 28 days. Results of the experiment showed
that addition of phytase diets improved (P<0.5) broilers growth performance and tibia
ash content percent with impact starting from the beginning of the fourth week of the
feeding trial. However, it has no effect on feed intake. Feed conversion ratio and
dressing percent were increased (P<0.05) in birds fed diets supplemented with phytase.
Phytase supplementation had no significant effect on both male and female carcass cuts
compared to control. To investigated the effect microbial phytase supplementation of
microbial phytase specially mixed fungal and bacterial phytase in starter and finisher
diets of broilers(1.5+0.1) g /100 kg of the feeds proved to be beneficial for increasing
the growth performance of broiler, P status of broiler(tibia ash contents).
