Kebutuhan Kalsium Ayam Broiler Fase Starter dengan Penambahan Enzim Fitase
Abstract: The aim of this
study was to determine the calcium requirements of broiler chickens in starter
phase with the addition of phytase enzyme. This experiment used 1,200 broiler
chickens (mixed sex) for 21 days rearing period in a closed house. The basal
diets was corn and soybean meal which contained 0.097% Ca and 0.123% P-av. The
treatments consisted of 6 diets treatment: P1 (basal diet with the addition of
0.42% non-phytate phosphorus (NPP), and then P2 to P6 were basal diet with the
addition of 0.22% NPP and 1,000 FTU/kg phytase and the addition of calcium (Ca)
at different levels: 0.82% (P2); 0.74% (P3); 0.66% (P4); 0.58% (P5) and 0.50%
(P6). The growth performance, feed efficiency, and bone mineralization
parameters were studied using Oneway ANOVA in a Completely Randomized Design.
Duncan's new Multiple Ranges Test was used to separate means with significant
differences. Results showed that 0.90% Ca supplementation without phytase and
the reduction levels of Ca from 0.82% to 0.50% increased the amount of feed
consumed by birds in all growth phases (P<0.05). The addition of phytase had
beneficial effects on increasing body weight (P<0.05) and average of body
weight gain (P<0.05), and decreased the value of FCR in 11 - 21 days and 1 -
21 days. The addition of phytase increased protein and energy consumption,
followed by increased in the value of PER and
EER (P<0.05). When phytase was added in the diets, reduction levels
of Ca in the diets up to 0.50% did not give any adverse effect on the tibia
bone ash. It can be concluded that feeding with phytase can sustain growth
performance, feed efficiency, and bone mineralization.
Keywords: Bone mineralization;
Broiler chickens; Calcium requirements; Growth performance; Phytase enzyme
Penulis: Eny Sholikhatin,
Ferry Poernama, Nanung Danar Dono, Zuprizal
Kode Jurnal: jppeternakandd160236
