Effect of Feed Grade Acidifier, Phytase or their Combined Supplementation on Growth Performance and Phytate Utilization by Broiler Chickens
Abstract
The effect of feed grade acidifier, phytase or their combined supplementation on growth
performance and phytate utilization by broiler chickens was investigated. Phytate can inhibit
growth performance in chickens by chelating feed nutrients limiting their bioavailability to simple
stomach animals. Hence the need to supplement additives to enhance feed utilization and
performance. A total of 360-day old broiler chicks were assigned to five treatment groups each
replicated thrice with 24 and 20 chickens at starter and finisher phases respectively, in a
completely randomized design. Diet for the control treatment had optimal available phosphorus
at 0.5% while that of other treatments was sub-optimal at 0.4%. The control diet did not have
additives while treatment two and three were supplemented with 0.3% acidifier and 0.01% phytase
respectively. Diets for treatments four and five had both acidifier and phytase at 0.3% acidifier +
0.01% phytase and 0.3% acidifier + 0.02% phytase respectively. Supplementation of 0.3%
acidifier alone increased weight gain by 2.91 and 9.72% at starter and finisher phases respectively
while those fed diet containing 0.01% phytase further improved weight gain by 4.44 and 18.17%
at both phases respectively. Supplementation of both additives was better than individual
supplementations as weight gain improved by 7.54 and 21.77% at starter and finisher phases
respectively. It was concluded that combined supplementation of 0.3% organic acid and 0.01%
phytase in broiler diets is beneficial for phytase utilization and improved growth performance.
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References
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