Effects of Supplemental Phytase and Xylanase on Phytate Phosphorus Degradation, Ileal Protein and Energy Digestibility of a Corn-soybean-wheat Bran Diets in Broiler Chicks
محل انتشار: مجله علوم و فناوری کشاورزی، دوره: 3، شماره: 1
سال انتشار: 1379
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 42
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شناسه ملی سند علمی:
JR_JASTMO-3-1_006
تاریخ نمایه سازی: 22 آبان 1402
چکیده مقاله:
Effects of supplemental phytase and xylanase in a corn-soybean meal based diet containing
۲۵۰ g/Kg wheat bran, were investigated. on broiler performance and phosphorus
degradability and nitrogen digestibility. Phytase (۵۰۰ and ۱۰۰۰ FTU) and xylanase (۲۷۰۰
and ۵۴۰۰ EXU) individually and in combination were added to the basal diet and given to
۶ replicate groups (۴ birds per replicate). At ۲۱ days of age, birds were weighed and
killed , ileal contents were collected and analyzed for P, N, chromic oxide and gross energy.
Added phytase significantly (P<۰.۰۱) improved feed conversion ratio (FCR) (۱.۵۹ vs
۱.۶۲ g /g) and tibia ash (۴۶۴.۴ vs ۴۴۴.۳ g/Kg). Protein digestibility was increased (۸۱.۷ vs
۷۹.۴%) significantly (P<۰.۰۱) by ۵۰۰ FTU/Kg added phytase. Supplemental xylanase significantly
(P<۰.۰۱) improved FCR (۱.۵۸ vs ۱.۶۳ g/g) and protein digestibility (۸۲.۰ vs
۸۰.۴%). Phytate P degradability was significantly (P<۰.۰۲) improved by added phytase
(۴۱.۴ vs ۲۷.۸%). Combination of supplemental phytase and xylanase had some beneficial
effects on improving the nutritive value of diets containing wheat bran for broilers.
کلیدواژه ها:
نویسندگان
J. Pourreza
Department of Animal Science, Isfahan University of Technology, Isfahan, Islamic Republic of Iran,
H. L. Classen
Department of Animal and Poultry Science, University of Saskatchewan, ۵۱ Campus Drive, Saskatoon, Saskatchewan, Canada, S۷N ۵A۸.