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Abstract

EFFECT OF DIFFERENT LEVELS OF ROSELLE SEED SUPPLEMENTED WITH COMMERCIAL PHYTASE ENZYME ON THE PERFORMANCE OF BROILER CHICKENS

Rogia, Mehdi Hag Elshib and Mukhtar Ahmed Mukhtar*

ABSTRACT

This experiment was conducted to evaluate the nutritional value of rosella seed, as a protein source, with two levels of enzyme phytase (750 – 1000) mg/kg feed on the performance, carcass yield of broiler chicks. One hundred and eighty six, seven day-old unsexed broiler chicks, aberacre strain, were used. Chicks were randomly distributed to 8 treatment diets (A, B, C, D, E, F, G and H), each treatment has 3 replicates, the first group A, Fed on the control diet used (without rosella seeds+750 mg/kg enzyme), group B fed on control diet used (without rosella seeds+1000 mg/kg enzyme), group s, C and D fed on 5% rosella seeds +750 and 1000 mg/kg phytase commercial enzyme respectively, groups E,F fed on 10% rosella seeds +750 and 1000 mg/kg phytase commercial enzyme respectively groups G and H) fed on 15% rosella seeds +750 and 1000 mg/kg phytase commercial enzyme respectively. Diets were formulated to meet the requirements of broiler chicks according to NRC (1994). Experimental parameters contained growth performance, slaughter and carcass characteristics. Results showed no significant differences in the performance (weight gain, feed intake, and feed conversion ratio and mortality rate), for chicks fed on diets containing graded levels of rosella seeds. The supplementation of diets with enzyme improved the performance of chicks. Results also showed on significant difference due to the inclusion of rosella seed or enzyme supplementation. Dressing percents, non carcass components, commercial cuts and their separable meat quality, other values (total protein, uric acid,), observed no significant among all tested groups. Economically rosella seeds can be included in broiler diets as plant protein source up to 10% supplemented with phytase enzyme at 1000mg /kg diet.

Keywords: .


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