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EFFECT OF ENZYME SUPPLEMENTATION OF BROILER DIETS CONTAINING VARYING LEVEL OF SUNFLOWER MEAL AND CRUDE FIBER

SHAHID RAZA¹, MUHAMMAD ASHRAF², TALAT NASEER PASHA³ AND FAROOQ LATIF⁴

Abstract: An experiment was conducted to evaluate the efficacy of multi enzyme in broiler diets containing varying levels of sunflower meal and crude fiber. Sixteen isonitrogenous experimental diets were prepared using 0, 5, 10 and 15% SFM and 4, 5, 6 and 7% CF, respectively with and without enzyme supplementation and fed to 480 day old broiler chicks. Data on feed consumption, weight gain, feed conversion ratio and dressing percentage was collected.  Results showed significant differences (p<0.05) among different experimental diets for weight gain and feed conversion. The highest weight gain was observed in chicks fed on diet containing 10% SFM and 6% CF with Grindazym while the lowest weight gain was obtained on diet having 10% SFM and 6% CF without enzyme supplementation. Diet containing 15% SFM and 7% CF with NIBGE enzyme @1% of 2.5 Fold was found best on the other hand diet containing 5% SFM and 5% CF without enzyme supplementation had poorest feed conversion among all the experimental diets. Feed intake during the experimental period was not influenced (p>0.05) either by dietary SFM and CF level or enzyme supplementation. However, maximum feed was consumed by birds fed diet containing 5% SFM and 5% CF without enzyme supplementation. While the minimum feed intake was observed on diet formulated with 15% SFM and 7% CF without addition of any enzyme. Dressing percentage was calculated as carcass weight excluding skin including internal organs viz., heart, liver, gizzard and kidneys of the birds. No differences (p>0.05) were observed for dressing percentages on different experimental diets. Results from this experiment suggest that enzyme supplementation can improve nutritive value of high fiber broiler diets. Broiler chicks can grow faster and more efficiently on a diet containing fiber degrading enzymes than on a diet without enzymes.

¹Quaid-i-Azam University, Islamabad

²National University of Science and Technology, Rawalpindi

³University of Veterinary and Animal Sciences, Lahore

⁴National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan