EFFECT OF DIFFERENT LEVELS OF OPTIZYME AND PHYTASE ENZYMES AND THEIR INTERACTIONS ON THE PERFORMANCE OF BROILER CHICKENS FED CORN/SOYBEAN MEAL: 3. EUROPEAN PRODUCTION EFFICIENCY FACTOR, EUROPEAN BROILER INDEX AND SOME IMMUNE ORGANS

Metwally, M. A.; Farghly, M. F. A.; Ismail, Z. S. H.; Ghonime, M. E.; Mohamed, Inas A.

doi:10.21608/ejnf.2020.148158

EFFECT OF DIFFERENT LEVELS OF OPTIZYME AND PHYTASE ENZYMES AND THEIR INTERACTIONS ON THE PERFORMANCE OF BROILER CHICKENS FED CORN/SOYBEAN MEAL: 3. EUROPEAN PRODUCTION EFFICIENCY FACTOR, EUROPEAN BROILER INDEX AND SOME IMMUNE ORGANS

Document Type : Original Article

Authors

¹ Dept. of Poultry Production, Fac. of Agric., Univ. of Assiut, Assiut, 71526 Egypt

² Dept. Animal Production, Fac. of Agri., South Valley Univ., Egypt

³ Dept. of Animal and Poultry Production, Fac. of Agri., and Natural Resources, Aswan Univ., Egypt

⁴ Dept. of Poultry Production, Fac. of Agric., Univ. of Beni Suef University, Egypt

10.21608/ejnf.2020.148158

Abstract

A total of 180 unsexed 1-day old IR broiler chicks were randomly distributed into 6 treatments of 3 replicates each (10 birds each) in experiment for 5 weeks of age. A factorial design (3×2) was used in which there were three levels of multienzymes, optizyme (0, 250, 500 mg/kg diet) and two levels of phytase enzyme (0, 1500 FTU/kg diet). No significant effects due to treatments on both European production efficiency factor (EPEF) and European broiler index (EBI). Bursa percentage was significantly higher in birds fed 250 mg/kg optizyme plus 1500 FTU/kg phytase. Immune organs, such as spleen and bursa of Fabricius were significantly increased with both multienzyme, optizyme plus phytase supplementation. It could be concluded that multienzyme optizyme supplementation at the level of 250 or 500 mg/kg plus 1500 FTU/kg phytase improved significantly (P<0.05) immune status of broiler chicks.

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