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Information Journal Paper

Title

THE EFFECT OF MANNAN-OLIGOSACCHARIDE PREBIOTIC ON PERFORMANCE, INTESTINE ILEUM MICROFLORA, IMMUNE TRAITS AND ILEUM NUTRIENT DIGESTIBILITY IN LAYING HENS FED DIETS WITH DIFFERENT CRUDE PROTEIN LEVELS

Pages

 Start Page 627 | End Page 643

Abstract

 This study was carried out to investigate the effect of mannan-oligosaccharide PREBIOTIC on performance, egg quality, immune response, intestine ileum microflora and NUTRIENT DIGESTIBILITY in LAYING HENS fed various levels of CRUDE PROTEIN. A total of 150 Hy-Line W-36 LAYING HENS were assigned to a 2×3 factorial arrangement of treatments. Experimental diets consisted of three levels of CRUDE PROTEIN (recommended level for strain, 90 and 95% of recommended level) and two levels of mannan-oligosaccharides (0 and 0. 1% of diet). Reduction of CRUDE PROTEIN to 10% of basal diet resulted in decrease of egg weight, egg production, egg mass and feed conversion ratio (p<0. 01). Supplementation of mannan-oligosaccharide into the diet improved egg production and egg mass (p<0. 05). Newcastle antibody titer, primary and second antibody response against sheep red blood cell increased by supplementation of mannan-oligosaccharides (p<0. 05). Reduction of CRUDE PROTEIN to 5% reduced blood serum triglycerides concentration (p<0. 05). Reduction of CRUDE PROTEIN to 5 and 10% of diet caused increases in digestibility coefficients of organic matter and Reduction of CRUDE PROTEIN to 10% caused decline of crude fat digestibility (p<0. 05). Dietary supplementation mannan-oligosaccharides increased crude fat digestibility and decreased ileal E. coli count (p<0. 05). So, supplementation of mannan-oligosaccharide at levels of 0. 1% of diet improved immune parameters and intestinal ileum microflora. Similarly, CRUDE PROTEIN at levels of 15. 68% of diet did not reduced performance parameters of LAYING HENS from age 47 to 57 weeks.

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