Advances in Animal and Veterinary Sciences

Research Article
Adv. Anim. Vet. Sci. 9(11): 1851-1862
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Mamdouh Omar Abd-Elsamee1, Abd-Elhakim Saad Abd-Elhakim2, Ragab Rezk Elsharkawy2*, Hany Mohamed Ramadan Elsherif1

1Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt; 2Animal Production Research Institute, Agricultural Research Center, Giza, Egypt.

Abstract | This study compared between yeast cell wall (YCW) and mushroom (MR) as sources of both β-Glucan and mannan oligosaccharide (β-G+MOS) at different supplementation levels on growth performance, carcass characteristics and plasma protein fractions of 420 unsexed a day-old Arbor Acres broiler chick. Chicks were randomly allocated to seven dietary treatments each of 4 replicates (15 birds per replicate). Birds had the same management protocol and were housed in three-deck batteries, and had free access to feed and water up to 35 days of age. Birds were switched to the experimental diets as follows; T1, a basal control diet. Diets T2, T3 and T4 were supplemented with a combination of β-G+MOS at 100, 200 and 300 ppm from YCW, respectively. Diets T5, T6 and T7 were were supplemented with a combination of β-G+MOS at 100, 200 and 300 ppm from MR, respectively. Results show that live body weight (LBW), live body weight gain (LBWG), feed consumption (FC) and feed conversion ratio (FCR) were not significantly affected by source or level of β-G+MOS during all experimental periods, except that YCW had higher (p=0.02) LBWG during finisher and lower FC during starter (p=0.001) than MR based diets. Dietary addition of β-G+MOS improved final LBWG (p=0.007) and FCR (p=0.005) compared to the control. Broilers group fed 200 ppm β-G+MOS from YCW recorded more live weight gain by 13.2 percent and better FCR by 12.17 percent over the control. Carcass percent of 300 ppm β-G+MOS from YCW group was the highest carcass (p=0.03) and being higher by 4.52 percent over the control. It could be suggested that supplementing of β-G+MOS to broiler diets might improve broiler performance regardless the sources or level although, YCW source may be superior especially at finisher period.

Keywords | Beta glucan (β-G), Mannan oligosaccharide (MOS), yeast cell wall (YCW), mushroom (MR), broiler performance