Abstract
Effects of prebiotic, probiotic and sybiotic supplementation in diet on growth performance of Native Chicken objective compared effects of prebiotic, probiotic and sybiotic supplementation in diet on growth performance of Native Chicken and effects of prebiotic, probiotic and sybiotic supplementation control E.coli, Salmonella and Cocclidiae in the chicken digestive tract. A total of 120-d-oldcommercial Native chickens were randomly allocated in to 9 dietary groups with 4 replicates; 1) control: basal diet, 2) basal diet plus prebiotic (0.2g/kg diet of Allium cepa L,)3 basal diet plus prebiotic (0. 4% diey of Allium cepa L, 4) basal diet plus probiotic (0.1%g diet of Allium cepa L), 5) basal diet plus probiotic (0.15%g diet of Allium cepa L), 6) basal diet plus prebiotic and probiotic mixture (0.2% diet of Allium cepa L. and 0.1% of Bacillus amyloliquefaciens), 7) basal diet plus prebiotic and probiotic mixture (0.2% diet of Allium cepa L. and 0.15% of Bacillus amyloliquefaciens), 8) basal diet plus prebiotic and probiotic mixture (0.4% diet of Allium cepa L. and 0.1% of Bacillus amyloliquefaciens), 9) basal diet plus prebiotic and probiotic mixture (0.4% diet of Allium cepa L. and 0.15% of Bacillus amyloliquefaciens). Result showed that dietary treatments had no effect on final body weight (BW), weight gain, and average daily gain 1495. 75, 144 2.50, 1546.00 ,1406.75, 1521.75, 1516.00, 1538.25, 1500.00 and 1576.50 g were not significantly different between the treatments (P>0.05). Effects of prebiotic, probiotic and sybiotic supplementation feed intake, feed conversion ratio found that 12.70, 12.64, 13.30, 12.13, 13.01, 13.02, 13.47, 12.83 and 13.75 g/b/d and4.66b ,4.02a, 4.41ab, 4.49ab, 4.43ab, 4.24ab, 4.14ab, 4.23ab ແລະ 4.04a had decreased when compared with the control group. Furthermore, the organs and carcass weights (after slaughter, liver, gizzard, and breast fillet) were not significantly different between the treatments (P>0.05). But effects of supplementary (after pluck, heart, spleen, thigh and drumstick) were significantly different (P<0, 05. However, the total of E.coli, Salmonella and Cocclidiae had decreased when compared with the control group. Dietary supplementation of prebiotic, probiotic and sybiotic can be reduced the populations of unprofitable or potential pathogens (E.coli, Salmonella and Cocclidiae) compared with the control treatment.