出版社：The International Institute for Science, Technology and Education (IISTE)
摘要：This experiment was designed to evaluate the effects of early feeding programs (FP) (early access to vitagel ® and versus delayed access to feed post hatch for 24 hours ) and growth promoters (GP) as well as investigate the synergistic effects of and GP on blood picture , immune competency , and intestinal microbiology of broiler. A total of 1200 male chicks were allotted into two groups. In hatchery : Fed groups (received nutritional supplement (vitagel ® ) during transport until 24 hours post hatch and deprived groups restricted within transport box for 24 hours post hatch without nutritional supplement . In farm, the birds divided into negative control (basal diet) and positive control (antibiotic (10mg /kg feed) ; Bacillus subtillis (200mg /kg feed) and medicinal plant blend (1g /kg feed ).The immune response against NDV(Newcastle disease) was significantly increased (p<0.05) , while antibody titers(Ab) against SRBCs (sheep red blood cells) were numerically high by vitagel ® . Ab against SRBCs significantly enhanced (p<0.001) with natural growth promoter( Bacillus subtillis and Medicinal plants blend ).Vitagel ® reduces the pathogenic bacteria(p<0.05),also it maintains on beneficial bacteria .Growth promoters showed significant reduced (p<0.001) of pathogenic bacteria( Clostrodium Spp and E.Coli ) and increased (P<0.05) of beneficial bacteria ( Lactobacilli and Bifidobacteria ).The Lymphocyte(L) was higher with natural GP or interaction effect of vitagel ® and GP. (p<0.05) , the Heterophils(H) to Lymphocyte ratio (H/L ratio ) and Heterophil were lower (P<0.01) with interaction effect or natural GP.Results concerning the early feeding supplement confirmed the fact that early feeding post hatch with growth promoters may affect the gut health and immune competence.
