Effect Of Yeast Polysaccharide?Fructooligosaccharide?Bacillus Subtilis And Their Different Combinations On The Production Performance,Blood Serum Index,Antioxidant Of Guang Xi Ma Chickens And Its Approach To The Mechanism

A total of 810(hen)Ma chickens at 57 days old were selected and assigned randomly into nine groups,three repeats in each group,30 chickens in each repeat.Nine groups corresponded different treatments,the nine groups were Control group(basal diet),YPS group(basal diet +2 kg/t YPS),FOS group(basal diet +4 kg/t FOS),BS group(base diet +500 g/t BS),YPS +FOS group(basal diet +2 kg/t YPS +4 kg/t FOS),YPS + BS group(basal diet +2 kg/t YPS +500 g/t BS),FOS + BS group(basal diet +4 kg/t FOS+500 g/t BS),YPS + FOS+ BS group(basal diet +2 kg/t YPS +4 kg/t FOS+500 g/t BS)and the Antibiotic group(basal diet +100 g/t Enramycin premixes),respectively.The experiment research the effect of different feed compositions on production performance,slaughter performance,apparent metabolic rate,serum index,antioxidant and mechanism in chickens.The experimental divided into two feeding stages,10-13 weeks for the first stage and 14-17 weeks for the second stage,total of 63 days,the pre-feeding period was 7 days,and the experimental period was 56 days.This Research was consists of three partsThe first part:The results showed:1?Effect ofYPS?FOS?BS and different combinations on the Production performance of Ma chickens:(1)Compared to the Control group,the Final weight of FOS?BS?YPS*FOS?FOS*BS and Antibiotic groups in the 17th week had respectively improved 3.27%?3.47%?3.56%?3.74%and 3.99%(P<0.05).(2)Each test groups had a lower Mortality rate than the Control group(P>0.05).(3)Compared to the Control group,the Average day feed intake of YPS*FOS?FOS*BS and YPS*FOS*BS groups in the 10-17 weeks had improved 4.18%?4.66%and 4.37%(P<0.05).(4)Compared to the Control group,the Average day gain of FOS?BS?YPS*FOS?FOS*BS and Antibiotic groups in the 10-17 weeks had improved 6.28%?6.78%?6.70%?6.85%and 7.85%(P<0.05).2.Effect of YPS?FOS?BS and different combinations on the Slaughter performance of Ma chickens:(1)The FOS*BS group which had the highest percentage of thigh muscle was 22.55%,improve 25.07%than Control group(P<0.05),improve 15.40%than Antibiotic group(P>0.05).(2)Compared with Control group,each Trial groups had a higher Percentage of carcass yield?Percentage of half eviscerate yield?Percentage of eviscerate yield?Percentage of abdominal fat and Percentage of chest muscle,but had no significant differences(P>0.05).The second part:The results showed:Effect of YPS?FOS?BS and different combinations on the Nutrition utilization rate of Ma chickens:(1)Antibiotic group had the highest Protein utilization ratio(68.94%),which was 2.97%higher than Control group(P<0.05).(2)FOS*BS group had the highest Calcium utilization ratio and Phosphorus utilization ratio,which was higher than the Control group(P<0.05),no significant differences between Antibiotic group(P>0.05).The third part:The results showed:1?Effect of YPS?FOS?BS and different combinations on the Blood Serum index of Ma chickens:(1)FOS group had a higher ALP concentration levels than Control group(P<0.05).(2)YPS and BS groups had a lower BUN concentration levels than Control group(P<0.05).2.Effect of YPS?FOS?BS and different combinations on the Blood Antioxidant of Ma chickens:Adding either alone or in combination,YPS,FOS and BS could improve the antioxidant capacity of chickens,Especially YPS?BS?YPS+BS?FOS+BS and Antibiotic group improve soil Chicken antioxidant capacity(P<0.05).Summarize the three parts showed:In this study,the combination of 4kg/t FOS and 500g/t BS have a better effect on production performance,slaughter performance,apparent metabolic rate,serum indexes,antioxidant and mechanism in Ma chickens.It can replace the Antibiotic which used on stage of chickens.