Study On The Response Effect Of White Feather Broilers To Sodium Acetate

In animals,acetic acid is the main short-chain fatty acid,which not only acts as an energy substrate to provide energy for the body,but also plays an important role in regulating physiological activities such as lipid metabolism,intestinal health,and body immunity.In this experiment,Ross 308 broilers were used as the research object to explore the effects of dietary sodium acetate(Na Ac)supplementation at different levels on growth performance,nutrient utilization,serum biochemical indexes,digestive enzyme activities,and intestinal morphology in white-feathered broilers.In this experiment,288 7-day-old Ross 308 broilers,were randomly divided into control group(fed with basal diet),basal diet+ 0.1% Na Ac,basal diet + 0.2% Na Ac,basal diet + 0.3% Na Ac,basal diet + 0.4% Na Ac and basal diet + 0.5% Na Ac,each treatment group set up 6 replicates,each replicate 8 chickens,officially reared for 14 days.Research indicates:(1)There was no significant differ]rence in the average daily feed intake,average daily gain,feed-to-weight ratio and abdominal fat rate of white feather broilers among the groups in the diet(P>0.05);In the 0.2% and 0.3%Na Ac addition groups,the bursa index was significantly decreased(P<0.05),but the addition of Na Ac had no significant effect on the thymus index and the spleen index;the addition of 0.4% Na Ac e significantly increased the apparent utilization of crude fat(P>0.05),and Na Ac addition had no sinificant effect on the nutrient metabolism rate of crude protein,crude ash,energy,calcium and phosphorus(P>0.05).(2)The serum content of high density lipoprotein cholesterol(HDL-C),low density lipoprotein cholesterol(LDL-C),cholesterol(TC),albumin(ALB),globulin(GLB),total protein(TP),total antioxidant capacity(T-AOC),malondialdehyde(MDA)and the serum alkaline phosphatase(ALP)activity were not significantly affected by adding Na Ac(P>0.05).The levels of serum triglyceride(TG)in Na Ac added groups were significantly higher than those in the control group(P<0.05);Na Ac addition significantly affected the level of serum glucose(GLU),compared with the control group,the serum GLU level decreased significantly in the 0.2%,0.4% and 0.5% Na Ac groups(P<0.05).Compared with the control group,the serum uric acid(UA)level in the 0.5% Na Ac group increased significantly(P<0.05),and there was no significant difference between the other groups(P>0.05);Na Ac added significantly increased serum alanine aminotransferase(ALT)activity(P<0.05),but there was no significant difference between the 0.2% addition group and the control group(P>0.05);0.4%,0.5% Na Ac added significantly increased aspartate aminotransferase(AST)activity(P<0.05),and there was no significant difference among other groups(P>0.05);with the increase of Na Ac added,serum Ig A levels increased significantly(P<0.05);the serum total superoxide dismutase(T-SOD)activity in the 0.2%Na Ac group was significantly higher than that in the control group(P<0.05),and there was no significant difference between the 0.1% and 0.3% s Na Ac groups compared with the control group effect(P>0.05),while the serum T-SOD content in the 0.4% and 0.5% Na Ac groups decreased significantly(P<0.05).(3)The addition of Na Ac significantly increased the activity of intestinal lipase(P<0.05),but there was no significant difference between the 0.1% Na Ac group and the control group(P>0.05).There was no significant difference in the activity of protease and amylase among the groups(P>0.05).The addition of Na Ac had no significant effect on the chyme p H in the duodenum and jejunum(P>0.05),but significantly decreased the chine p H in the ileum and cecum(P<0.05).(4)The addition of Na Ac significantly improved the intestinal morphology of the duodenum,and the addition of 0.1% Na Ac significantly improved the duodenal villus height and the villus-to-crypto ratio(P<0.05).There was no significant difference in the depth of the fossa(P>0.05);the addition of Na Ac did not significantly affect the intestinal morphology of the jejunum and ileum(P>0.05).To sum up,under the conditions of this experiment,the addition of sodium acetate in the diet has no significant effect on the growth performance of white feather broilers,but in the intensive breeding process of white feather broilers,when the dietary sodium acetate addition level is 0.14%～0.16%,it can be improve the oxidative stress,Enhancing immune ability and metabolic regulation ability of white-feathered broilers may improve the growth performance of white-feathered broilers to a certain extent.