| Chinese herbal medicine additives play an important role in animal disease prevention and health care,improving animal production performance,improving animal product quality and feed quality.Fermented Chinese herbal medicine is a new type of feed additive based on the traditional processing and fermentation of traditional Chinese medicine,using the particularity of microecology,combined with engineering technologies such as microbial fermentation and enzymatic hydrolysis.In this paper,the effects of Fermented Chinese herbal medicine products(Tikangtai)with different additions on the growth performance,diarrhea rate,nutrient digestibility,intestinal health,intestinal microorganisms and their metabolites of weaned piglets were studied,so as to provide theoretical reference for the application of Fermented Chinese herbal medicine in the production of weaned piglets.In this experiment,a single factor experimental design was adopted,and 162(Dukes)with an initial weight of 7.77 ± 0.03 kg were randomly selected from the farm × long × Three yuan cross weaned castrated boars were randomly divided into three groups according to the principle of similar weight.They were: basal diet group(control group),basal diet plus 3kg /T Fermented Chinese herbal medicine group(3kg / T addition group)and basal diet plus 5kg/ T Fermented Chinese herbal medicine group(5kg / T addition group).There were 6replicates in each group,with 9 pigs in each replicate.The prefeeding test period was 3 days,and the formal test period was 21 days.From the beginning of the experimental period,the daily diarrhea of piglets was observed and recorded.The results were as follows:(1)compared with the control group,the addition of 3 kg/t and 5 kg/t Fermented Chinese herbal medicine in the diet could significantly increase the final weight(FW),average daily intake(ADFI)and average daily gain(ADG)(P<0.01).The feed weight ratio of the test group was lower than that of the control group,but there was no significant difference among the groups(P>0.05).There was no significant difference in diarrhea rate among groups(P>0.05);(2)Compared with the control group,different amounts of Fermented Chinese herbal medicine could significantly improve the apparent digestibility of crude protein(P<0.05),but had no significant effect on the apparent digestibility of crude fiber,crude fat and energy(P>0.05);(3)Compared with the control group,the addition of Fermented Chinese herbal medicine in the diet can significantly improve the chymotrypsin and α Amylase and lipase activities(P<0.01).The chymotrypsin activity and lipase activity of 5 kg/t group were significantly higher than those of control group and 3 kg/t group(P<0.05)α Amylase activity was significantly higher than that of the control group and 5 kg/t addition group(P<0.05),and chymotrypsin activity was significantly lower than that of the control group and 5 kg/t addition group(P<0.05);Compared with the control group,the Fermented Chinese herbal medicine group αAmylase and lipase activities had no significant effect(P>0.05);(4)Compared with the control group,the addition of Fermented Chinese herbal medicine in the diet could significantly reduce the concentration of lipopolysaccharide(LPS)and significantly increase D-lactic acid(D-LA)(P<0.01),but had no significant effect on the concentration of diamine oxidase(DAO)(P>0.05);(5)Compared with the control group,the addition of Fermented Chinese herbal medicine in the diet could significantly increase the height of jejunal villi and the depth of jejunal recess(P<0.05);(6)In the alpha diversity index of colonic microorganisms,compared with the control group,the addition of Fermented Chinese herbal medicine in the diet could significantly increase the Shannon index(P<0.01),but had no significant effect on Simpson,ACE and Chao1 index(P>0.05);In the alpha diversity index of cecal microorganisms,the ace index of Fermented Chinese herbal medicine group was significantly higher than that of the control group(P<0.05),and there was no significant difference between Simpson and Shannon indexes(P>0.05);Compared with the control group,the addition of Fermented Chinese herbal medicine in the diet had no significant difference in the level of phylum,family and genus of colon and cecum microorganisms of weaned piglets(P>0.05);(7)Compared with the control group,the addition of Fermented Chinese herbal medicine in the diet had no significant difference in the concentrations of acetic acid,propionic acid,valeric acid and isobutyric acid in the colonic Chyme of weaned piglets(P>0.05).The concentration of isovaleric acid in the colon of the 5 kg/t addition group was significantly higher than that of the control group and 3 kg/t addition group(P<0.05),and the concentration of butyric acid was significantly lower than that of the control group and 3 kg/t addition group(P<0.05).Compared with the control group,the Fermented Chinese herbal medicine group had no significant difference in the concentration of acetic acid,propionic acid,butyric acid,isobutyric acid,isovaleric acid and valeric acid in cecal Chyme of weaned piglets(P>0.05).In conclusion,the Fermented Chinese herbal medicine "Tikangtai" can improve the average daily feed intake and average daily gain of weaned piglets,improve the apparent digestibility of crude protein in the diet,promote the secretion of digestive enzymes,reduce intestinal toxins,reduce intestinal permeability,change gut microbiota diversity,regulate the content of intestinal short chain fatty acids,promote intestinal health,and then improve the growth performance of weaned piglets.Under the experimental conditions,there was no significant difference between the addition of 3 kg/t and 5 kg/t Fermented Chinese herbal medicine in the diet of weaned piglets. |
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