| Probiotics is a safe, effective, and do not pollute the environment, non-drug-resistant, non-toxic side effects and no residues, and other advantages of a new type green additive, has gradually become the substitute of antibiotics, is currently the research hotspots at home and abroad. Large studies have shown that lactic acid bacterium, Bacillus produces organic acids and their metabolites can activate immune cells, enhance the body immunity, and inhibition of pathogenic bacteria; Of yeast culture on nutrient-rich, can increase the body’s immunity, promote the breeding of beneficial bacteria, inhibit the growth of pathogenic bacteria, and on prevention and treatment of animal diseases of the digestive system play a useful role. The selection of tests for immunity with enhanced effect of Bacillus subtilis, lactobacillus acidophilus, lactobacillus plantarum, beer yeast and Candida utilis made of compound microecological mainly verify its effect on the level of antibodies to classical swine fever in weaned piglets, for the research and development of micro-ecological agent and its application in swine industry providing a scientific basis.This test of Bacillus subtilis, lactobacillus acidophilus, lactobacillus plantarum, beer yeast and Candida utilis as test-producing strains, using solid-liquid mixed fermentation preparation of compound probiotics.131weaning piglets will be according to the date of birth, birth order, divided into a control group and group of varieties, which controlled set of7bar, a total of57; contrasts9bar, a total of74. In the feeding test, contrasts pig of Foundation day grain in the added10-15g of composite micro-ecological preparations, test continued4months, records weaning piglet head are feed intake volume, and average day feed intake volume, and early heavy, and last weight, and head are increased heavy, and average day increased heavy, and total consumption material volume, and material heavy than, and mortality and diarrhea rate, and in piglet60day age and test end blood, for classical swine fever antibody effect price determination.Test results indicate that the compound probiotics on weaning piglet growth rate and effects of classical swine fever antibody level significantly. Contrasts, head weight at the end of the pig, the average daily gain and feed weight ratio, higher than the control group (P<0.01), Group and the control group’s average daily feed intake, headers, intake and total feed intake of the difference is not significant (P>0.05). Contrasts of weaned piglet mortality and diarrhea rate is lower than the control group (P<0.01). Detection of classical swine fever antibody level after two blood group than the control group (P<0.05). |