Abstract:

The antibacterial peptide has the broad spectrum antibacterial activity which in the organism to induce and express the micromolecule peptides. These peptides are the organism non-specific immunological response products, and they are the important ingredient in the immunity system of organism.At present the research of swine antibacterial peptides mainly to aim directly at swine intestine and blood in domestic. In domestic they also mainly have progressed the reseach about swine intestine, Although the study on the abstraction and antibacterial activity of swine blood has been few reported, in domestic has not actually seen the report about it.because of among the swine blood the white blood cell excute archfunction in the immunity system,at the same time the neutrophile granulocyte have approximately composes 70% of the quantity in white blood cell, and it is reasonable that abstract swine antibacterial peptide from blood. So the experiment abstract micromolecule peptides in neutrophil of fresh swine blood, according the active characteristic of micromolecule peptides to abstracte and identificate the antibacterial peptides. Meanwhile through grading-up extraction artwork, elevating yield and content of antibacterial peptides.