The invention provides a natural
plant feed additive for protecting livers and kidneys of
livestock and poultry and a preparation method, and relates to the field of feed additives, the
feed additive is prepared from
centella asiatica,
penthorum chinense pursh, felwort,
phyllanthus urinaria, purpleflower holly fruit,
isatis root,
polyporus umbellatus, pericarpium arecae,
uncaria,
cyrtomium fortunei,
talc, cortex acanthopanacis and
cassia twig. Experimental data show that the
feed additive can significantly inhibit the activities of ALT, AST and ALP in serum, reduce the level of TBIL, enhance the activities of SOD and GSH-Px, recover T-AOC and reduce the generation amount of MDA, so that the multi-dimensional liver protection function of laying hens with
acute liver injury is realized; meanwhile, the feed additive can significantly improve the average daily
gain of the fattening pigs, reduce the feed-
gain ratio, reduce the activity of ALT and AST, increase the content of TP and ALB, and achieve a multi-target comprehensive physiological regulation effect; in addition, the difference between the serum BUN content and the serum Cr content of each group of fattening pigs has no
statistical significance, it is proved that the fattening pigs have no risk of renal dysfunction, and a new solution is provided for developing green and efficient functional feed additives.