Fig. 4

Dietary yeast hydrolysate supplementation attenuated the effects of LPS-injection on jejunal permeability and morphology. A Representative picture of the appearance of the intestinal tract of a piglet. B Hematoxylin and eosin section of jejunum at 40 times magnification (up) and 100 times magnification (down). C The concentrations of diamine oxidase (DAO) in serum of piglets. D–F The villus height, crypt depth and the villus height:crypt depth ratio of jejunum of piglets. Control, piglets were fed with a basal diet; YH, piglets were fed with a YH containing diet, 5 g/kg. ^a,b,cMeans with different superscript letters in a row were significantly different (P < 0.05)