The rats were fed on the each feed contained 0, 1%, 3%, 5%, 10% dietary fiber and 10 ～300mg strontium. These researches were studied that the taking of dietary fiber wereaffected the gastrointestinal transit time, the percentage of water content in feces, thequantity of short chain fatty acids in serum. The increasing weights of air dried feces wereaccompanied with increasing dietary fiber in diet. The quantity of short chain fatty acids inserum was increased in case of feed contained over 5% dietary fiber in diet
