DISCUSSION
Animal feces is an one important origin of food infection, therefore study on this subject is very important and attractive to determine the origin infection in food and in ice cream. In one study by Wilson and et al. [15] stated that to distinguish of human and animals fecal infection needs collection of diagnostic methods which is expensive and take much time. They added that if the ratio of fecal coliforms to fecal streptococci is more than total of enumerated coliforms infection with human feces has been occurred.