The effect of freezing and pasteurizing bovine milk on its ability to protect neonatal guinea-pigs against colonization of the small intestine by Escherichia coli.

摘要: The ability of frequent feeding bovine milk diets to prevent the colonization small intestines newborn guinea-pigs with orally inoculated Escherichia coli was tested. At 3--4 days intestinal samples from suckled controls were frequently sterile or colonized only very low numbers Esch. coli. No diet exhibited a significant "protective" effect but could, however, be ranged in order effectiveness decreasing by Raw, fresh best, followed pasteurized at 56 degrees 63 degrees, then boiled milk; frozen worst. Because this last finding, neither bacteriostatic lactoferrin-dependent activity nor lactoperoxidase could correlated decrease