Zeigler Rodent Diet is formulated to provide the nutrients required for growth and maintenance by rat and mouse colonies maintained in conventional environments. Manufactured in accordance with the same exacting standards as Zeigler’s “open formula” research feeds, which are used for biomedical research at the NIH, FDA, NTP, and other reknowned research facilities, the Zeigler 16-6 Rodent provides optimal nutrition and quality at a reasonable cost.