Studies on the Composition of the Ruminal Flora and Fauna of Young Calves

Abstract

A study was made o the bacteria and protozoa present in the rumen of three calves from 1 to 13 wk. of age, raised under normal conditions. Ciliate protozoa were not established in these calves. A study of older calves in contact with mature animals after 13 wk. of age indicated that entodinia were first established, followed by diplodinia and holotrichs.