Effects of sulfur, phosphorus, Cobalt and urea on rumen fermentation were studied using Artificial Rumen.

The effects of yeast culture (Saccharomyces cerevisiae) supplementation on ruminal fermentation were investigated in this study using an artificial rumen device in a random design experiment.

General methods for studies on primate diet at home and abroad mainly include direct observation, fecal analysis, artificial feeding, contents in stomach analysis and rumen analysis.