Effects of an Aspergillus niger fermentation product and yeast mannan-rich fraction on dairy calf performance and rumen development

This dataset is the primary data collected from an in vivo experiment to measure the effects of the dietary inclusion of a fermentation product of Aspergillus niger, alone, or in combination with the mannan-rich fraction of Saccharomyces cerevisiae cell walls, on health, growth, feed intake and rumen variables in thirty Holstein-Friesian bull calves over a 70 d trial.