As part of the 2006 spring growth trials performed at the Massey University research farms the rumens of 6 calves per group were analysed to see whether addition of QoC to the diet was effecting rumen development.

More efficient rumens. Calves fed 4L of milk per day with QoC had significantly wider papillae in their rumens than calves fed milk alone, as demonstrated in the graph below. The papillae also appear to be longer. A rumen with increased papillae length and width is more efficient as it provides more surface area for microbial fermentation of ingested dry matter and nutrient absorption.