Effect of the Dietary Energy Concentration on the Digestion and Metabolism in the Sika Deer Rumen

In a [HT5SS]4×3 latin square experiment design,four adult sika deer fitted with rumen fistulas were fed with three supplement feeds with different energy levels.The pH value,concentrations of NH 3 N,TCA P recipitated protein and total VFA in the rumen were determined.The dynamic variations of the four metabolic parameters and proportions of VFA were measured respectively.The main experimental results were as follows: The pH value and NH 3 N,TVFA concentrations of rumen were not significantly influenced by dietary energy levels( P 0 05);The dietary energy levels had a marked effect on the TCA P concentration in the rumen and the feed intake of silage for deer( P 0 01).The TCA P concentration increased with dietary energy level increase;The results of VFA analyses indicated that the proportions of VFA varied in different groups.