Abstract
The mobile bag technique has been employed to study the small intestinal digestibility of feed components in ruminants and total tract digestibility values in pigs. This study reports some preliminary investigations on the use of mobile bags to estimate both total and partial tract digestibility values in ponies.Four caecally fistulated Welsh cross pony geldings (approx LW 250 kg) were offered ad libitum grass hay (DM: 918, CP: 73, NDF: 716) plus 30 g/h/d of a horse mineral supplement. Mobile bags were prepared from monofilament polyester mesh with a pore size of 41 um using a commercial heat sealer and were used to estimate the feed constituent digestibility of a commercial horse concentrate (DM: 918, CP: 151, NDF: 403) in both the total tract and post-ileal segments of the ponies digestive tract.
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