Abstract
Hernandez SD, Cobos PMA. Tec Pecu Mex 2001,39(3)229-236. With the objective of comparing microbial activity in different sections of caecum and colon, pH, in vitro DM digestibility, total and cellulolytic bacterial concentrations were determinated. Ten New Zeland White rabbits with average age of 70 days were used. Samples were obtained from: 1) cecal appendix (CA), 2) thirteenth cecal segment (TCS), and 3) distal colon section (DCS). The pH of CA was highest (P<0.05) than in TCS and DCS (7.3, 6.3 and 6.3). IVDMD was highest (P<0.05) in AC than in TCS and DCS (56.0, 38.7 and 33.4 %). Total bacterial concen tration was not different between CA and DCS, but lower in TCS (1.1x1012, 1.6x1012 and 3.2x1010). Cellulytic bacterial concentration was remarkable highest (P<0.05) in CA than in TCS and DCS (9x107, 4x104 and 4x102). It is concluded that DCS is not representative of cecal-bacterial activity and concentration and IVDMD in CA, it is suggested that studies related with factors affecting cecal microorganisms must consider cecal appendix samples.
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