Abstract: In this experiment five native male goats fitted with gastrointestine electrodes and a strain gauge were used to study the effect of clenbuterol on the gastrointestine electric activities and rumen movements. The results showed that compared with the control period, after injecting clenbuterol subcutandously, the amplitude of the fast wave potentials and slow wave potentials at the duodenal close to abomasum, the pylorus of abomasum and dorsal sac of the rumen, as well as the strainwave of rumen movements showed a striking decrease, respectively (p<0.01), but there was no noticeable change in their frequencies. Clenbuterol also greatly inhibited the electric activities and movements of the duodenal in vitro (p<0.05). The above results showed that clenbuterol had a direct and indirect inhibitory effect on the gastrointestine electric activities and movements of goats.

Key words: Gastrointestine electricity, Rumen movement, Clenbuterol, Goat