Weaning of pigs: duodenal myoelectrical activity during the change from sow's milk to solid feed

Abstract

Duodenal electromyography (emg) was studied in conscious piglets during the suckling and postweaning period. In suckling piglets, emg showed regular, repeating migrating myoelectric complex (MMC) cycles, each of which was composed of the classical phases I, II and III. During the early postweaning period (1-10 days) feeding with solid feed influenced the duodenal emg. The duration of phase I after weaning was significantly shorter than that before weaning (3.3 vs. 10.6 min, P<0.01), representing a decrease in duration from 14.6 to 4.6% of the whole MMC (P<0.01). On the other hand, phase II increased from 79.9 to 89.6% (P<0.01) after the change in diet. Feeding sow's milk did not disrupt the MMC pattern, however voluntary feed intake of solid feed induced continuous spiking activity of the duodenum for a period of 124 min.

Telemetry Facilitates Long‐Term Recording of Gastrointestinal Myoelectrical Activity in Pigs

“…In experimented pigs, the EMG signal could be recorded for 4-5 weeks. The spiking activity recorded by means of the telemetry system was similar to that obtained with the wire method in pigs of the same age and body weight (Ruckebush & Bueno, 1976;Le sniewska et al 1998; R. Zabielski & U. Gacsalyi, unpublished observations).…”

Development and regulation of pancreatic juice secretion in cattle. State-of-the-art

“…These findings agree with our results showing that the PPS and MMC persist following feeding in ruminating calves. Thus in cattle, regardless of age, MMC and PPS are actively involved in the digestive processes, similar to that occurring in pigs fed ad libitum Lesniewska et al, 1998), whereas in dogs MMC and PPS appear to play the role of a "housekeeper", important only during the interdigestive period.…”