RESUMO
Background: Escherichia coli infection is one of the major diarrheal diseases resulting in the loss of pigs at a young age. Aim: This research investigated the antimicrobial activity of Caesalpinia sappan wood extract against E. coli infection as an antibiotic replacement. Methods: E. coli was cultured from diarrheal piglets and then used to find the minimal inhibition concentration (MIC). Caesalpinia sappan wood extract (500 mg/kg) was used for the treatment of diarrheal piglets compared to antibiotics (enrofloxacin 5 mg/kg) by oral administration. Another three groups of diarrheal piglets were used supplemented feed with 1% and 2% extract compared with commercial feed. Subsequently, E. coli enumeration, fecal shape, fecal color, and growth rate were recorded from day 1 to 7. Results: Based on the results, C. sappan wood extract could inhibit E. coli growth at a MIC of 16-34 mg/ml. The number of colonies did not significantly differ between C. sappan wood extract and enrofloxacin treatment groups. A supplemented feed with 1% and 2% C. sappan wood extract could improve the fecal shape and fecal score compared to the control group, albeit only in suckling pigs. There were significant differences from the control group on days 4, 5, 6, and 7 (p < 0.05). However, the average daily gain did not significantly differ among the three groups. Conclusion: The results indicate that C. sappan wood extract could improve diarrheal signs in suckling pigs and can be used as a replacement for antibiotics for organic pig production.
