Tropentag, October 7 - 9, 2008 in Hohenheim "Competition for Resources in a Changing World: New Drive for Rural Development"

Number of Salmonella spp. in Feces of Weaned Pigs supplemented Betel Vine in Diet

¹Chiang Mai University, Department of Animal Science, Thailand
²Chiang Mai University, Department of Veterinary Public Health, Thailand
³Chiang Mai University, Department of Veterinary Preclinical Science, Thailand
⁴Georg-August-Universität Göttingen, Institute of Animal Physiology and Animal Nutrition, Germany

Abstract

Salmonella spp. in feces of sixty cross bred weaned pigs at 28 days was counted by most probable number technique (MPN) at day 0 and 35 of the experiment. The pigs were randomly divided into six groups for dietary treatments in a completely randomised design; control basal diet, basal diet with tylosin 500 g/100 kg, basal diet with standard eugenol 7.5 ml/100 kg (standard eugenol 3.906 µl/1 kg bw /day ;10 times of standard eugenol MIC), crude extracted 30 ml, 50 g fresh and 3.7 g dry betel vine leaf/100 kg basal diet (eugenol 0.0154 µl/1 kg bw/day;10 times of eugenol in crude extracted betel vine leaf MIC). The results showed 90, 70, 60, 50, 50, and 60 % of the pigs had Salmonella spp. on day 0 (p > 0.05) then reduce to 50, 44.4, 25, 30, 40, and 33.3 % on day 35, respectively (p > 0.05). No significant different in the number of Salmonella spp. on day 35 between the groups (p > 0.05). Comparison of Salmonella spp.on day 0 and 35 within the group showed the reduction of Salmonella spp. However, only feeding the pigs with tylosin showed significant different (p < 0.05). There were no significant differences in body weight at day 0 and 35 and average daily gain (ADG) between the treatment groups. Therefore, this study showed that standard eugenol, crude extracted, fresh and dry betel vine leaf can be supplemented in weaned pig diets to reduce the number of Salmonella spp. in the feces and discharge into the environment. For more efficiency, we suggest to increase the concentration of eugenol in pig diet more than 10 times of MIC.

Keywords: Betel vine, eugenol, Salmonella spp., weaned pig

Contact Address: Nucha Simasatikul, Chiang Mai University, Department of Animal Science, Haui-Keaw Road, 50200 Chiang Mai, Thailand, e-mail: agahi001chiangmai.ac.th