Feeding of piglets in post weaning with diets without microbian additives, with garlic (Allium sativum, L.) or colistin.

摘要

This study was conducted to evaluate piglet performance, ranging from 35 to 62 days of age, fed diets containing garlic and colistin. A total of 96 piglets were distributed into four treatment groups in a complete randomized block design. The treatment groups were the following: (DC) control diet, without antimicrobials; (D2) DC+0.05% of powder garlic; (D3) DC+0.15% of powder garlic; and (D4) DC+0.25% of colistin sulfate. Feed intake was 16.2% higher (P<0.05) for animals fed with the diets containing colistin compared to animals fed the diet containing 0.05% of powder garlic. There were no differences in animal performance when pigs were fed with diets containing 0.25% of colistin, 0.15% of powder garlic and the control diet. Weight gain was higher (P<0.05) for animals fed diets with colistin. There was no difference in weight gain between animals fed with diets without or with garlic. Piglets fed with garlic diets had 7% worse feed conversion (P>0.05) than animals fed diets with colistin. In conclusion, diets without antimicrobial or with powder garlic can not replace diets with colistin sulfate when fed to piglets during the postweaning phase.