Animal and treatmentTwenty-four 4 wk-old crossbred (Landrace×Duroc) weanling pigs with both sexes in equal numbers (initial body weight approximately 9.52±0.48kg) were randomly allotted into one of two groups; control (basal diets, as listed in Table 1) and chromium propionate groups (diet supplemented with 200 µg kg -1 (ppb) of chromium propionate) (Kemin Industry, Singapo).The pigs were housed in four pens in an environmental nursery.Feed and water were provided ad libitum.This experiment was conducted for 9 weeks.The animals used in this experiment were cared for under the guidelines stated in the Guide for
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Lien et al. (2005) studied this question.