Two experiments were conducted to determine the response of pig to different vitamin and mineral levels as well as electrolyte balance in diet. In experiment 1, a total of 120 crossed fattener pigs D (YL) at 60 day old was selected and divided into 2 treatments, 4 pens per treatment and 15 pig per pen by a completely randomized design. In treatment 1, vitamins was supplied to diet as NRC (2012) recommendation (+ 100 percent vitamin)
in treatment 2 vitamin was two times compared with treatment 1 (+ 200 percent vitamin). In experiment 2, a total of 240 crossed fattener pigs D(YL) at 60 day old was selected and divided into 4 treatments, 4 pens per treatment and 15 pig per pen followed a factorial design with 2 factors of dietary electrolyte balance (2 levels of with and without dietary electrolyte balance) and mineral, vitamin levels in diet (2 levels of 100 percent vitamin + 100 percent mineral and 200 percent vitamin + 150 percent mineral). Pigs in each treatment for both experiments were selected in the same breed, sex, initial weight and take care conditions. Diet nutrient density of energy, amino acids met NRC (2012) recommendation and similar to treatments. Feed fed ad libitum as mash form, drinking water provided by nipple automatically. The results showed that incrieasing 150 percent trace minerals and 200 percent vitamin levels in the diet compared to NRC (2012) recommendation had improved 2-7 percent weight gain, feed efficiency but did not change meat quality of pigs. The effect of high level of trace mineral and vitamin in diet was higher for growing than finishing pig. Dietary electrolyte balance was only effective on improving pig performance when increased level of mineral and vitamin in diet.