In tropical countries, dairy animals appear to confront with prolong high ambient temperature (HTa) condition during summer. It was well accepted that goat fed under HTa has different mechanisms and tolerance when compare with cattle. Specifically, the small ruminant tends to use panting rather than sweating as large ruminant (6). Additionally, dairy cows and goats during HTa decreased dry matter intake (DMI) and increased water intake (5,8,9). However, dairy animals supplement with high dietary cation and anion (DCAD) increased both water intake and DMI (2,13) and the comparable responses has also demonstrated in dairy cattle fed under mild degree HTa (11). Dairy animals exposed to heat stress changed the meal patterns by increasing meal frequency, smaller meal size in dairy cows (10) and longer eating time in dairy goats (1). Because dairy goat is different from dairy cattle in term of the responses to HTa, the present experiment aimed to investigate the potential effects of high DCAD on DMI and meal patterns. It hypothesizes that dairy goats fed with high DCAD diets change DMI and meal pattern under high ambient temperature.