Abstract: This study was conducted at the Botswana College of agriculture Content Farm in Gaborone for a period of 90 days. Three groups of 18 Tswana bucks in a group of six each, designated A, B, C of almost the same age and weight were used. Group A bucks were fed Dolichos lablab (as a supplement) and Veldt grass (as basal diet) at a ratio 60:40 and water at adlibitum. Group B were fed as Group A with an addition of common salt (Sodium Chloride- NaCl) and Group C were also fed as Group A with an addition of a mixture of Dicalcium phosphate and common salt at a ratio of 1:1. The water, veldt grass and dolichos lablab leftovers were weighed daily and the mineral supplements weighed every two days, then all the consumed ration was calculated. The bucks were weighed fortnightly. The results showed that mineral supplementation had influenced the production of Tswana bucks as there was an improved weight gains on goats fed mineral supplements.