How much weight can a boer meat goat gain daily?

A boer goat will eat up to 4% of it's body weight each day. For a goat that weighs 100 lbs that would eat up to 4 lbs each day. But your question is need to eat. That depends on what the goat is eating. If the nutrient levels of the food the goat is eating are high enough they can survive on less than 4% per day. If the nutrient levels are low then they could also suffer on 4%. The nutrient level required depends on what you are trying to accomplish with the goat. If it is a mature goat that is not lactating (nursing babies) then the nutrient requirements are lower than for a goat that is lactating. Also, goat kids that you are trying to grow will need higher nutrition than older goats. You should visit with your local extension service to get more details.