Suggestions for extras -what you already are giving Mad Goatwoman of Madeley - also high quality forage, extra veg, alfalfa dried grass products,some kale, whole neeps(swedes) my goats love them and do milk well with them, flaked peas have heard some people add "spoonful" linseed / veg oil, linseed flakes. some add extra soya. Then theres the goat that turns up her nose " I don't like that". You have to be careful their overall concentrate ration not over 18 % protein as risk of laminitis. Us smaller goatkeepers pic and mix what's available that suits our goats best. What works for one doesn't necessary work for others. I milk record and through the winter milkers running through have a more consistent diet of hay and I can try different things to see if it makes a difference to yield and butterfats (although there's a lot of other variables that affect that.) I have found it does, even with the same product, different manufacturers! My husband asked me to try them with molasses if that would help yield as he gets for sheep in lamb -prevents twin lamb, but thought he could get more after lambed while waiting on grass to grow- no difference with the goats. Got neeps instead.