Here is a summary of what my gelding eats - i could not see the brand on your list Step 8 (hiPro) - this is a high fat/low sugar extruded grain. He eats 2 Lts about5 times/week after I work him. When he is in full work he will come in doors over night and get 2 feeds a day but for now he is on pasture so supplements/hard feed only given by me when I am out. He is on pasture so has free range of grass. Grass hay and grass mixed with alfalfa hay is given 4x per day free choice (usually 3-4 flakes per feed) He gets Omneity Pellets - 2 scoops 5 times/week I am looking to add Spirulina to his diet as he has had some reaction to the seasonal pollen which is bad this year. He has a white discharge in his nose and the odd mild cough. No temperature or other symptoms so I feel it may be allergen/pollen (vet will be coming out to see in a few weeks if nose discharge doesnt go away) I purchased my gelding in May 2022 so have only had him for 2 months. He is 17 hands and growing. Weight is normal for growing/large horse. You can feel ribs easily but not easily visible. Developing top line. Good feet quality. Manure is a bit loose and has stayed this way so far. Location - Alberta. Hay analysis has not been done.