Age old question but... feeding advice please x

[ahlam1399]

I am asking this as there are always new products out and I will certainly have missed them. Recommendations please for something to add to my ISH gelding's feed for a bit of weight and condition. Currently on mix, top spec condition cubes, chaff and sunflower oil. Looks well but I would prefer a bit more weight on him. Stands in in the day in this heat with ad lib haylage. Must not be in any way heating as can be spooky.Thank you in advance.

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