My 7 yr old part bred Arab drops weight too easily. She's a fuss bag too...
This year, we've avoided weight loss [and in turn, the best tantrums you ever did see]
I feed Agrobs Muesli, Honeychop alfalfa with herbs, Thunderbrooks base mix and in the mornings, I give half a round scoop of ready mash extra [red bag by rowan barbury]
The mash doesn't 'hype' her up and she's a complete and utter drama queen. I wouldn't feed it to her if it caused explosive behaviour.
The beauty of the Agrobs is it's all fibre [forage] and keeps the stomach and gut in tip top condition.
The Honeychop has no added sugar and also promotes a healthy gut as well as encouraging salivation and chewing [which is key to a sane horse]
The base mix covers the 'missed' nutrients from the muesli and chop
The ready mash extra just keeps the weight on. It isn't heating, can be fed with hot or cold [my girly adores her hot breakfast] and will tempt even the fussiest of eaters
If you want to ask any questions, feel free to message me x