I have a gelding that has been a bit on the lazy side since I got him last year. As his workload has increased this year he has continued to be lazy, despite training. I am about to do a vet workup, so brainstorming possibilities and what to check for first.
Details: 2013 warmblood gelding (gelded early 2016), grew up being handled, but mostly out in a field with other young horses. In May 2016 I purchased him and spent the summer slowly working with him (along with a trainer experienced in starting young horses) on the ground and in the fall we were able to have maybe two-dozen short rides before the drought broke and we had torrential rain for much of the winter. Even in his first rides with the trainer, he was hard to get to trot or canter and quickly stopped.
This spring we started riding again with gradually increased complexity, adding in figures, tiny bits of shoulder in, leg yield and turn on forehand along with lots of transitions between and within gaits. Being young, he has a short attention span, so we change things up a lot and don’t drill exercises. We have mixed in other activities like trails, poles, even a bit of tiny jumping. Nothing gets this horse forward. He knows the aids for W-T-C, and even though we have diligently ridden with the “if he doesn’t respond when you whisper, shout” approach, it is still WORK to get him forward. He doesn’t act up much, and when he does, it is very brief - a buck or two, then it is like he decides it isn’t worth the effort. He has an older Custom Saddle, adjusted by a very good independent fitter, and he is equally lazy when working him on the lunge - with or without tack. He takes regular naps - laying down for a long nap each morning. Even in turnout, with plenty of room to run, he doesn’t do much usually.
He gets a mix of bermuda and alfalfa twice a day. We tried more alfalfa, but he just got pudgy. He also gets 1 lb TC30 ration balancer, ~1/2 lb beet pulp dry weight, 1/2 c flax seed and Nu-Hoof Maximizer, which has AAs, biotin, copper, zinc. He drinks plenty, has a salt block and is in good weight, shiny coat, outwardly healthy. He’s barefoot and gets regular trims, plus regular dental, vacc, etc. Keep in mind I’m in San Diego; he is in a 24x24 corral with either turnout or lunge or ride each day - typical for our area. Usually he gets one lunge, 2 days off (turnout) and 4 rides split between trainer and I each week. Often if the trainer works him during the day, I will still get him out and groom him and hand walk him for a bit that evening.
Since a concerted effort to address this via training has only gotten modest improvement, I am planning on getting a vet workup to see if he has some underlying physiological issue we could address. Probably blood tests - CBC/chem, maybe test for thyroid. What else might it be worth testing for?