Buck out of the norm

[Lurch1]

My NZW buck is acting weird. He has elevated/ laboured respirations and is not really hoping all that well. When he moves he only moves his hind legs a touch. I examined him and also noticed that his testicles have retracted. He is a little over a year. I left him and doe in the same cage for 24 hrs a couple days ago, but didn't really notice anything. I also just switched his feed to the scratch that I feed my chickens. Any ideas?

 

[Cindiloohoo]

Change his feed back to rabbit feed. I'd say it is likely something in or not in the feed that has made him have this reaction.