"I want you to feed the owl", jIjatlh vIneH, vaj mu'tlhegh veb vIqon:

{lIr yIje' vIneH}

lugh'a' ?

No. The correct sentence would be lIr Daje' vIneH. Imperatives do not work as the first sentence of a sentence-as-object construction.

sao mojtaHvIS ra'meH mu'tlhegh, taQchoHlaw' vay', 'a vay'vam
vIngu'laHbe'.

You're thinking of it as a command, but it's not a command. It's a statement of fact about what you want. As we learn in Klingon for the Galactic Traveler, a Klingon will "never [use] an indirect expression when a blunt one will do." If your purpose is to get me to feed the bird, use an imperative. What you want is irrelevant.

DaH, jISov.. chaq jatlhqang vay': qatlh {lIr yIje'} neH Daqonbe''a' ?
'a latlh mu'tlheghmey vIqonlaHbogh 'oHbe' QIn tlheghvam meq'e'. sao
ra'meH mu'tlheghmey je 'oH QIn tlheghvam meq'e'.

That's unfortunate, because the correct answer is, in fact, to say lIr yIje'.

But the answer to your larger question is that you can't use imperatives as the first sentence of a sentence-as-object construction.

-- 
SuStel
http://trimboli.name