Humorous:
* Husky-Moo: A play on the cow's "moo" sound.
* Barnyard Howler: A general term for any animal with a deep, rough voice.
* Wooly Woofer: For a sheep with a husky voice.
More descriptive:
* Deep-voiced farm animal
* The farm animal with the husky bark (if it sounds like a bark)
Ultimately, the best name depends on the context and how you want to use it!