Raise new breed of ram (5)
I believe the answer is:
aries
'breed of ram' is the definition.
'aries' can be an answer for 'ram' (I have seen 'The Ram ' mean 'aries' so perhaps 'ram' could also mean 'aries'). I'm unsure of the 'breed of' bit.
'raise new' is the wordplay.
'new' is an anagram indicator.
'raise' with letters rearranged gives 'ARIES'.
Can you help me to learn more?
(Other definitions for aries that I've seen before include "Constellation with sign of the ram" , "House" , "Sheep" , "Philip -, English poet" , "Zodiac ram" .)