The most common and most likely answer to this crossword clue is the 6 plus 9 letter word ANIMAL HUSBANDRY
A
N
I
M
A
L
H
U
S
B
A
N
D
R
Y
More clues leading to the result ANIMAL HUSBANDRY
Buddy explains!
The straight part
We know that "Raising stock" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case raising stock = animal husbandry.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.