He said Hanson had been associating with the wrong crowd who encouraged his offending.
Judge Ross said it needed to be made clear this type of offending was distasteful, especially in a rural community, and needed to be deterred.
He said there was no excuse for killing the animals, which had included a pet lamb.
A pre-sentencing report stated Hanson was driven by the company of others but had accepted the "wrongness" of the crime.
He also faced one charge of possession of cannabis and received nine months supervision.
He was ordered to undergo a drug and alcohol assessment and adhere to any consequences pending its outcome.
Hanson was also convicted for the theft of one goat and was disqualified from driving for three months because a motor vehicle was involved in the offending.
He was ordered to pay $680 in reparations.
His co-offenders are making their way through the court system.