They then took the motorbike to the stock yard, where they mustered up about 20 sheep, then killed two ewes.
The ewes were each pregnant with twins, Mr Butler said.
Police arrived while Work was putting the carcasses away. He told them he was "only taking two sheep for meat. One for me and one for my friend."
He pleaded guilty in court to burglary and unlawfully converting a motorcycle.
Defence lawyer Stephen Ross said his client was now working at a chicken farm.
Judge Philip Crayton remanded Work for sentencing on October 12.