"供食肉类的牲口" can be translated into English as "livestock raised for meat" or more simply "meat livestock".
Here are some example sentences to illustrate the usage:
The farm specializes in raising meat livestock for the local market.
(这家农场专门为当地市场饲养供食肉类的牲口。)
The regulations cover the welfare of all meat livestock, from birth to slaughter.
(这些法规涵盖了所有供食肉类的牲口从出生到屠宰的福利。)