In a piggery

• Penned up
• Like a pig in a pen
• Housed in a pen
• Kept in a pen
• Kept in a pigpen
• Housed like a pig
• Penned, as a pig
• Cooped up like pigs
• Penned, as pigs

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Sty \Sty\, v. t. [imp. & p. p. Stied ; p. pr. & vb. n. Stying .] To shut up in, or as in, a sty. --Shak.