The Collaborative International Dictionary of English v.0.48:

Beeves \Beeves\ (b[=e]vz), n.
   plural of Beef, the animal.
   [1913 Webster]

Easton's 1897 Bible Dictionary:

Beeves
   (an old English plural of the word beef), a name applicable to
   all ruminating animals except camels, and especially to the
   Bovidce, or horned cattle (Lev. 22:19, 21; Num. 31:28, 30, 33,
   38, 44).