The ideal meat-type beef animal is between (1) our current standards that result in some carcasses with excess fat and (2) an animal that produces a carcass of only lean meat - with no fat and no marbling.
Rust, Robert E.
"What Is a Meat-Type Steer?,"
Iowa Farm Science: Vol. 17
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol17/iss4/2