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机译:Life cycle efficiency of beef production: IX. Relationship between residual feed intake of heifers and cow efficiency ratios based on harvest, carcass, and wholesale cut weight outputs
Ohio State Univ, Dept Anim Sci, Columbus, OH 43210 USA;
Missouri State Univ, Darr Coll Agr, Springfield, MO 65897 USA;
Univ Wisconsin, Dept Anim Sci, Madison, WI 53706 USAARS, USDA, US Meat Anim Res Ctr, Clay Ctr, NE 68933 USA;
cattle; feed efficiency; lifetime production; residual feed intake; residual gain;