共 18 条
- [11] PIERSON DC, 1971, J ANIM SCI, V33, P296
- [12] Rook J. A., 1974, South Dakota Farm and Home Research, V25, P7
- [13] SMITH LW, 1971, P INT S LIVESTOCK WA, P314
- [14] SUTTON AL, 1968, J ANIM SCI, V27, P1177
- [15] THOMAS JW, 1972, J ANIM SCI, V35, P1115
- [16] VANSOEST PJ, 1965, J ASSOC OFF AGR CHEM, V48, P785
- [17] WIERINGA G. W., 1961, NETHERLANDS JOUR AGRIC SCI, V9, P210
- [18] [No title captured]