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 Table 3

 Performance Data of Growing Beef Calves Receiving Six Different
 Cool-Season Feeding Regimes in Northwest Florida (1973-74)

Item II(a) II(b) III(c) IV(d) V(e) VI(f)
Initial no. of animals 15(g)(h) 16(g) 16(g) 16(g) 16(g) 16(g)
Length of trial, days 161 161 161 161 161 161
Avg initial wt., lb. 376 371 367 371 367 372
Avg final wt., lb. 654 676 660 662 705 650
Avg gain/animal, lb. 278 305 293 291 338 278
Avg daily gain, lb. 1.73b** 1.89a,b J..82b 1.81b 2.10a 1.72
Gain/acre, lb. ----- 590 524 534 695 740
Animal days/acre ------ 312 288 295 331 428
Stocking rate/acre(i) ----- 1.94 1.79 1.83 2.06 2.6(
Gain/acre/day, lb. ------ 3.67 3.26 3.31 4.33 4.6C
Feed/cwt. gain(j)
 Corn silage 1837 ------ --- ---- 793
 Concentrate supplement 97 ---- --- --- ---- ---
 Pasture supplemental ration ---- ---- ---- --- 250 ---
Feed/animal/day(j)
 Corn silage 31.7 --- -- ---- --- 13.7
 Concentrate supplement 1.7 ---- ---- -- -- --
 Pasture supplemental ration ---- ---- ---- ---- 5.3 ---
 (a) Treatment I corn silage (95%) + concentrate supplement (protein, mineral,
 vitamin) (5%) in drylot.
 (b) Treatment II rotational grazing of a triticale, ryegrass, and crimson clover
 mixture (unsupplemented)---three applications of 100 1l./acre each of ammonium
 nitrate during the grazing season.
 (c) Treatment III rotational grazing of a triticale, ryegrass, and crimson
 clover mixture (unsupplemented)---one application of sulfur-coated urea equi-
 valent to 300 1b./acre of amnonium nitrate.
 (d) Treatment IV rotational grazing of a triticale ryegrass, and crimson
 clover mixture (unsupplemented)---three applications of 200 lb./acre each of
 ammonium nitrate during the grazing season.
 (e) Treatment V rotational grazing of a triticale, ryegrass, and crimson clover
 mixture (supplemented with a 12% crude protein high-energy ration at the level
 of 1% of body weight)---three applications of 100 IL./acre each of ammonium
 nitrate during the grazing season.
 (f) Treatment VI rotational grazing of a triticale, ryegrass, and crimson clover
 mixture (supplemented with corn silage fed ad libitum)---three applications of
 100 lb./acre each of ammonium nitrate during the grazing season.
 (g) Initially, two groups of eight steer calves each.
 (h) One calf was removed from experiment due to sickness; the data for that
 animal were eliminated.
 (i) Additional test animals were added and removed as needed to keep the forage
 uniformly grazed. In all cases individual animal weights were taken after an
 overnight shrink (fast from feed and water).
 (j) Does not include pasture.
 ** Means followed by the same letter are not significantly different at the 1%
 level of probability.