-8- Table 4 Economic Data of Growing Beef Calves Receiving Six Different Cool-Season Feeding Regimes in Northwest Florida (1973-74) Treatments Item ICa) TT(h) TTT(r) TV(d) V() VT(f) Feed cost/cwt. gain Corn silage(g) $ 18.37 ------- ------------------- $ 7.93 Concentrate supplement(h) $ 9.13----- -------------------------- Pasture supplemental ration (i) --------------------- ------- $ 10.27 ------- Pasture(j) ------- $ 15.39 $ 17.90 $ 18.74 $ 13.06 $ 12.27 Total(k) $ 27.50 $-5.T 39$ 17.90 $ 18.74 $ 23.33 $ 20.20 Avg cost/head of feeder(l) $209.43 $206.65 $204.42 $206.65 $204.42 $207.20 Avg feed cost/head of feeder $ 76.45 $ 46.94 $ 52.45 $ 54.53 $ 78.86 $ 56.16 Total cost/head of feeder(k) $285.88 $253.59 $256.87 $261.18 $283.28 $263.36 Final value/head(m) $235.44 $243.36 $237.60 $238.32 $253.80 $234.00 Net loss/head(k) -$ 50.44-$ 10.23-$.19.27-$ 22.86-$ 29.48-$ 29.36 Net loss/acre(k) .--- ..$- 14.85-$ 34.49-$ 41.83-$ 60.73-$ 78.10 (a) Treatment I corn silage (95%) + concentrate supplement (protein, mineral, vitamir (5%) in drylot. (b) Treatment II rotational grazing of a triticale, ryegrass, and crimson clover mix- ture (unsupplemented)---three applications of 100 lb./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 equivalent to 300 lb1.acre of amzonium 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 lb./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 Ib./acre each of ammonium nitrate during the grazing season. (g) Corn silage cost = $20.00/ton. (h) Concentrate supplement cost = $188.23/ton. (i) Pasture supplemental ration cost = $82.01/ton. (j) Pasture cost = $90.79/acre for the pastures receiving 300 lb./acre of ammonium nitrate, $93.79/acre for the pastures receiving one application of sulfur-coated urea equivalent to 300 lb./acre of ammonium nitrateand $100.09/acre for the pastures receiving 600 lb./acre of annonitm nitrate. (k) Does not include labor involved in feeding and caring for the animals. (1) Calf cost = $55.70/cwt. (includes cost of animals, hauling, veterinary costs, etc.). (m) Based on an animal value of $36.00/cwt. at the end of the trial.