Table 4.- Stilbestrol Implants Versus No Stilbestrol Number head Number days Ave. initial weight Ave. final weight Ave. gain Ave. daily gain Difference Carcass and Financial Data: Ave. slaughter weight Ave. carcass weight Difference Ave. carcass yield Ave. price cwt. carcass Ave. price cwt. on foot Ave. carcass grade Ave. degree marbling Ave. sq. in. rib eye Ave. fat cover rib eye Ave. percent kidney fat Est. yield closely trimmed cuts Ave. sale price Difference within lot due to implantation Lot 32 24 mg. implant 5 180 528 953 425 2.36 + 0.33 953 583 +43 61.11 $ 35.00 21.39 Ave. good Slight + 10.98 0.50 3.0 49.96 $203.91 Lot 33 Lot 34 +15.05 Lot 35 + 66 7-- + 7 ,)h-on +1 6R +37 Q7 24oi on Lot 32 No implant 5 180 528 894 366 2.03 894 540 60.33 $ 35.00 21.12 Ave. good Slight + 11.24 0.37 3.0 51.09 $188.86 24 mg. implant 5 180 655 1005 349 1.94 + 0.05 1005 624 +10 62.06 $ 35.40 21.97 High good Small - 11.36 0.39 2.7 50.48 $220.76 No. implant 5 180 657 997 340 1.89 997 614 61.82 $ 36.23 22.30 High good Small 11.53 0.40 3.0 50.43 $222.42 24 mg. implant 5 180 654 1077 423 2.35 + 0.77 1077 670 +97 62.26 $ 35.00 21.79 Ave. good Slight + 12.82 0.35 3.1 51.10 $234.64 No. implant 5 180 652 937 285 1.58 937 573 61.15 $ 34.32 20.99 Low good Slight 11.39 0.25 2.5 51.82 $196.67 24 mg. implant 5 180 649 982 332 1.85 + 0.53 982 611 +53 62.25 $ 34.73 21.62 Ave. good Slight - 11.69 0.31 2.6 51.35 $212.22 NO implant 5 180 647 885 237 1.32 885 558 63.06 $ 33.60 21.19 Low good Slight 12.13 0.22 3.1 52.40 $187.42