| Material Information
||Use of diethylstilbestrol implants for cattle fed on pangola pasture
||Research report ;
||4 p. : ; 28 cm.
||Chapman, H. L ( Herbert L. ), 1923-
Palmer, A. Z
Agricultural Research Center, Ona
||Agricultural Research Center,
Agricultural Research Center
||Place of Publication:
||Beef cattle -- Feeding and feeds -- Florida ( lcsh )
Diethylstilbestrol -- Florida ( lcsh )
Beef cattle -- Weight -- Florida ( lcsh )
||government publication (state, provincial, terriorial, dependent) ( marcgt )
bibliography ( marcgt )
non-fiction ( marcgt )
||Statement of Responsibility:
||H.L. Chapman, Jr. and A.Z. Palmer.
||Includes bibliographical references (p. 4).
| Record Information
||University of Florida
||University of Florida
||All rights reserved by the source institution and holding location.
||oclc - 85836522
Agricultural Research Center, Ona APR 20 '
RC-1972-5. April 4, 197'
I.FA.S. Univ. of Florida
USE OF DIETHYLSTILBESTROL IMPLA TIF T T.LE
FED ON PANGOLA PASTURE-1
H. L. Chapman, Jr. and A. Z. Palmer-
Research in Florida has shown that diethylstilbestrol will
increase the rate of gain of steers fattened on pasture about
9 or 10% on about 8% less feed (1, 2). This earlier research
was done on Roselawn St. Augustine (1) and Argentine bahiagrass
(2) pastures. This report presents an experiment conducted to
determine the value of diethylstilbestrol implants for beef
steers being fed on Pangolagrass pasture.
Forty-eight crossbred steers were divided into four
groups of 12 steers each, on the basis of weight and breed.
The groups were randomly assigned to experimental treatments
of 0, 12, 24 or 36 mg. of diethylstilbestrol implanted at the
beginning of the feeding period. Each group was placed on
10 acres of Pangolagrass winter pasture. The stand of Pangola-
l/ Diethylstilbestrol implants were furnished by Charles
Pfizer & Co., Terre Haute, Indiana.
2/ Director, Ona Agricultural Research Center, and Meat
Scientist, Department of Animal Science, University of
grass was infested with,Vasey and Bermudagrass but the majority
of forage was Pangolagrass. The feeding period was from
January to May. The steers were fed 10 pounds a day of a
concentrate mixture comprised of 50% dried citrus pulp, 32%
corn hominy feed, 10% blackstrap molasses, 5% dehydrated
alfalfa meal pellets (15% protein), 2% urea 287 and 0.5%
each of a complete mineral mixture and DIKAL Initial and
final weights were taken after a 14-hour shrink, in order to
minimize effect of fill on live weights. The steers were fed
for 113 days after which they were sold to Center Hill Packing
Company. Carcass evaluation was made by personnel from the
Meats Laboratory in Gainesville.
Rate of gain and carcass data are presented in Table 1.
Gain was increased from 14 to 19 percent by the use of the
diethylstilbestrol implants with an almost linear increase in
gain for the three levels of implantation. It was not possible
to obtain intransit shrink for each group but the entire
experiment lost 3.28 percent enroute to the packing house.
The use of diethylstilbestrol did not have any significant
effect on carcass characteristics.
3/ DIKAL was furnished by Borden Chemical Company, Plant
Table 1. Average gain and carcass data for steers implanted
with different levels of diethylstilbestrol (113
days on feed).
Level of diethvlstilbestrol
0 12 24 36
Initial weight, lb.
Final weight, lb.
Total gain, lb.
Daily gain, lb.
Hot carcass weight, lb.
*** Dressing /
% Kidney fat
Fat over eye (in.)
Ribeye area (sq. in.)
Marbling of ribeye
Estimated % yield
/ Dressing % = Hot carcass weight
1. Chapman, H. L., Jr., A. Z. Palmer, R. W. Kidder, J. W.
Carpenter,.and C. E. Haines. 1964. Oral and implanted
stilbestrol for beef cattle fattened on pasture and in
drylot. Fla. Agr. Exp. Sta. Bull. 666.
2. Peacock, F. M., W. G. Kirk, E. M. Hodges, A. Z. Palmer,
and J. W. Carpenter. 1965. Influence of summer pasture,
diethylstilbestrol and shade on fattening cattle in south
Florida. Fla. Agr. Exp. Sta. Tech. Bull. 700.