Group Title: Mimeo report - University of Florida Everglades Experiment Station ; 62-13
Title: Feeding value of different levels of an enzyme preparation for fattening cattle
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Permanent Link: http://ufdc.ufl.edu/UF00067587/00001
 Material Information
Title: Feeding value of different levels of an enzyme preparation for fattening cattle
Series Title: Everglades Station Mimeo
Physical Description: 4 p. : ; 29 cm.
Language: English
Creator: Chapman, H. L ( Herbert L. ), 1923-
Haines, C. E
Kidder, Ralph W
Everglades Experiment Station
Publisher: Everglades Experiment Station
Place of Publication: Belle Glade Fla
Publication Date: 1962
 Subjects
Subject: Beef cattle -- Feeding and feeds -- Florida   ( lcsh )
Diethylstilbestrol -- Florida   ( lcsh )
Genre: non-fiction   ( marcgt )
 Notes
Statement of Responsibility: H.L. Chapman, Jr., C.E. Haines and R.W. Kidder.
General Note: "February 1962."
Funding: Everglades Station Mimeo Report ;
 Record Information
Bibliographic ID: UF00067587
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 65529318

Full Text
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*" b-2- 13


Everglades Station Mimeo 62-13 February 1962

Feeding value of different levels of an enzyme preparation for fattening cattle/2/
H. L. Chapman, Jr., C. E. Haines and R. W. Kidder 3


The result:- of earlier work at the Everglades Station, with enzymes in steer
fattening rations, has been reported (1). This work indicated that the enzyme
preparation Zymo-Pabst had-possible merit when steers were furnished a full intake
of a concentrate feed on pasture. The purposes of the experiment reported in this
paper were to obtain further information concerning the best level of Zymo-Pabst
with which to supplement a fattening ration; to see if the effect of this enzyme
preparation was the same on pasture and in drylot; and to see if diethylstilbestrol
altered the effect of the enzyme preparation on cattle performance.

Experimental Procedure

Seventy-two long yearling Brahman x Hereford and Brahman x Angus crossbred
steers, having an average medium utility slaughter grade, were divided into six
equal groups of 12 animals each, on the basis of weight, slaughter grade and
breed. They were then allotted at random to the experimental treatments. The
experimental rations, composed of 48.7 percent ground snapped corn, 40.0 percent
dried citrus pulp, 10.0 percent 41%o cottonseed meal, 0.8 percent Urea-262 and
0.5 percent of a complete mineral mixture, was full fed. Zymo-Pabst was mixed
in the feed daily, to furnish 0, 2 or 4 grams of the enzyme per animal per day.

One half of the animals on pasture and one half of the animals on drylot
were given 24 mg. of diethylstilbestrol (Chas. Pfizer and Co.) implanted in the
ear at the beginning of the experiment. The pasture forage was Roselawn St.
Augustinegrass and the steers in drylot received silage made from the same kind
of grass as their roughage.

A committee of graders placed on initial slaughter grade on each animal.
The initial value per pound-was based on the value of similar quality cattle
at the Belle Glade auction market. The final value was the actual selling
value of each animal. U.S.D.A. slaughter grades are coded 3, 4 and 5 for low,
medium and high utility; 6, 7 and 8 for low, medium and high standard; and 9,
10 and 11 for low, medium and high for the good grade. At the end of the
feeding period, the animals were taken to Miami for slaughter where shipping
and carcass data were obtained.

1Acknowledgment is made to Mack Barnwell, L. V. Morris, Tom Swager, J. V.
McLeod and others who assisted in this experiment.
2 This study was supported in part by a grant-in-aid from Pabst Brewing Cgmpany,
Milwaukee, Wisconsin. Diethylstilbestrol implants were furnished by
Pfizer and Co., Terre Haute, Indiana. ,

Associate Animal Nutritionist, Assistant Animal Husbandman and A+Q Husband-
man, Everglades Experiment Station. Aa








Calculations used to secure the carcass data are as follows:

final weight packinghouse weight
Intransit shrink = x 100
final weight

warm carcass weight
Gross dressing percent = acknghse x 100
packinghouse weight

warm carcass wt. cold carcass wt.
48-hr. cooler shrink = x 100
warm carcass wt.


Results

A summary of gains, carcass data and returns above steer and feed costs
for the steers fattened on pasture and for those in drylot are presented in
Table 1 and 2, respectively.

The average daily gain for stilbestrol-implanted steers, on pasture was
2.4i pounds as compared to 1.98 pounds for the non-implanted steers. The
addition of four grams of Zymo-Pabst increased the rate of gain of steers on
pasture approximately 10 percent for those receiving the implants and approxi-
mately 8 percent those not receiving stilbestrol. The two gram level of sup-
plementation did not increase the gains of steers on pasture. Feed efficiency
and carcass characteristics were not significantly affected by enzyme treatments.
However, returns above steer and feed costs was increased by each level of
enzyme supplementation due to the additional increase in slaughter grade of the
enzyme-supplemented steer.

The response to the enzyme was more variable by the steers being fattened
in drylot. The enzyme did not affect any carcass characteristics or stimulate
gain for the stilbestrol-implanted steers. However, the enzyme did increase
rate of gain slightly more than 10 percent at each level for the steers that
were not implanted. Return above steer and feed cost was affected in the same
manner.


Literature Cited

(1) Chapman, H. L., Jr., C. E. Haines and R. W. Kidder. 1961. Feeding value
of various enzyme preparations for cattle being fattened on pasture.
Everglades Station Mimeo Report 61-21.
















Table 1. Summary of average weight changes, carcass and cost
fattened on pasture (on test 153 days).


data per steer


Enzyme level (gns/head/day) 0 2 4

Stilbestrol + 0 + 0 + 0


Number of animals

Final weight (lbs.)
Initial weight (Ibs.)
Total gain (lbs.)
Daily

Final slaughter grade
Initial slaughter grade
Increase (1/3)

Intransit shrink (%)
Gross dressing percent
48-hour cooler shrink (%)

Daily feed consumption (Ibs.)
Feed/lb. animal gain (lbs.)

Final animal value ($)
Initial animal value $)
Total feed cost ($) /


6 6


982
623
359
2.35


3.77
61.38
1.03


924
629
295
1.93
8
4
4

3.79
61.53
0.73


6 6


969
620
349
2.28

9
4
5

3.41
62.93
0.68


19.3 19.3 19.4
8.2 10.0 8.5


215.18
116.66
77.16


196.54
117.44
77.16


216.98
115.66
77.66


913
618
295
1.93
10
4
6

2.41
62.06
0.72


19.4
10,1


205.25
114.50
77.66


6 6


1010
613
397
2.59

9
5
4

3.96
62.98
0.98


933
613
320
2.09
8
5
3
4.29
62.49
1.08


Return over steer & feed cost ($) 21.36


1.94 23.66 13.09 30.03


I/ Does not include enzyme or stilbestrol cost.


21.3 21.3
8.2 10.2


229.95
114.43
85.49


200.38
114.68
85.49


0.21













Table 2. Summary of average weight changes, carcass and cost data
fattened in drylot (on test 153 days).


per steer


Enzyme level (gms./head/day) 0 2 4

Stilbestrol +- 0 + 0 + 0


Number of animals

Final weight (ibs.)
Initial weight (ibs.)
Total gain (lbs.)
Average daily gain (lbs.)

Final slaughter grade
Initial slaughter grade
Increase (1/3)

Intransit shrink (%)
Gross dressing percent
48-hour cooler shrink (%)

Daily feed consumption (lbs.)
Concentrate feed
Silage


6 6


1033
628
405
2.65


3.68
62.31
0.81

21.8
7.5


Feed/lb animal gain (lbs.) 8.2
Silage/lb animal gain (Ibs.) 2.8

Final animal value ($) 232.80
Initial animal value ($) 116.92
Feed cost ($) I/
Concentrate 87.56
Silage 2.88

Return over steer and feed cost($) 25.44


935
613
322
2.10

10
4
6

3.53
60.98
0.73

21.8
7.5
10.4
3.6

206.30
113.42


6 6


1002
621
381
2.49

10
4
6

2.89
61.36
0.84

22.2
8.0


990
630
360
2.35

10
4
6

3.43
62.24
1.01

22.2
8.0


8.9 9.4
3.2 3.4

224.07 223.36
115.50 117.36


87.56 88.95
2.88 3.07


88.95
3.07


2.44 16.55 13.98


6 6


1o1o
616
394
2.58.
10
4
6

3.17
62.07
0.82

22.2
6.7


979
623
356
2.33

9
4
5
2.86
62.57
0.67

22.2
6.7


8.6 9.5
2.6 2.9

227.79 221.37
114.30 115.36


88.82
2.57


88.82
2.57


22.10 14.62


1/ Does not include enzyme or stilbestrol cost.








EES Mimeo 62-13
400 copies


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