Group Title: Mimeo report - University of Florida Everglades Experiment Station ; 69- 19
Title: Value of vitamins A and E for fattening steers
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Permanent Link: http://ufdc.ufl.edu/UF00067461/00001
 Material Information
Title: Value of vitamins A and E for fattening steers
Series Title: Everglades Station Mimeo Report
Physical Description: 4 p. : ; 29 cm.
Language: English
Creator: Chapman, H. L ( Herbert L. ), 1923-
Shirley, Ray L
Cunha, T. J ( Tony Joseph ), 1916-
Everglades Experiment Station
Publisher: Everglades Experiment Station
Place of Publication: Belle Glade Fla
Publication Date: 1963
 Subjects
Subject: Beef cattle -- Feeding and feeds -- Florida   ( lcsh )
Vitamins in animal nutrition -- Florida   ( lcsh )
Genre: non-fiction   ( marcgt )
 Notes
Statement of Responsibility: Herbert L. Chapman, Jr., R.L. Shirley and T.J. Cunha.
General Note: "April, 1963."
 Record Information
Bibliographic ID: UF00067461
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 63681809

Full Text


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Everglades Station Mimeo 63-19 April, 1963
VALUE OF VITAMINS A AND E FOR FATTENING STEERS
Herbert L. Chapman, Jr., R. L. Shirley and T. J. Cunha

This is a preliminary report of four experiments conducted to evaluate the
use of vitamins A and E in steer fattening rations.

Experimental Procedure

The first three experiments (Tables 1, 2, 3) were conducted on Roselawn St.
Augustinegrass pastures. Two were conducted during winter and one during summer.
The fourth study (Table 4) was conducted in drylot during the summer.
In the first experiment 64 two-year-old steers of mixed breeding were divided
into 8 groups on the basis of breed, grade, weight and previous treatment. The
groups were randomly allotted to the treatments presented in Table 1. The com-
position of all of the experimental rations were as follows:
Experiment number
1 2 3 4
L F F F F
Ground snapped corn 807 974 976 976 976
Dried citrus pulp 800 800 800 800 800
Cottonseed meal (41%-OP) 360 200 200 200 200
Urea-262 16 16 16 16
Mineral mixture 33 10 8 8 8
2000 2000 2000 2000 2000
Limited fed groups received 6.0 of feed a day per steer and full-fed groups re-
ceived all the feed they wanted. The vitamins were mixed in the feed daily. During
the second experiment 72 two-year-old steers of mixed breeding were divided into
9 equal groups on the basis of weight, grade and breed. The groups were randomly
allotted to the treatments presented in table 2. In the third experiment 32 Brah-
man x Angus yearling steers were divided into 4 groups on the basis of weight and
grade and the groups randomly allotted to the treatments presented in table 3.
Similarly, in the fourth experiment 32 two-year-old Angus steers were divided into
4 equal groups on the basis of weight, grade and previous treatment. The four
groups were then randomly allotted to the treatments shown in table 4.
An initial slaughter grade was placed on each animal by a grading committee.
The final grade is the carcass grade by a U.S.D.A. grader. Calculations for the
carcass data were made as follows:
a. Intransit shrink Final weight weightat'acking house x 100
a. Intransit shrink = x 100
Final weight
b. Dressing percent = Warm carcass weight x 97.5 \
b. Dressing percent = 71Z'.:l 1 ) x 100
Packinghoudeihteight ''
c. Cooler shnk Warm carcass weiht cold carcass weight x 00
Warm carcass weight / /

a/ Prepared for presentation at 1963 Beef Cattle-Short' Course, University of
Florida.
b/ Acknowledgement is made to R. W. Kidder, C. E. Haines, John Easley, A. Z.
Palmer, J. V. McLeod and others who assisted in these experiments.
c/ Vitamins A and E were furnished by Distillation Products, Inc., Rochester,N.Y.













Table 1. Summary of an experiment to study vitamin A and E
levels of feed intake. (117 days on test)


for steers fattened on winter pasture with two


Concentrate feed intake Limited Eull
Vitamin supplement a/ 0 A E A+E 0 A E A+E

Number of animals 8 7 8 8 8 8 8 8
Final weight (lbs.) 918 973 991 934 1113 1119 1148 1144
Initial weight (Ibs.) 800 804 799 798 800 801 799 801
Total gain (lbs.) 118 169 192 136 313 318 349 343
Daily gain (Ibs.) 1.01 1.44 1.64 1.16 2.68 2.72 2.98 2.93

Final slaughter grade bJ 5 6 5 6 9 9 10 10
Initial slaughter grade 7 7 6 7 7 7 7 6
Increase -2 -1 -1 -1 +2 +2 -1-3 +4
Intransit shrink (%) 6.54 6.58 6.36 6.21 5.93 6.17 7.40 6.29
Dressing percent (%) 54.7 54.6 53.7 54.9 60.6 60.4 61.9 60.2

Daily feed intake (lbs.) 6.0 6 6.0 6.0 6.0 24.9 23.9 25.6 25.2


a/ Vitamin A supplemented at the rate
50 I.U. per animal daily.


of 25,000 I.U. per animal daily and Vitamin E at the rate of


Choice = 12,13,14
Good = 9,10,11
Standard = 6,7,8
Utility = 3,4,5


b/ U.
U.
U.
U.














Table 2. Summary of an experiment to evaluate different levels of vitamins A
on test)


and E on winter pasture (136 days


Level of A (I.U.) 0 25,000 50,000 0 25,000 50,000 0 25,000 50,000
Level of E (L.U.) 00 0 50 50 50 250 250 250

Number of animals 8 8 8 8 8 8 8 8 8
Final weight (Ibs.) 1078 1118 1137 1088 1089 1111 1084 1114 1102
Initial weight (ibs.) 758 761 762. 759 758 759 756 757 761
Total gain (Ibs.) 320 357 375 329 331 352 328 357 341
Daily gain (Ibs.) 2.35 2.62 2.76 2.42 2.44 2.59 2.41 2.62 2.51
Dressing percent ($) a 61.3 59.1 59.6 61.2 60.8 60.4 62.0 60.7 60.6
Final slaughter grade b/ U 10 1U U 10 1 11 11 10
Initial slaughter grade 6 6 6 6 6 6 6 6 6
Increase 5 4 5 5 4 5 5 5 4
Daily feed intake (Ibs.) 23.0 23.3 24.1 23.2 23.3 23.0 22.2 24.0 23.4


a/ Dressing percent = Warm carcass weight x 97.5
Final weight shrunk 3%
b/ Same as footnote b in table 1.







Table 3. Summary of an experiment to study vitamin A and E for steers fattened
on summer pasture (on test 98 days).


Vitamin supplement a/ 0 A E A+E
Number of animals 8 8 8 8
Final weight (lbs.) 1009 1014 1011 1011
Initial weight (Ibs.) 796 794 795 795
Total gain (lbs.) 213 220 216 216
Daily gain (Ibs.) 2.17 2.24 2.20 2.20

Final slaughter grade b/ 12 12 12 12
Initial slaughter grade 6 6 6 6
Increase 6 6 6 6

Intransit shrink (%) 5.65 5.81 5.04 5.34
Dressing percent (%) 60.9 61.6 62.0 61.6
Cooler shrink (%) 1.70 1.81 1.79 1.54

Daily feed intake (lbs.) 20.9 22.0 21.3 21.6

a/ Vitamin A supplemented at the rate of 25,000 I.U. per animal daily and
Vitamin E at the rate of 50 I.U. per animal daily.
bJ Same as footnote b in table 1.


Table 4. Summary of average weight changes, and carcass data per animal
for steers on Vitamin A study in drylot (on test 116 days).

a/ No Pangola hay Pangola hay
Vitamin supplement 0 A 0 A


Number of animals
Final weight (Ibs.)
Initial weight (lbs.)
Total gain (Ibs.)
Daily gain (Ibs.)

Final slaughter grade b-
Initial slaughter grade
Increase

Intransit shrink (%)
Dressing percent (%)
48-hour cooler shrink ($)

Daily feed intake (Ibs.)
Concentrate feed
Pangola hay


8
968
712
256
2.21

11
7
4

4.13
60.0
2.28


20.5


8
968
706
262
2.26

12
7
5

3.82
60.3
2.26


21.7


8
997
708
289
2.49

12
7
5

3.81
61.6
2.31


22.6
3.0


8
979
708
271
2.34

12
7
5

3.88
60.9
2.55


22.2
2.6


a/ Vitamin A supplemented at the rate of 25,000

b/ Same as footnote b in table 1.

EES Mimeo 63-19
800 copies


I.U. per animal daily.




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