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Group Title: Animal science research report - University of Florida Department of Animal Science ; AL-1973-10
Title: High dietary levels of zinc-bacitracin (Baciferm(R)) for growing-finishing swine
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Permanent Link: http://ufdc.ufl.edu/UF00073051/00001
 Material Information
Title: High dietary levels of zinc-bacitracin (Baciferm(R)) for growing-finishing swine
Series Title: Animal science research report
Physical Description: 3 leaves : ; 28 cm.
Language: English
Creator: Combs, G. E ( George Ernest ), 1927-
Wallace, H. D ( Harold Dean )
University of Florida -- Dept. of Animal Science
University of Florida -- Agricultural Experiment Station
Publisher: Florida Agricultural Experiment Station
Place of Publication: Gainesville Fla
Publication Date: 1973
 Subjects
Subject: Swine -- Feeding and feeds -- Florida   ( lcsh )
Antibiotics in animal nutrition   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: G.E. Combs and H.D Wallace.
General Note: Caption title.
General Note: "November, 1973."
Funding: Animal science research report (University of Florida. Dept. of Animal Science) ;
 Record Information
Bibliographic ID: UF00073051
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 80016775

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Department of Animal Science Florida Agricultural
Animal Science Research Report AL-1973-10 Experiment Station
November, 1973 Gainesville, Florida


(0 HIGH DIETARY LEVELS OF ZINC-BACITRACIN (BACIFERM(R))
FOR GROWING-FINISHING SWINE 1/

G. E. Combs and H. D. Wallace 2/


Several reports indicate that antibiotics may be less effective in increasing

rate and efficiency of gain than they wre Q-1-15 years ago. Therefore to achieve

the same degree of r ght e 1 Ivels may be required.

The present stud was designed to compare the efficacy of several levels of
a iw 0 '1975
zinc-bacitracin in pr motin a more rapid and efficient rate of gain with growing-

finishing swine. o Fn oridav

Experlmental

Seventy-five pigs averaging approximately 59 pounds were allotted from outcome

groups to 5 dietary treatments. All pigs were fed a fortified corn-soybean meal

diet (Table 1) in concrete-floored pens equipped with self-feeders and automatic

waterers.

Zinc-Bacitracin was added to provide dietary levels of 0, 10, 20, 40 and 80

gm per ton.

Results and Discussion

The results of this study are summarized in Table 2.

1/ This study was supported in part by a grant from Commercial Solvents Corp.,
Terre Haute, Indiana. Other Fla. An. Sci. Reports on this subject include
Mimeo Series No. AN71-4. Data from the present experiment came from Expt.
216.
2/ Combs and Wallace, Animal Nutritionists, Animal Science Department, Univer-
sity of Florida.


This public document was promulgated at an annual cost of
$59.01 or four cents per copy to inform county agricul-
tural directors, ranchers and growers of research results
in swine management and nutrition.


Department of Animal Science
Institute of Food And Agricultural Sciences






2 -

The average increase of all Zinc-Bacitracin groups over the control was

about 2.5%. The greatest increase (4%) occurred with the 20 gm per ton pens and

the smallest (1%) was found with the pens receiving the highest (80 gm/ton) level

of Zinc-Bacitracin. This average increase is considerably less than the generally

accepted figure of 10%. But in view of the many factors, including disease level

and stress which influence this response, the finding is not too surprising.

Feed efficiency was increased an average of approximately 1% by dietary Zinc-

Bacitracin. Usually an increase of 5-6% is found and was probably influenced by

the same factors that reduced the growth response.

Summary

Seventy-five growing-finishing pigs were fed fortified corn-soybean diets

containing 0, 10, 20, 40 and 80 gm per ton of Zinc-Bacitracin.

The approximate percentage increase of all pigs fed Baciferm over the control

pigs was 2.5 and 1 for gain and feed efficiency respectively. The similarity in

response for the 10, 20, 40 and 80 gm/ton groups indicates that in this study high

levels of dietary Zinc-Bacitracin were not beneficial in stimulating performance.


Table 1. Composition of Diet


Ingredient lb.

Ground yellow corn 1/ 79.35
Soybean meal (50%) 18.00
Defluorinated phosphate 2.00
Iodized salt 0.50
Trace mineral mix 2/ 0.10
Vitamin mix (UF) 0.05

1/ Protein content 16% initially and reduced to
14% at body weight of 125 lb.
2/ Supplied the following (ppm): Mn, 57; Fe, 70;
Cu, 4.8; Co, 1.6 and Zn, 100.
3/ Supplied the following per lb. of diet: Vita-
min A, 1250 IU; Vitamin D, 200 IU; riboflavin,
3 mg; niacin, 10 mg; pantothenic acid, 6 mg;
choline chloride, 40 mg; Vitamin B12, 5 mcg.






-3 -


Table 2. Baciferm for Growing-Finishing Swine


Baciferm gm./ton
0 10 20 40 80

Av. initial weight, lb.
Replication 1 72.8 73.1 73.2 73.5 73.5
Replication 2 57.4 57.4 57.4 57.2 57.3
Replication 3 46.6 46.3 45.4 46.4 47.0
Av. all replications 58.9 58.9 58.7 59.0 59.3

Av. final weight, lb.
Replication 1 223.4 214.2 228.4 225.8 217.4
Replication 2 225.2 237.6 225.4 216.8 216.4
Replication 3 208.0 218.8 222.4 230.6 232.2
Av. all replications 218.9 223.5 225.4 224.4 222.0

Av. daily gain, lb.
Replication 1 1.79 1.68 1.85 1.81 1.71
Replication 2 1.71 1.84 1.71 1.63 1.62
Replication 3 1.54 1.64 1.69 1.75 1.76
Av. all replications 1.68 1.72 1.75 1.73 1.70

Av. daily feed intake, lb.
Replication 1 5.83 5.60 6.13 6.07 5.92
Replication 2 5.68 5.58 5.60 5.26 4.99
Replication 3 4.87 5.22 5.21 5.45 5.60
Av. all replications 5.45 5.47 5.65 5.59 5.50

Av. feed/gain, lb.
Replication 1 3.26 3.33 3.31 3.35 3.46
Replication 2 3.32 3.03 3.27 3.23 3.08
Replication 3 3.17 3.18 3.08 3.11 3.18
Av. all replications 3.25 3.18 3.22 3.23 3.24




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