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Group Title: Department of Animal Science mimeograph series - University of Florida Department of Animal Science ; no. AN71-4
Title: Zinc bacitracin-(baciferm(R)) for growing-finishing swine
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Permanent Link: http://ufdc.ufl.edu/UF00073033/00001
 Material Information
Title: Zinc bacitracin-(baciferm(R)) for growing-finishing swine
Series Title: Department of Animal Science mimeograph series
Physical Description: 3 p. : ; 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: 1971
 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: "May, 1971."
 Record Information
Bibliographic ID: UF00073033
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 79842967

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O Department of Animal Science Florida -
,iiimeograph Series No. AN71-4 7 i.en
4iiay L 0 97i -da

ZINC BACITRACIN- (BACIFERM()) FO Ma 19
GROWING-FINI.SHING SWINE 1/

G. E. Combs and-H D. Wallace 2/ S n f Florid


The improvement in growth rate and feed efficiency resulting'from the addition
of antibiotics to swine diets has been recognized for several decades. But to in-
sure a continuation of these benefits the efficacy of recommended dietary levels
must be periodically reevaluated.

The present study was undertaken to determine the.most effective levels of
Baciferm for pigs during several phases of the growing-finishing period.

Experimental

In each of two experiments 70 pigs 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. The
dietary treatments were as follows:


Experiment 1 -


levels of Baciferm from 29 to 125 lb. body weight
and from 126 to 200 Ib. body weight-were, respectively:
(1) 0, 0; (2) 50, 25;1 (3) 25, 10; (4) 10, 5; (5) 50,
50 gm/ton.


Experiment 2 -


levels Baciferm from 65 to 113 lb., 114 to 153
154 to 213 lb. body weight were respectively:
0; (2) 10, 10, 10; (3) 50, 25, 10; (4) 25, 25,
50, 25.


lb. and
(1) 0,00,
25; (5) 50,


Results and Discussion


The performance of pigs in Experiment 1 is summarized in Table 2. During
the initial period (29-125 lbs.) daily gain, daily feed consumed and feed per
unit of gain was'not significantly influenced by treatment. From 126 to 200 lb.
body weight significant differences were found in daily gain. The groups fed the
Baciferm sequence of 50-25 and 59-50 gained significantly faster (P< .05) than
the control group. This finding differs from most in that the response to anti-
biotics is usually more pronounced with the younger or lighter weight pig.

The daily gains for the total period (29-200 lb. body weight)..showed a signif-
icant difference (P< .05) between the control pigs and thobse;given :either the
10-5 or 50-50 Baciferm sequence. No significant difference (P> .05) was found
among pigs fed any of the dietary levels of Baciferm.

The results of experiment 2 are summarized in Table 3. No significant

1/ This study was supported in part by a grant from Commercial Solvents Corp.,
Terre Haute, Indiana.
2/ Combs and Wallace, Animal Nutritionists, Department of Animal Science.





differences (P< .05) were found among treatments for either rate of efficiency of
gain when expressed on either a single weight period or the total period.

Summary

Two experiments were conducted with growing-finishing pigs fed various se-
quences of Baciferm during the experimental period.

Daily gain and feed efficiency were improved 7% and 5% respectively by the
addition of Baciferm. The response to the various levels of Baciferm varied con-
siderably but in both experiments the highest rate of gain was found with the
highest dietary level of Baciferm.


Table 1. Composition of Diets


Init. body wt. 126 lb. to
Ingredient to 125 lb. final body wt.


lb. Ib.

Ground yellow corn 76.55 81.55
Soybean meal (50%) 20.30 15.30
Defluorinated phosphate 2.50 2.50
Salt 0.50 0.50
Trace Minerals 1/ 0.10 0.10
Vitamin mix 2/ 0.05 0.05
Total 100.00 100.00


1/ Supplied the following (PPM): Mn, 57; Fe, 70; Cu, 4.8; Co, 1.6
and Zn, 100.
2/ Supplied the following per lb. of diet: vitamin A, 1250 I. U.;
Vitamin D, 200 I. U.; riboflavin, 3 mg.; niacin, 10 mg.; panto-
thenic acid, 6 mg; choline chloride, 40 mg; vitamin B12, 5 mcg.






-3-


Table 2. Influence of Baciferm on Performance of
Growing-Finishing Pigs (Experiment 1)


Baciferm, gm./ton 0-0 50-25 25-10 10-5 50-50

29-125 lb. body wt.
Av. daily gain, lb. 1.44 1.45 1.50 1.54 1.56
Av. daily feed, lb. 3.81 3.78 3.83 3.76 3.67
Av. feed/gain, lb. 2.65 2.60 2.55 2.43 2.35

126-200 lb. body wt.
Av. daily gain, lb. 1.60c 1.84a 1.69abc 1.76abc 1.82ab
Av. daily feed, lb. 5.85 6.16 6.51 6.67 6.62
Av. feed/gain, lb. 3.66 3.33 3.85 3.79 3.64

29-200 lb. body wt.
Av. daily gain, lb. 1.52b 1.62ab 1.58ab 1.64a 1.65a
Av. daily feed, lb. 4.84 4.82 4.93 5.04 4.97
Av. feed/gain, lb. 3.18 2.97 3.12 3.07 3.01

abc Treatment means on the same line bearing different superscript letters
differ significantly (P < .05).


Table 3. Influence of Baciferm on Performance of
Growing-Finishing Swine (Experiment 2)


Baciferm 0 10 50 25 50
gm/ton 0 10 25 25 50
0 10 10 25 25


Av. daily gain, lb.
65-113 lb.
114-153 lb.
154-213 lb.
65-213 lb.

Av. feed/gain, lb.
65-113 lb.
114-153 lb.
154-213 lb.
65-213 lb.


1.67
1.76
1.67
1.69


2.81
3.30
4.00
3.42


1.74
1.91
1.78
1.80


2.58
3.15
3.92
3.26


1.72
2.00
1.74
1.78


2.74
3.09
3.99
3.35


1.54
1.91
1.67
1.69


3.07
3.13
3.93
3.43


1.67
1.98
1.87
1.83


2.62
3.16
3.71
3.23


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