FEB 4 1954


T ..TH ELORIDA EX9PERINENT STATION
qUL7CY, ZLoaiilL


F.F.E.S, Mimeo Rpt. 54-3.


JTniuary 27, 1954


EFFECT OF AUREOiMYCTN ADDED TO RATIOS OF SWIUE GRAZI'TN HIGE QUALITY PASTURE

by 7. S. Baker, Jr.
Assistant Animal Husbandman
In two recent trials at this Station, adding an aureomycin supplement to
a ration of corn, soybean oil meal, minerals, and excellent non-legume pasture
slightly increased pig gains in one instance but did not greatly affect gains
in the othlr trial.l Large, thrifty, uniform pigs were used in both trials.

PROCEDURE
Duroc sows that produced the experimental pigs were fed the following
rations:


Group I


Group II


Ear corn
Soybean Oil meal plus aureomycin
supplement
Pasture
Minerals


Ear corn
Soybean Oil meal

Pasture
Minerals


The aureomycin supn3 ,' nt (Aurofac) contained 1.8 grams aureomycin
hydrochloride and 1.8 mr:' igrmas of vitamin B12 activity per pound. Three pounds
of this supplement were "'i ed to 97 pounds 41l soybean oil meal to which 7%
steamed bonemeal had pt : ously been added to insure adequate calcium consumption.

Each litter wrs equally divided at weaning and fed the following rations:


Group I


Group II


Ear corn self-fed

93 Ibs. 41;. soybean oil) ) 0.5
meal )97) lb.
7 lbs. steamed bonemeal) ) per head
Aureomycin supplement 3%) daily

mineral mixture
Pasture


Ear corn self-fed

93 Ibs. 41% soybean oil)0.5
meal )lb.
7 lbs. steamed bonemeal)per
--------- head
daily.
Mineral mixture
Pasture


Shelling tests were made and the estimated quantities of shelled corn
consumed were calculated from these tests.


iBaker, F. S., Jr.
High Quality Pasture.
Dec. 30, 1952.


effect of Aureomycin added to Rations of Sjuine Grazing
iimeo Rpt. 2-635. N.P.E S., May 1, 1953. rnd Mimeo Rpt.,


_1~_1_ ____~ __










A mineral mixture of two parts ground limestone, two parts s jtFmed
bonemeal, and one part salt was self-fed. Because of several cr"c of bone
fracture in the pest, steamed bonemeal was also included in the protein
supplement as previously described.

iillet posture was .vrided during the first part of the feeding period,
while native vegetation ti corn fields was used for green forage during the
latter part of the per:-o:l.

Corn from the crib wo. fed immediately after weaning, and the pigs were
finished in corn fields which were "hogged-off". There was some unavoidable
.wste in "hogging-off corn", end this is included in the quantity shown as
fed to the pigs.

RESULTS

Table 1-635 gives the litter datp for the two groups of sows. Feeding the
aursomycin supplement to the sows did not result in heavier pigs at weaning.

Table 2-635 shows the weights and gains of the different groups of pigs
from wer :'.. until marketed. The gains for the four groups were approximately
the same.

Table 3-635 contains a comparison of all the )igs receiving aureomycin
supplementation after weaning and those which were fed no antibiotic. Pig
grins and feed consumption per day, per head, and per 100 pounds gain were
about the same for the two groups. Because of the added cost of the sureomycin
spnolement, it was not economical to feed the antibiotic during this trial.

SULDARY

Supplementing a ration of corn, soybean oil meal, minerals, and excellent
non-legume pasture did nr.t increase pig gains or affect feed consumption.
Large, thrifty, uniform ,igs were used in this trial.

ACKNOOVEDGiENTT

Aurofac for this tr' l was furnished through the courtesy of Lederle
Laboratories, Pearl River, New York,









7NOTH FLOCX9I EXPERIVITT STATE ON
Q3lU;Y, FLORIDA

Table 1-635: Pigs born, pigs weanci.. Pv.d. litter' weights of so s,


Group I
Aureo "ycin
Sunil r men t.at4 on


Croup II
No
Antr ionmv1in


Number of sows
Ave. number pigs born
Ave. number pigs born alive
Ave. number pigs weaned
Ave. weight litter weaned (Ibs.)
Ave. weight per pig weaned (lbs.)
Ave. age at weaning (days)


Table 2-635. Gains of 1953 Spring Pigs.


Sows fed
aureomycin,
pigs fed
tirePomvnin


So-rs fed.
: aureomycin,
: pigs i'-t fed
: sur(," i n.


: Sows not fed: Sows not fed
: aureomycin, :sureomycin,
: pigs fed :pigs not fed
I aureomycin :aureomvyin


LTumber pigs
Number days
Average initial weight
Average initial age
Average final weight
Average final age
Average daily gain


7.25
252.50
34. 83
56.55


3
7
7
6.33
241.70
38.16
56.21


14
147
55.0
56.6
249.6
202.2
1.47


10
141
37.0
56.2
246.5
197.3
1.48


15
148

56.5
253.0
205.0
-1.47


9
134
39.4
56.2
244.4
190.4
1.53


"'~ U~


--


Suy)-,j -- cmen t I on


__ __


--*-~I.T '-_ __*' _iir'~ ^












NOR H LOaRIDA EXPZRIMRIi.? STATION
QUInTCY, FLORILA


Table 3-6351 Pigs Fed Aureomycin


versus Litter Iiates Receiving No Antibiotic.


Lar corn : E n'
97@ (Soybean oil neal : Soy";--f oil meal
(plus 7' bonprmeal : plu:: ,. bonemeal
3% (Aurofpc (Lederle) : -.----
Miner~l mixture ivinerl mixture
Pnstfere : Panture __ _


-roun I


ITumber pigs
Average initial weight
Average initial age
Average final weight
Average final age
Average gain
Average number days
Average daily gain

Feed (Average pounds per head):
Shelled corn
Protein sm~nplement
Mineral -ture
Ppsture ,' res)

Feed (Averege pounds per head daily):
Shelled corn
Protein supplement
Mineral mixture
Pasture


24
35.8
56.4
248.3
200.2
212.5
143.8
1.48


743.8
71.9
6.25
0.083


5.17
0.50-
0.043
Free access


GrouT II

24
36.5
56.4
249.8
199.5
213.3
143.1
1.49


746.1
71.6
5.15
0.083


5.21
0.50
0.036
Free access


Pounds of
Shelled
Protein
Mineral
Pasture


feed per 100 pounds gain:
corn
supplement
mixture
(acres)


* Feed cost per 100 po-7 .'" 'ain


350.00
33.82
2.94
0.042

$12.61


349.75
33.54
2.41
0.039

$11.92


*Feed prices used: Shell.ed corn, $55 ton; soybean oil meal plus 7/ bonemeal,
t95 ton; mineral mixture, $100 ton; Aurofac, $0.60 pound; millet pasture, $15 acre.


Ration


__


Pnst-orp Pngtur


- r i II