J. Anim Sci.
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J. Anim Sci. 1984. 58:801-804.
© 1984 American Society of Animal Science
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Effect of Space Allowance and Antibiotic Feeding on Performance of Nursery Pigs1

NCR-89 Committee on Confinement Management of Swine1,2,3,

Iowa Agriculture and Home Economics Experiment Station, Ames 50011

Abstract

The relationship between space allowance and feeding antibiotics to pigs weaned at 3 to 6 wk of age was investigated in a cooperative study that involved nine experiment stations in the North Central Region of the United States. Treatments, arranged factorially, were control vs antibiotics (110 mg chlortetracycline, 110 mg sulfamethazine and 55 mg penicillin/kg of diet) and .14 vs .23 m2 of floor space/pig. Treatments were replicated 45 times, utilizing 1,724 pigs. Pigs allowed .23 m2, compared with .14 m2, had 10.6% greater (P<.01) rate of gain and 3.6% improved (P<.05) feed/gain. Pigs fed antibiotics had 13.2% faster (P<.01) rate of gain and 4.7% improved (P<.01) feed/gain in the 4-wk experimental period. There were no interactions between antibiotic and space allowance for performance measurements, except for average daily gain (P<.05) in the 0 to 3 wk period. In this period the antibiotic response was greater among pigs allowed .23 m2, as compared with those allowed .14 m2.

Footnotes

1 Journal Paper No. J-10934 of the Iowa Agr. and Home Econ. Exp. Sta., Ames. Project No 2356.

2 The Committee during the study included: R. Arthur, SIU; M. C. Brumm, NE; R. Christenson, US-MARC; S. G. Cornelius, MN; S. E. Curtis, IL; R. H. Hines, KS; M. Hogberg, MI; G. W. Jesse, MO; H. W. Jones, IN; K. W. Kelley, WA; V. Leibbrandt, WI; G. W. Libal, SD; B. D. Moser, NE; R. L. Moser, MN; T. L. Veum, MO; R. F. Wilson, OH; R. L. Witz, ND; D. R. Zimmerman, IA. Administrative advisors were B. R. Baumgardt, IN and J. Hoefer, MI.

3 Manuscript prepared by D. R. Zimmerman.






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