J. Anim Sci.
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J. Anim Sci. 1980. 50:1045-1050.
© 1980 American Society of Animal Science
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Effects of Housing Systems on Growing-Finishing Swine1

Richard C. Wahlstrom and George W. Libal2

South Dakota State University, Brookings 57007

Abstract

Three experiments were conducted with 360 growing-finishing swine to examine the effects of two housing systems — open-front with outside feeding area and enclosed building, on performance and carcass development. The ranges in outside ambient temperatures during the study were –13 to 33 C, from August to November (Exp. 1); –34 to 13, from November to February (Exp. 2), and 0 to 35 C, from May to August (Exp. 3). Minimum temperature in the enclosed building was maintained at 15 C. In Exp. 1, pigs gained faster (P<.01) and required less feed per unit gain (P<.05) from 36 to 100 kg when housed in open-front buildings. In Exp. 2, feed per unit gain was reduced (P<.05) for growing pigs housed in enclosed buildings during the winter, and moving pigs from open-front to enclosed buildings at 70 kg resulted in improved performance. However, pigs housed continuously in the enclosed building had a poorer performance. In Exp. 3, significant differences in feed consumption were observed among treatments at all growth periods, except from 54 to 73 kilograms. Less feed was consumed by pigs housed in the enclosed building. Moving pigs from enclosed to open-front buildings at 54 and 73 kg resulted in increased gains. Gains of pigs moved from open-front to enclosed buildings at 54 and 73 kg were not affected. Physical carcass measurements were not significantly affected by housing environment in this study.

Footnotes

1 Published with the approval of the Director of the South Dakota Agr. Exp. Sta. as pub. no. 1656 of the Journal Ser.

2 Dept. of Anim. Sci.






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Copyright © 1980 by the American Society of Animal Science.