J. Anim Sci.
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J. Anim Sci. 1971. 32:1138-1142.
© 1971 American Society of Animal Science
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Effects of Housing Environment, Dietary Protein Level and Sex on Performance of Growing-Finishing Swine during Winter Seasons1

Richard C. Wahlstrom, Jacob F. Fredrikson and George W. Libal

South Dakota State University, Brookings 570062

Abstract

SEVERAL authors have reported that ambient temperatures can affect level and efficiency of performance and in some instances modify carcass development of swine (Sorensen, 1962; Bowland and MacHardy, 1962; Seymour et al., 1964; Hale, Johnson and Warren, 1968; Jensen et al., 1969; Sugahara et al., 1970). Some effects of environmental temperature on nutrient requirements have been reported by Mitchell et al. (1950) for riboflavin, by Agarwala and Sundaresan (1956) and Seymour et al. (1964) for protein and by Hale et al. (1968) for energy. It was suggested by Heitman, Kelly and Bond (1.958) and Mangold et al. (1960) that best performance of growing finishing swine was obtained when dry bulb temperature was maintained between approximately 16 and 21 C. However little research has been reported on the effects of temperatures below 0 C, which are commonly encountered in the north central region during the winter months.

The present study was conducted to evaluate the effects of housing environment, dietaryprotein level and sex on the rate and efficiency of gain of growing-finishing swine during the winter season and carcass characteristics.

Footnotes

1 Published with the approval of the Director of the South Dakota Agricultural Experiment Station as Publication No. 987 of the Journal Series.

2 Department of Animal Science.






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