J. Anim Sci.
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J. Anim Sci. 1988. 66:1067-1072.
© 1988 American Society of Animal Science
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A Modified Reduced Nocturnal Temperature Regimen for Early-Weaned Pigs1,2,

M. C. Brumm3 and D. P. Shelton4

University of Nebraska,5, Concord 68728

Abstract

A four-trial experiment utilizing 3- to 4-wk-old newly weaned pigs was conducted to evaluate the effect of a modified reduced nocturnal (MRNT) nursery temperature regimen on weaned pig and subsequent grower-finisher performance. Nursery treatments were 1) a control temperature (CT) regimen of 30°C constant air temperature lowered 2 C°/wk and 2) a regimen beginning 1 wk after weaning in which the temperature from 1900 to 0700 was lowered 6°C from CT. Weaned pigs gained faster (P < .01) in the MRNT treatment than in the CT treatment, with gains in Trials 1, 2, 3 and 4 being .39 vs .37, .28 vs .27, .38 vs .37 and .39 vs .36 kg/d, respectively. This improvement in gain was due to an increase (P < .005) in feed intake for the same periods (.60 vs .58; .48 vs .42; .59 vs .58; .63 vs .58 kg/d). There was no difference in feed conversion (P > .1). There was no effect (P > .1) of MRNT vs CT on subsequent performance to slaughter weight for average daily gain (.69 vs .69 kg/d), average daily feed (2.22 vs 2.23 kg/d) or gain/feed (.31 vs .31). These results support the conclusions that weaned pigs eat more feed and gain faster with a reduced nocturnal temperature scheme and that there are no carry-over effects during the growing-finishing phase.

Footnotes

1 Journal series No. 8437, Agric. Res. Div., Univ. of Nebraska.

2 The authors acknowledge the assistance of Dennis Forsberg with animal care and Jim Dahlquist and Kevin Fairbanks with data collection and analysis.

3 Dept. of Anim. Sci.

4 Dept. of Agric. Eng.

5 Northeast Res. and Ext. Center.






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Copyright © 1988 by the American Society of Animal Science.