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An integrated approach to crop/livestock systems: Wintering beef cows on swathed crops

Published online by Cambridge University Press:  12 February 2007

J.F. Karn ,
D.L. Tanaka ,
M.A. Liebig ,
R.E. Ries ,
S.L. Kronberg  and
J.D. Hanson
J.F. Karn
Affiliation:
US Department of Agriculture, Agricultural Research Service (USDA-ARS), Northern Great Plains Research Laboratory, PO Box 459, Mandan, ND 58554, USA,.
D.L. Tanaka*
Affiliation:
US Department of Agriculture, Agricultural Research Service (USDA-ARS), Northern Great Plains Research Laboratory, PO Box 459, Mandan, ND 58554, USA,.
M.A. Liebig
Affiliation:
US Department of Agriculture, Agricultural Research Service (USDA-ARS), Northern Great Plains Research Laboratory, PO Box 459, Mandan, ND 58554, USA,.
R.E. Ries
Affiliation:
US Department of Agriculture, Agricultural Research Service (USDA-ARS), Northern Great Plains Research Laboratory, PO Box 459, Mandan, ND 58554, USA,.
S.L. Kronberg
Affiliation:
US Department of Agriculture, Agricultural Research Service (USDA-ARS), Northern Great Plains Research Laboratory, PO Box 459, Mandan, ND 58554, USA,.
J.D. Hanson
Affiliation:
US Department of Agriculture, Agricultural Research Service (USDA-ARS), Northern Great Plains Research Laboratory, PO Box 459, Mandan, ND 58554, USA,.
*
*Corresponding author: tanakad@mandan.ars.usda.gov
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Abstract

Grain and livestock production have gradually been separated, as farmers have tended to specialize in one or the other. Some producers and scientists are beginning to question whether this is the best approach. An integrated crop/livestock project was initiated in 1999 to investigate potentially beneficial synergies to both enterprises. The cattle portion of this project involved wintering dry pregnant cows on swathed crop residue and drilled corn produced in a 3-year crop rotation, with all crops present each year. Swath grazing was initiated in mid-November of 1999, 2000 and 2001, and terminated in mid-February each year. Two replications of ten Hereford cows were rotationally grazed on swathed oat/pea and triticale crop residue and swathed drilled corn (RGSC). Comparison treatments were: cows grazing swathed western wheatgrass (SWWG) and cows fed hay in a drylot. Cows on the RGSC treatment were also fed a 20% crude protein supplement of oat/pea and triticale grain. Drilled corn was swathed in late September and western wheatgrass in early October. Three-year average winter-long weight gains for the RGSC cows were slightly lower (P<0.10) than those for drylot cows. Body condition scores generally followed the same pattern as weight gain data. Reproductive and calf performance data were not significantly different among wintering treatments. Average daily feed costs per cow over the three winters were US$0.49, 0.65 and 0.73 for RGSC, SWWG and baled hay in a drylot, respectively, providing a potential daily savings of US$0.24 per cow with the RGSC treatment compared to bale feeding in a drylot. Swath grazing did not appear to have any adverse affects on mid-aged beef cow performance and could potentially reduce winter feeding costs and manure handling problems. The main problem with swath grazing is potentially deep snow and icing of the swaths.

Keywords

drilled corntriticale strawoat/pea strawdry pregnant cows
Type
Research Article
Information
Renewable Agriculture and Food Systems , Volume 20 , Issue 4 , December 2005 , pp. 232 - 242
Copyright
Copyright © Cambridge University Press 2005

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