Comparison of Season-Long Grazing Applied Annually and a 2-Year Rotation of Intensive Early Stocking Plus Late-Season Grazing and Season-Long Grazing |
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| Authors: | Clenton E Owensby Lisa M Auen |
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| Institution: | 1. Professor of Range Management Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA.;2. Assistant Scientist in Range Management, Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA.;1. Ecologist, USDA-ARS, Eastern Oregon Agricultural Research Center, Burns, OR 67826, USA;2. Assistant Professor, Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT 84642, USA;3. Professor, Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT 84642, USA;4. Associate Professor, Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT 84642, USA;5. Professor, Department of Horticulture, Cornell University, Geneva, NY 14456, USA;1. Assistant Professors and Professor, Department of Forest, Rangeland, and Fire Sciences, University of Idaho, Moscow, ID 83844, USA.;2. Assistant Professors and Professor, Department of Forest, Rangeland, and Fire Sciences, University of Idaho, Moscow, ID 83844, USA.;1. Soil Scientist, US Department of Agriculture–Agricultural Research Service, Great Basin Rangelands Research Unit, Reno, NV 89512, USA;2. Research Technician, US Department of Agriculture–Agricultural Research Service, Great Basin Rangelands Research Unit, Reno, NV 89512, USA;1. Professor, Department of Natural Resource Management, South Dakota State University, Brookings, SD 57007, USA;2. Professor, Department of Natural Resource Management, South Dakota State University, West River Agricultural Center, Rapid City, SD 57702, USA;3. former Livestock Educator, currently residing in Aurora, SD 57002, USA;1. Professor, Department of Agriculture, Food, and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada;2. Research Scientist, Lethbridge Research Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada;3. Graduate Student, Department of Agriculture, Food, and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada;4. Provincial Rangeland Specialist, Alberta Sustainable Resource Development, Lands Division, Pincher Creek, AB, T0K 1W0 Canada |
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| Abstract: | This research measured steer gains, aboveground biomass remaining at the end of the growing season, and economic returns of tallgrass prairie grazed under season-long stocking (SLS-C) and a grazing system that included a 2-yr rotation of SLS-rotated (SLS-R) and intensive early stocking (IES; 2× normal stocking rate) + late-season grazing at the normal stocking rate (IES + LSG-R). We hypothesized that even though the stocking rate on the IES + LSG-R pasture was above the recommended rate, the greater regrowth availability in the late season would result in steers gaining as well as or better than those stocked SLS at the normal rate. By rotating the IES + LSG treatment with SLS over 2 yr, we anticipated that the aboveground biomass productive capacity of the IES + LSG pasture would be restored in one growing season. Further, we hypothesized that the increased stocking rate with IES + LSG would increase net profit. Comparing traditional season-long stocking to the system, which was a combination of SLS and IES + LSG rotated sequentially over a 2-yr period, the system increased steer gains by 7 kg · hd?1 and by 30 kg · ha?1, had a consistent reduction of 429 kg · ha?1 biomass productivity, and increased net profit by $55.19 per steer and $34.28 per hectare. |
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