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Short communication: Identifying challenges and opportunities for improved nutrient management through the USDA's Dairy Agroecosystem Working Group.
Holly, M A; Kleinman, P J; Bryant, R B; Bjorneberg, D L; Rotz, C A; Baker, J M; Boggess, M V; Brauer, D K; Chintala, R; Feyereisen, G W; Gamble, J D; Leytem, A B; Reed, K F; Vadas, P A; Waldrip, H M.
Afiliación
  • Holly MA; USDA-Agricultural Research Service Pasture Systems and Watershed Management Research Unit, University Park, PA 16803. Electronic address: mike.holly@ars.usda.gov.
  • Kleinman PJ; USDA-Agricultural Research Service Pasture Systems and Watershed Management Research Unit, University Park, PA 16803.
  • Bryant RB; USDA-Agricultural Research Service Pasture Systems and Watershed Management Research Unit, University Park, PA 16803.
  • Bjorneberg DL; USDA-Agricultural Research Service Northwest Irrigation and Soils Research Unit, Kimberly, ID 83341.
  • Rotz CA; USDA-Agricultural Research Service Pasture Systems and Watershed Management Research Unit, University Park, PA 16803.
  • Baker JM; USDA-Agricultural Research Service Soil and Water Management Research Unit, Saint Paul, MN 55108.
  • Boggess MV; USDA-Agricultural Research Service US Dairy Forage Research Center, Madison, WI 53706.
  • Brauer DK; USDA-Agricultural Research Service Conservation and Production Research Laboratory, Bushland, TX 79012.
  • Chintala R; Innovation Center for U.S. Dairy, Rosemont, IL 60018.
  • Feyereisen GW; USDA-Agricultural Research Service Soil and Water Management Research Unit, Saint Paul, MN 55108.
  • Gamble JD; USDA-Agricultural Research Service Soil and Water Management Research Unit, Saint Paul, MN 55108.
  • Leytem AB; USDA-Agricultural Research Service Northwest Irrigation and Soils Research Unit, Kimberly, ID 83341.
  • Reed KF; USDA-Agricultural Research Service US Dairy Forage Research Center, Madison, WI 53706.
  • Vadas PA; USDA-Agricultural Research Service US Dairy Forage Research Center, Madison, WI 53706.
  • Waldrip HM; USDA-Agricultural Research Service Conservation and Production Research Laboratory, Bushland, TX 79012.
J Dairy Sci ; 101(7): 6632-6641, 2018 Jul.
Article en En | MEDLINE | ID: mdl-29705411
Nutrient management on US dairy farms must balance an array of priorities, some of which conflict. To illustrate nutrient management challenges and opportunities across the US dairy industry, the USDA Agricultural Research Service Dairy Agroecosystems Working Group (DAWG) modeled 8 confinement and 2 grazing operations in the 7 largest US dairy-producing states using the Integrated Farm System Model (IFSM). Opportunities existed across all of the dairies studied to increase on-farm feed production and lower purchased feed bills, most notably on large dairies (>1,000 cows) with the highest herd densities. Purchased feed accounted for 18 to 44% of large dairies' total operating costs compared with 7 to 14% on small dairies (<300 milk cows) due to lower stocking rates. For dairies with larger land bases, in addition to a reduction in environmental impact, financial incentives exist to promote prudent nutrient management practices by substituting manure nutrients or legume nutrients for purchased fertilizers. Environmental priorities varied regionally and were principally tied to facility management for dry-lot dairies of the semi-arid western United States (ammonia-N emissions), to manure handling and application for humid midwestern and eastern US dairies (nitrate-N leaching and P runoff), and pasture management for dairies with significant grazing components (nitrous oxide emissions). Many of the nutrient management challenges identified by DAWG are beyond slight modifications in management and require coordinated solutions to ensure an environmentally and economically sustainable US dairy industry.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bovinos / Industria Lechera / Alimentación Animal / Fenómenos Fisiológicos Nutricionales de los Animales Tipo de estudio: Prognostic_studies Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: J Dairy Sci Año: 2018 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bovinos / Industria Lechera / Alimentación Animal / Fenómenos Fisiológicos Nutricionales de los Animales Tipo de estudio: Prognostic_studies Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: J Dairy Sci Año: 2018 Tipo del documento: Article Pais de publicación: Estados Unidos