Management model for assessment of nitrogen flow from feed to pig manure after storage in Vietnam
| Autor: | Mogens Flindt, T. K. V. Vu, C. C. Vu, Sven G. Sommer, Jean-Michel Medoc |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Manure management
Conservation of Natural Resources Nitrogen Swine Azote Population Context (language use) engineering.material Gestion des déchets Porcin Environmental Chemistry Nitrogen flow Animals Computer Simulation education Waste Management and Disposal Water Science and Technology L02 - Alimentation animale education.field_of_study business.industry U10 - Informatique mathématiques et statistiques Environmental engineering Management model Agriculture Q70 - Traitement des déchets agricoles Modèle de simulation General Medicine Models Theoretical Manure Fumier Vietnam engineering Fertilizer système d'aide à la décision business Alimentation des animaux Ground water quality F04 - Fertilisation |
| Zdroj: | Environmental Technology Vu, T K V, Vu, C C, Médoc, J M, Flindt, M & Sommer, S G 2012, ' Management model for assessment of nitrogen flow from feed to pig manure after storage in Vietnam ', Environmental Technology, vol. 33, no. 6, pp. 725-731 . https://doi.org/10.1080/09593330.2011.592223 |
| DOI: | 10.1080/09593330.2011.592223 |
| Popis: | Nitrogen (N) losses from pig production and the recycling of N from manure to crops can harm the atmosphere, soil and ground water quality. This study intended to build a dynamic management model, adapted to the Vietnamese context, that links the N flow at all stages along the manure management chain from the N in the diets fed to grower-finisher pigs to the application of the manure in the field. The model assesses N contents and losses at each stage of manure management so that application of manure N can be adjusted to ensure optimal fertilizer value, while at the same time minimizing environmental damage. This model provides a tool for examining the N flow on pig farms, to adjust the N content of feeds, the pig population, and to minimize N discharge and emissions. The model is developed using Powersim® software and data from feed-excretion, storage and composting experiments. For validation and performance of the model we used sub-datasets from feed-excretion experiments in Denmark and Vietnam that were not used to parameterize in the model. This article presents the development of the model and trial of the model through scenario analyses of pig production in livestock production zones. The objective is that policy makers, extension officers or agricultural advisors will use the model as a support management tool to formulate and adjust manure management practices. This includes assessment of the land carrying capacity in existing livestock production areas and of maximum acceptable manure loads in planned livestock production zones. |
| Databáze: | OpenAIRE |
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