SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

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	CIGR Journal (2)
	AgEcon (1)
	Rev. Bras. Ciênc. Avic. (1)

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	Info:eu-repo/semantics/article (2)
	Journal Article (1)

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	2017 (1)
	2015 (2)
	2007 (1)

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	China (2)
	Brazil (1)
	United States (1)

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Multiple Environmental Externalities and Manure Management Policy

AgEcon

Key, Nigel D.; Kaplan, Jonathan D..

This paper considers the economic and environmental implications of regulating water and air nitrogen emissions under single and multi-environmental media policies in the U.S. hog industry. We examine tradeoffs from policies designed to correct an externality in one medium, when there are multiple environmental externalities. We separately and jointly analyze: (a) nitrogen land application restrictions consistent with recently adopted EPA requirements under the Clean Water Act, and (b) hypothetical air quality restrictions under the Clean Air Act, both with and without EQIP payments available to mitigate the costs of complying with nutrient application regulations.

Tipo: Journal Article

Palavras-chave: Ammonia emission; Livestock waste; Mathematical programming; Multiple externalities; Nutrient management; Environmental Economics and Policy; Livestock Production/Industries.

Ano: 2007

URL: http://purl.umn.edu/8601

Effects of Cassava (Manihot Esculenta Crantz) Root Meal in Diets Containing Corn Dried Distillers Grains With Solubles on Production Performance, Egg Quality, and Excreta Noxious Gas Emission in Laying Hens

Rev. Bras. Ciênc. Avic.

Lei,XJ; Park,JH; Hosseindoust,A; Kim,IH.

ABSTRACT This study was conducted to evaluate effects of cassava (Manihot esculenta Crantz) root meal (CRM) in laying hen diets containing corn dried distiller grains with soluble (DDGS) on production performance, egg quality, and excreta noxious gas emission. Two hundred and forty Hy-Line brown laying hens (40 weeks of age) were randomly divided into 1 of 4 dietary treatments (10 replications with 6 hens per replication) for 6 weeks. The dietary treatments were as follows: 1) corn-based diet (CON); 2) diet containing 10% CRM and 8% DDGS (CRM10); 3) diet containing 20% CRM and 8% DDGS (CRM20); 4) diet containing 30% CRM and 8% DDGS (CRM30). The inclusion of 30% CRM in the diet containing 8% DDGS significantly decreased (p<0.05) average daily feed intake...

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Ammonia emission; Cassava root meal; Corn dried distillers grains with solubles; Egg quality; Production performance..

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200239

Measurement Method for Urine Puddle Depth in Dairy Cow Houses as Input Variable for Ammonia Emission Modelling

CIGR Journal

Dennis J.W. Snoek.

Dairy cow houses are a major contributor to ammonia (NH3) emission in many European countries. To understand and predict NH3 emissions from cubicle dairy cow houses a mechanistic model was developed and a sensitivity analysis was performed to assess the contribution to NH3 emission of each input variable related to a single urine puddle. Results showed that NH3 emission was most sensitive for five puddle related input variables: pH, depth, initial urea concentration, area and temperature. Unfortunately, cow house data of these variables are scarce due to a lack of proper measurement methods. In this study we focused on a method to assess the urine puddle depth, which can vary between 0.10 mm and 2.00 mm. Our objective was to develop a measurement method...

Palavras-chave: Cow urine; Puddle depth; Ammonia emission; The Netherlands.

Ano: 2015

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3164