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| Sardá,Luana Goulart; Higarashi,Martha Mayumi; Nicoloso,Rodrigo da Silveira; Oliveira,Paulo Armando Victória de; Falkoski,Camila; Ribeiro,Stephanie Mayara Siega; Coldebella,Arlei. |
| Abstract: The objective of this work was to contribute to the establishment of a baseline for the methane emission factor for the management of swine manure, considering the current practice of raw manure storage in two open deposits in parallel, in Southern Brazil. Methane (CH4) emissions were continuously measured in three PVC tanks of 3 m3, during 180 days, in the summer. As the content of volatile solids of pig slurry ran out in approximately 130 days, the CH4 emission factor was calculated as B0= 0.48 m3kg-1VS. Although this value is higher than the B0 estimated by Intergovernmental Panel on Climate Change for Latin America (0.29 m3 kg-1 VS), it is in agreement with the B0 estimated for developed countries (0.45 and 0.48 m3 kg-1 VS, for the US and EU,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal production; Emission factor; Global warming; Greenhouse gases; Waste management. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600657 |
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| Tomazi,Michely; Magiero,Emanuelle Cavazini; Assmann,Joice Mari; Bagatini,Tatiane; Dieckow,Jeferson; Carvalho,Paulo Cesar de Faccio; Bayer,Cimélio. |
| ABSTRACT Livestock urine and dung are important components of the N cycle in pastures, but little information on its effect on soil nitrous oxide (N2O) emissions is available. We conducted a short-term (39-day) trial to quantify the direct N2O-N emissions from sheep excreta on an experimental area of ryegrass pasture growing on a Typic Paleudult in southern Brazil. Four rates of urine-N (161, 242, 323, and 403 kg ha-1 N) and one of dung-N (13 kg ha-1 N) were applied, as well as a control plot receiving no excreta. The N2O-N emission factor (EF = % of added N released as N2O-N) for urine and dung was calculated, taking into account the N2O fluxes in the field, over a period of 39 days. The EF value of the urine and dung was used to estimate the emissions of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climate change; Emission factor; Urine; Dung; Crop-livestock system. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000501498 |
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| Mendes,Luciano B.; Tinoco,Ilda F. F.; Ogink,Nico W. M.; Rocha,Keller S. O.; Osorio S.,Jairo A.; Santos,Marilú S.. |
| This study was conducted with the aim of monitoring NH3 emissions from a mechanically and a naturally ventilated broiler house (MVB and NVB, respectively) and calculate their ammonia emission factors (fNH3). Bird stocking density was 13.5 and 11.1 birds m-2 for the MVB and NVB, respectively. The marketing age was 43 days and bedding consisted of dried coffee husks in its first time of use. Ventilation rates were calculated with the metabolic carbon dioxide mass balance method. Values of fNH3 were 0.32 ± 0.10 and 0.27 ± 0.07 g bird-1 d-1 for the MVB and NVB, respectively, and are in agreement to what was presented in other studies performed under similar conditions. The fNH3 estimated on yearly basis was 58 g bird-place-1 year-1. It was concluded that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Emission factor; Inventory; Ventilation rate; Tropical conditions. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001100013 |
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