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Financial indicators to evaluate the economic performance of feedlot steers with different slaughter weights Ciência Rural
Fabricio,Edom de Avila; Pacheco,Paulo Santana; Vaz,Fabiano Nunes; Lemes,Daniel Batista; Camera,Angelina; Machado,Gabriella Ibarra Ocaña.
ABSTRACT: The objective of this study was to evaluate various financial indicators, estimated deterministically (considering historical quotes twelve consecutive years - 2003 to 2014), on the economic feasibility of finishing steers commercialized with different weights, using the simulation technique. Performance data steers were simulated with average initial weight of 350kg, fed in feedlot and slaughtered with 410, 440, 470, 500, 530, 560 and 590kg. The feeding period varies from 46 to 185 days, respectively. Based in various economic indicators, the viability of the investment decreased linearly according to the increase in slaughter weight. The coefficient of simple linear regression and means from lowest to highest slaughter weight were,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Economic analysis; Beef cattle; Investment projects; Intensive systems; Microeconomics.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300931
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Necessidade de instrumentação para monitorar nitrato no perfil de solo, em tempo real. Repositório Alice
PRIMAVESI, O.; PRIMAVESI, A. C. P. de A.; CAMARGO, A. C. de; PEDROSO, A. de F..
1998
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Fertilizante nitrogenado; Nitrato no solo; Pastagens; Sistema intensivo; Monitoramento; Nitrogen use; Nitrate; Pasture; Intensive systems; Monitoring.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/handle/doc/44335
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New developments in recirculating aquaculture systems in Europe: A perspective on environmental sustainability ArchiMer
Martins, C. I. M.; Eding, E. H.; Verdegem, M. C. J.; Heinsbroek, L. T. N.; Schneider, O.; Blancheton, Jean-paul; Roque D'Orbcastel, Emmanuelle; Verreth, J. A. J..
The dual objective of sustainable aquaculture, i.e., to produce food while sustaining natural resources is achieved only when production systems with a minimum ecological impact are used. Recirculating aquaculture systems (RASs) provide opportunities to reduce water usage and to improve waste management and nutrient recycling. RAS makes intensive fish production compatible with environmental sustainability. This review aims to summarize the most recent developments within RAS that have contributed to the environmental sustainability of the European aquaculture sector. The review first shows the ongoing expansion of RAS production by species and country in Europe. Life cycle analysis showed that feed, fish production and waste and energy are the principal...
Tipo: Text Palavras-chave: Intensive systems; Ecological impact; Waste; Water re-use; Denitrification.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00021/13190/10273.pdf
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