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Evaluación in vitro de subproductos agrícolas y plantas con capacidad desfaunante sobre la producción de metano. Colegio de Postgraduados
Portela Díaz, Diego Felipe.
Actualmente se necesitan alternativas que disminuyan la emisión de metano asociada a la producción ganadera, una opción, es el uso de plantas que contienen metabolitos secundarios y causan la desfaunación ruminal. El presente estudio tuvo como objetivo principal, evaluar la capacidad desfaunante in vitro de diferentes plantas y subproductos agrícolas, así como su efecto en algunas variables de fermentación ruminal, población de microorganismos, producción de dióxido de carbono y metano. En la primera fase, se evaluaron 10 plantas y 6 subproductos agrícolas. El follaje del chicalote blanco (Argemone ochroleuca) y el subproducto, cascabillo de café (Coffea arabica) fueron seleccionados, ya que presentaron la mayor capacidad desfaunante. A la 96 h de...
Palavras-chave: Metano; Desfaunación; Protozoarios; Coffea arabica; Argemone ochroleuca; Methane; Defaunation; Protozoa; Ganadería; Maestría.
Ano: 2012 URL: http://hdl.handle.net/10521/1711
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The role of seed mass on the caching decision by agoutis, Dasyprocta leporina (Rodentia: Agoutidae) Rev. Bras. Zool.
Galetti,Mauro; Donatti,Camila I.; Steffler,Carla; Genini,Julieta; Bovendorp,Ricardo S.; Fleury,Marina.
It has been shown that the local extinction of large-bodied frugivores may cause cascading consequences for plant recruitment and overall plant diversity. However, to what extent the resilient mammals can compensate the role of seed dispersal in defaunated sites is poorly understood. Caviomorph rodents, especially Dasyprocta spp., are usually resilient frugivores in hunted forests and their seed caching behavior may be important for many plant species which lack primary dispersers. We compared the effect of the variation in seed mass of six vertebrate-dispersed plant species on the caching decision by the red-rumped agoutis Dasyprocta leporina Linnaeus, 1758 in a land-bridge island of the Atlantic forest, Brazil. We found a strong positive effect of seed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astrocaryum; Defaunation; Ilha Anchieta; Palms; Scatter hoarding.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000300022
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Alternatives for methane emission mitigation in livestock systems R. Bras. Zootec.
Lascano,Carlos E.; Cárdenas,Edgar.
Human activities are contributing to Global Climate Change through the production of Green House Gases (GHG), which result in increased air, land and ocean temperatures and extreme changes in precipitation in regions of low and high rainfall. The most important GHG's are carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). It is estimated that 18 % of the annual GHG emissions come from different types of livestock and that 37% of CH4, with higher global warming potential (23) relative to CO2 (1), comes from fermentation processes in ruminants. It is possible that in the future beef and milk exports from producing countries is subject to bans if cattle systems do not comply with measures to reduce GHG. There are several alternatives available and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Climate change; Defaunation; Feed chemical additives; Genetic transformation of bacteria; Greenhouse gases; Immunization; Saponins; Tannins.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300020
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