Cuantificación de las emisiones de GEI en dos especies de insectos comestibles (Blaptica dubia y Gryllus assimilis): análisis del efecto de la dieta
Date
2021
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
En la búsqueda de soluciones para mitigar los impactos ambientales en la producción de proteína
animal, se ha incentivado la entomófagia como una opción viable. Con el fin de evaluar la
sustentabilidad y el impacto ambiental de esta práctica, especialmente en la reducción de Gases de
Efecto Invernadero (GEI), se llevó acabo un experimento para determinar factores de emisión de
metano (CH4) y de dióxido de carbono (CO2) empleando dos dietas de calidad diferenciada:
alimento balanceado vs. verduras, en dos especies de insectos Blaptica dubia (Bd) y Gryllus
assimilis (Ga).
En la emisión de CH4 hubo diferencias estadísticamente significativas entre Ga y Bd (p<0.001):
en Ga fue prácticamente nula; en Bd se observa una tendencia a la diferenciación entre
tratamientos, obteniéndose 0.00425±0.00058 y 0.01±0.0015 g/d para balanceado y verdura
respectivamente (p=0.056). La emisión de CO2 fue mayor en Ga (3.86±1.29 y 4.11±1.87 g/d) para
balanceado y verdura respectivamente (p=0.770) versus Bd (1.50±0.45 y 1.87±0.78 g/d) para
balanceado y verdura respectivamente (p=0.261). Tomando la emisión de CH4 como un indicador
ambiental, es posible realizar una comparación con las emisiones típicas de este gas en algunas de
las fuentes principales de provisión de proteína animal. Con los resultados de este trabajo se obtuvo
una emisión de 0.04±0.01 g CH4/kg PV/d en Bd mientras que, en la ganadería bovina, se han
obtenido valores en el rango de 0.55 g CH4/kg PV/d. De esta manera, se concluye que la emisión
de CH4 producida en insectos, en este caso para Blaptica, es significativamente menor (inferior al
10 %
In the search for solutions to mitigate the environmental impacts on the production of animal protein, entomophagy has been encouraged as a viable option. In order to assess the sustainability and environmental impact of this practice, especially in the reduction of greenhouse Gases (GHG), an experiment was conducted to determine methane (CH4) and carbon dioxide (CO2) emission factors using two diets of differentiated quality, balanced feed vs. vegetables, in two species of insects, Blaptica dubia (Bd) vs. Gryllus assimilis (Ga). In the emission of CH4 there were statistically significant differences between Ga and Bd (p<0.001): in Ga it was close to zero; in Bd there is a tendency to differentiation between treatments, obtaining 0.00425±0.00058 and 0.01±0.0015 g / d for balanced feed and vegetable respectively (p=0.056). The CO2 emission was higher in Ga (3.86±1.29 and 4.11±1.87 g / d for balanced feed and vegetable respectively, p=0.770) versus Bd (1.50±0.45 and 1.87±0.78 g / d for balanced feed and vegetable respectively, (p=0.261). Taking account the emission of CH4 as an environmental indicator, it is possible to compare it with typical emissions of this gas in typical sources of animal protein supply. The results of this study was an emission of 0.04±0.01 g CH4/kg PV / d in Bd. In beef cattle production systems typical emission values are in the range of 0.55 g CH4/kg PV / d. We can conclude that the emission of CH4 produced in insects, in this case for Blaptica, is significantly lower (less than 10 %).
In the search for solutions to mitigate the environmental impacts on the production of animal protein, entomophagy has been encouraged as a viable option. In order to assess the sustainability and environmental impact of this practice, especially in the reduction of greenhouse Gases (GHG), an experiment was conducted to determine methane (CH4) and carbon dioxide (CO2) emission factors using two diets of differentiated quality, balanced feed vs. vegetables, in two species of insects, Blaptica dubia (Bd) vs. Gryllus assimilis (Ga). In the emission of CH4 there were statistically significant differences between Ga and Bd (p<0.001): in Ga it was close to zero; in Bd there is a tendency to differentiation between treatments, obtaining 0.00425±0.00058 and 0.01±0.0015 g / d for balanced feed and vegetable respectively (p=0.056). The CO2 emission was higher in Ga (3.86±1.29 and 4.11±1.87 g / d for balanced feed and vegetable respectively, p=0.770) versus Bd (1.50±0.45 and 1.87±0.78 g / d for balanced feed and vegetable respectively, (p=0.261). Taking account the emission of CH4 as an environmental indicator, it is possible to compare it with typical emissions of this gas in typical sources of animal protein supply. The results of this study was an emission of 0.04±0.01 g CH4/kg PV / d in Bd. In beef cattle production systems typical emission values are in the range of 0.55 g CH4/kg PV / d. We can conclude that the emission of CH4 produced in insects, in this case for Blaptica, is significantly lower (less than 10 %).
Description
Keywords
FACTORES DE EMISIÓN, GASES DE EFECTO INVERNADERO, INSECTOS, CÁMARAS ESTÁTICAS
Citation
Collections
Endorsement
Review
Supplemented By
Referenced By
Creative Commons license
Except where otherwised noted, this item's license is described as info:eu-repo/semantics/openAccess