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Edible insects produce smaller quantities of greenhouse gasses than cattle

Date:
January 9, 2011
Source:
Wageningen University and Research Centre
Summary:
Insects produce much smaller quantities of greenhouse gases per kilogram of meat than cattle and pigs. Insect meat could therefore form an alternative to more conventional types of meat.

Greenhouse gas production by insects.
Credit: Image courtesy of Wageningen University and Research Centre

Insects produce much smaller quantities of greenhouse gases per kilogram of meat than cattle and pigs. This is the conclusion of scientists at Wageningen University who have joined forces with government and industry to investigate whether the rearing of insects could contribute to more sustainable protein production. Insect meat could therefore form an alternative to more conventional types of meat.

Cattle farming worldwide is a major producer of greenhouse gases. For the assessment of the sustainability of insect meat, the researchers at Wageningen University quantified the production of greenhouse gases of several edible insect species.

The results of the study were published in the online journal PLoS ONE on 29 December.

The research team has for the first time quantified the greenhouse gases produced per kilogram of insect product. The gases concerned were methane (CH4) and nitrous oxide (N2O). The results demonstrate that insects produce much smaller quantities of greenhouse gases than conventional livestock such as cattle and pigs. For example, a pig produces between ten and a hundred times as much greenhouse gases per kilogram compared with mealworms. Emissions of ammonia (which causes the acidification and eutrophication of groundwater) also appear to be significantly lower. A pig produces between eight and twelve times as much ammonia per kilogram of growth compared to crickets, and up to fifty times more than locusts. An additional advantage of insects over mammals is that they convert their food into meat quicker.

Alternative

The study indicates that proteins originating from insects in principle form an environmentally-friendly alternative to proteins from meat originating from conventional livestock. Further research is required to ascertain whether the production of a kilogram of insect protein is also more environmentally friendly than conventional animal protein when the entire production chain is taken into account.


Story Source:

The above story is based on materials provided by Wageningen University and Research Centre. Note: Materials may be edited for content and length.


Journal Reference:

  1. Dennis G. A. B. Oonincx, Joost van Itterbeeck, Marcel J. W. Heetkamp, Henry van den Brand, Joop J. A. van Loon, Arnold van Huis. An Exploration on Greenhouse Gas and Ammonia Production by Insect Species Suitable for Animal or Human Consumption. PLoS ONE, 2010; 5 (12): e14445 DOI: 10.1371/journal.pone.0014445

Cite This Page:

Wageningen University and Research Centre. "Edible insects produce smaller quantities of greenhouse gasses than cattle." ScienceDaily. ScienceDaily, 9 January 2011. <www.sciencedaily.com/releases/2011/01/110107083737.htm>.
Wageningen University and Research Centre. (2011, January 9). Edible insects produce smaller quantities of greenhouse gasses than cattle. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2011/01/110107083737.htm
Wageningen University and Research Centre. "Edible insects produce smaller quantities of greenhouse gasses than cattle." ScienceDaily. www.sciencedaily.com/releases/2011/01/110107083737.htm (accessed July 22, 2014).

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