In my first blog, “Animal welfare in insect farms”, I discussed why insect farming is more sustainable than livestock farming. On 17th of January 2015 an article “Are those edible bugs actually sustainable?” was released on MacLean’s website. In the article, Ben Reade is questioning the sustainability of insect farming, but he is doing it by making statements with no real arguments and cutting corners. The first quote from him in the article is: “Everyone has been making a lot of hype about insects and sustainability and most of that hype is crap.” Admittedly, the tone of this article is most likely deliberately provocative, maybe to make people like me write about the same subject! Later on, a chef called Nathan Isberg is also interviewed, but first let’s start by breaking down some of the misconceptions from the article given by Mr Reade:
..“No one spoke about the fact that, in order to ship those insects around the world, they were mostly being bred in Holland and had to be kept at 28° C—and that’s energy-intensive,” says Reade. “And then they were to be freeze-dried, which is just about the most energy-intensive form of preservation on the planet.”
- Obviously, when the demand for insect products grows, the insect will be industrially farmed all around the world, not only in Holland where the industry at the moment is booming the most. When looking at the production and logistics of insects, it is relevant to compare it to the substitute. For example, what is the difference in the sustainability of logistics of freeze-dried crickets going from Holland to Brazil compared to Brazilian beef and soya beans coming to Europe? The logistics have very little impact on the total environmental footprint of food; over 90 % comes from the manufacturing.
- There are three popular insects farmed at industrial level at the moment. From the three, only the house cricket is associated with high energy consumption related to the heating of its environment. The other two, namely the black soldier fly and mealworm, are farmed in large crowds and as such are heating their environment themselves.
- Freeze-drying is associated only with the house cricket, and only if the insects are shipped to customers without processing as a whole. There are already products like protein bars, as mentioned in the article, that are made out of insect flour. The flour is shipped dry and at room temperature. The freeze-drying will not be the most common form of insect product handling. Again, compared to livestock products, the majority of meat products must be moved and stored in cool temperature.
Nathan Isberg, a chef, is also interviewed in the article. He says, among other things:
“Insects are less and less a realistic response to our current agriculture. Reducing protein consumption would be a better answer”
This is a true statement, but the problem here is that the demand of protein is expected to grow, not reduce. The growth is driven by the growing middle class of big countries like China and India. From my perspective there is very little that can be done to change people’s desire for proteins, so the answer is not to hope for and promote less protein consumption, but to provide a new protein source; the insects.
“These crickets you get from farms—they taste like fish because they’re being fed fish food. So you get a cricket, you feed it fish, and you feed the cricket to the fish and you get a fish. That’s the reality.”
Well no, that is not the reality. First of all, crickets are not fed to fish. If a fish farm is using some insects for feed it is the larvae of black soldier fly, not the cricket. Feeding fish based products to crickets is expensive and cannot be done on a large scale and expected to be profitable. There are multiple better ways of feeding crickets than with fish meal.
Ps. If Mr Isberg’s last comment is really true and there is an insect farm feeding crickets fish meal and a fish farm feeding crickets to fish, please, farmers – do yourselves a favour and contact me! I can give somefree tips to save you a lot of time and money. Or maybe just read a book, like Mass Production of Beneficial Organisms.
Links to the article “Are those edible bugs actually sustainable?”: