Crickets spread out to dry. Crickets can be used directly as food or ground into flour to fortify other foods. PHOTO | COURTESY
By GODFREY WERE JUMA and FRANCIS GICHUHO IRUNGU
They have become a valuable source of income to a group of farmers in Nyanza region.
Crickets
are black/brown insects that belong to the class insecta, order
Orthoptera and genus Acheta. They are categorised into two groups; house
cricket and field cricket.
It is the house cricket (Acheta
domesticus) that is widely reared in Nyanza region of Kenya, where some
organisations have trained a number of youth and women groups to empower
them with this entrepreneurial activity.
The success story
started some three years ago and many other farmers have welcomed the
idea. This art of insect rearing for commercial purposes originated from
the Netherlands, but has now spread to different parts of the world
including Kenya.
How are they reared?
Famers
in Kenya utilise buckets/crates where female adults lay fertilised eggs
under a wet cotton wool. After a month, the eggs hatch into nymphs that
feed on vegetables, soy flour and water.
It takes three months for crickets to mature into adult stage. An adult cricket weighs about 0.5-1.5grammes.
How crickets are utilised
Unlike
the conventional sources of protein such as bovine, fish and pigs,
crickets have a higher feed conversion ratio converting most of their
feed into edible portion/protein.
Harvesting is manual where the mature crickets are emptied into boiling water for about 5 minutes (blanching).
They
are then cooled in cold water before being dried in a solar drier to a
moisture content of below five per cent. This reduces the growth of
bacteria and molds, making them have an extended shelf-life and safe for
human consumption.
Crickets can be used directly as food or
ground into flour to fortify other foods. Cricket flour can be used as
an ingredient to make products such as biscuits, cakes, porridge,
chapati and mandazi. For example cricket farmers in Bondo have been
incorporating cricket flour to make different confectioneries. Their
counterparts in Kisumu have used the same in cake baking.
Their
efforts have not gone unnoticed given the fact that some cricket farmers
were invited to showcase some of these products at the Global
Entrepreneurship Summit that was held in Nairobi in July last year
during the Obama visit to Kenya.
Due to their high nutritional
value, cricket-based baked products attract high profits, where a medium
size cake costs Sh500. There is a lot of research that is going on in
institution such as Egerton University, JKUAT and Icipe to find out the
actual nutritional and other potential benefits of these insects and
their likelihood of being incorporated into many other foods and feeds.
However,
preliminary results have shown that crickets have high protein content
of over 60g/100g dry weight basis. This is higher than that of soybean
(by 49 per cent dry weight basis) and beef (by 36 per cent dry weight
basis), which are among the common conventional sources of proteins.
The
high protein content can be utilised to solve the
Protein-Energy-Malnutrition (PEM), a condition that is evident in
children suffering from kwashiorkor and marasmus. Such children appear
wasted, and stunted.
Therefore, entomophagy can contribute
towards reduction in food insecurity especially in sub-Saharan Africa.
Apart from protein, crickets are rich sources of fats, especially the
polyunsaturated fatty acids which have many health benefits, and
minerals such as iron and zinc.
These minerals are very important in children’s growth and development.
Other advantages of rearing cricket
The
climate change has resulted into unpredictable weather patterns.
Farmers are no longer able to predict rainfall patterns and as a result
the productivity of traditional crops such as maize millet, sorghum and
beans has gone down.
However, rearing of crickets is independent
of climate change. Farmers are able to rear them throughout the year and
thus their profitability is sustained.
One of the contributors of
climate change is increased emission of greenhouse gases. Compared to
crickets, cattle produces more than 300 times more greenhouse gases than
crickets per kilogram of body mass gained.
The amount of water
that is required for the growth of these insects is relatively low
compared to other animals that are reared at home. In addition, only a
small size of land is required to rear crickets. A house with an area of
four by three square metres can accommodate 100 crates of crickets.
Unlike
the conventional sources of protein such as bovine, fish and pigs,
crickets have a higher feed conversion ratio converting most of their
feed into edible portion/protein. PHOTO | COURTESYEach
crate is being sold at between Sh700 and Sh1500. Therefore a farmer
with 100 crates can fetch between Sh70, 000 and Sh150,000 within a
period of three months.
Cost of production is too low because they
feed on materials that are cheap and readily available and they are fed
twice a day — morning and evening. This practice therefore presents an
alternative farming method.
Despite their high investment returns
and high nutritional benefits, many communities have not embraced
entomophagy and insect rearing. They view insect consumption with
disgust and as a primitive practice.
In Kenya for example, only
the communities within the Western and Nyanza regions are known to
consume insects such as termites (tsiswa) and crickets (onjiri).
There is thus the need to create more awareness on the health and economic benefits of edible insects such as crickets.
With
the devolved system of governance, more resources can be channeled into
such farming projects to economically empower communities (especially
the youth) and alleviate protein malnutrition.
The demand for
these insects is increasing but the supply is still low. There is thus
the need to sensitise all stake holders on sustainable production to
meet the demands.
***
Godfrey Were Juma and Francis Gichuho Irungu, Department of Dairy and Food Science, Egerton University
***
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Wholesome food
- Preliminary results have shown that crickets have high protein content of over 60g/100g dry weight basis.
- The
high protein content can be utilised to solve the
Protein-Energy-Malnutrition (PEM), a condition that is evident in
children suffering from kwashiorkor and marasmus.
- Apart from
protein, crickets are rich sources of fats, especially the
polyunsaturated fatty acids which have many health benefits, and
minerals such as iron and zinc.
- Rearing of crickets is
independent of climate change. Farmers are able to rear them throughout
the year and thus their profitability is sustained
CREDIT: NATION MEDIA
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