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Re: Overbefolkning
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Glenn
Jan 18, 2014, 11:55:18 AM1/18/14
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On 18/01/14 13.57, alexbo wrote:
>
> "Steen" skrev
>
>> Ikke specielt videnskabligt, men jeg er pt ved at l�se Inferno af Dan
>> Brown.
>> Temaet i den bog er verdens overbefolkning, som angiveligt er dobbelt
>> s� stor som et b�redygtigt antal. Er der noget om at det skulle v�re
>> korrekt?
>
> N�h det kan jeg ikke tro, i betragtning af landbruget kunne v�re langt
> bedre i meget store dele af verden kan vi sagtens f�de mange flere
> mennesker.
...
>
> mvh
> Alex Christensen
>
>
(Svar til dk.videnskab)
Hej Alex
Hvis vi alle ikke spiser k�d - og vi g�r over til CO2-neutral energi,
n�r der er muligt, ville det v�re b�redygtigt.
Det er ti gange s� ineffektivt at spise k�d(protein), medmindre vi
spiste insekter - og hvem har lyst til det :-) :
15. august 2010, Norsk forsker anbefaler.
Spis insekter og red milj�et:
http://www.bt.dk/foedevarer/spis-insekter-og-red-miljoeet
What is Entomophagy?:
http://www.insectsarefood.com/what_is_entomophagy.html
Citat: "...
According to the Entomological Society of America insects generally
contain more protein and are lower in fat than traditional meats. In
addition they have about 20 times higher food conversion efficiency than
traditional meats. In other words they have a better feed-to-meat ratio
than beef, pork, lamb or chicken.
...
Insects reproduce at a much quicker rate than cattle, are much easier to
raise and need far less living space and are able to feed off of much
less feed than traditional livestock require.
According to the University of Ohio�s Department of Entomology Fact
Sheet Findings, if Americans could tolerate more insects in what they
eat, farmers could significantly reduce the amount of pesticides applied
each year. It�s also important to note that in farming and raising
insects, there would be no labor intensive butchering of animals, no
back-breaking farm work, no need for tractors, and no need for
veterinary bills.
..."
5. environmental opportunities for insect rearing for food and feed:
http://www.fao.org/docrep/018/i3253e/i3253e05.pdf
Citat: "...
Livestock and fish are important sources of protein in most countries.
According to FAO (2006), livestock production accounts for 70 percent of
all agricultural land use.
...
Pimentel and Pimentel (2003) calculated that for 1 kg of high-quality
animal protein, livestock are fed about 6 kg of plant protein.
Feed-to-meat conversion rates (how much feed is needed to produce a 1 kg
increase in weight) vary widely depending on the class of the animal and
the production practices used. Typically, 1 kg of live animal weight in
a typical United States production system requires the following amount
of feed: 2.5 kg for chicken, 5 kg for pork and 10 kg for beef (Smil,
2002). Insects require far less feed.
For example, the production of 1 kg of live animal weight of crickets
requires as little as 1.7 kg of feed (Collavo et al., 2005)
..."
Wageningen University and Research Centre (2011, January 9). Edible
insects produce smaller quantities of greenhouse gasses than cattle.
ScienceDaily:
http://www.sciencedaily.com/releases/2011/01/110107083737.htm
Glenn
>
> "Steen" skrev
>
>> Ikke specielt videnskabligt, men jeg er pt ved at l�se Inferno af Dan
>> Brown.
>> Temaet i den bog er verdens overbefolkning, som angiveligt er dobbelt
>> s� stor som et b�redygtigt antal. Er der noget om at det skulle v�re
>> korrekt?
>
> N�h det kan jeg ikke tro, i betragtning af landbruget kunne v�re langt
> bedre i meget store dele af verden kan vi sagtens f�de mange flere
> mennesker.
...
>
> mvh
> Alex Christensen
>
>
(Svar til dk.videnskab)
Hej Alex
Hvis vi alle ikke spiser k�d - og vi g�r over til CO2-neutral energi,
n�r der er muligt, ville det v�re b�redygtigt.
Det er ti gange s� ineffektivt at spise k�d(protein), medmindre vi
spiste insekter - og hvem har lyst til det :-) :
15. august 2010, Norsk forsker anbefaler.
Spis insekter og red milj�et:
http://www.bt.dk/foedevarer/spis-insekter-og-red-miljoeet
What is Entomophagy?:
http://www.insectsarefood.com/what_is_entomophagy.html
Citat: "...
According to the Entomological Society of America insects generally
contain more protein and are lower in fat than traditional meats. In
addition they have about 20 times higher food conversion efficiency than
traditional meats. In other words they have a better feed-to-meat ratio
than beef, pork, lamb or chicken.
...
Insects reproduce at a much quicker rate than cattle, are much easier to
raise and need far less living space and are able to feed off of much
less feed than traditional livestock require.
According to the University of Ohio�s Department of Entomology Fact
Sheet Findings, if Americans could tolerate more insects in what they
eat, farmers could significantly reduce the amount of pesticides applied
each year. It�s also important to note that in farming and raising
insects, there would be no labor intensive butchering of animals, no
back-breaking farm work, no need for tractors, and no need for
veterinary bills.
..."
5. environmental opportunities for insect rearing for food and feed:
http://www.fao.org/docrep/018/i3253e/i3253e05.pdf
Citat: "...
Livestock and fish are important sources of protein in most countries.
According to FAO (2006), livestock production accounts for 70 percent of
all agricultural land use.
...
Pimentel and Pimentel (2003) calculated that for 1 kg of high-quality
animal protein, livestock are fed about 6 kg of plant protein.
Feed-to-meat conversion rates (how much feed is needed to produce a 1 kg
increase in weight) vary widely depending on the class of the animal and
the production practices used. Typically, 1 kg of live animal weight in
a typical United States production system requires the following amount
of feed: 2.5 kg for chicken, 5 kg for pork and 10 kg for beef (Smil,
2002). Insects require far less feed.
For example, the production of 1 kg of live animal weight of crickets
requires as little as 1.7 kg of feed (Collavo et al., 2005)
..."
Wageningen University and Research Centre (2011, January 9). Edible
insects produce smaller quantities of greenhouse gasses than cattle.
ScienceDaily:
http://www.sciencedaily.com/releases/2011/01/110107083737.htm
Glenn
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