More Protein - whoops

[Guest guest]

This across my desktop today.

 

best,

pat - canada

 

More milk protein in Cloned cows

 

A team in New Zealand say they have produced nine duplicate, transgenic

calves whose milk boosted yields of two types of proteins by up to 100

per

cent.

 

27/01/2003

 

SCIENTISTS have produced the world`s first genetically modified, cloned

cows

- a breakthrough that is set to become the latest controversy in the

biotech

business. A team in New Zealand say they have produced nine duplicate,

transgenic calves whose milk boosted yields of two types of proteins by

up to

100 percent.

 

The two proteins help liquid cheese to solidify and expel whey, a

by-product

that is UNWANTED in cheese making. The researchers, led by Goetz Laible

at

Ruakura Research Centre in Hamilton, south of Auckland, say the

technique

offered " substantial economic gains " . It could be widened, to " tailor "

milk

for human consumption, they add. Scientists have genetically modified

and

cloned farm animals for medical research. But this is the first time a

cow

has been both engineered and cloned to produce an altered milk for human

 

consumption. Dr Laible`s team inserted into a bovine cell two additional

 

genes responsible for two casein proteins, beta and kappa. The modified

cell

was then fused with an egg whose core had been removed, the standard

technique in cloning, and the embryo implanted into a cow uterus. Out of

126

transgenic, cloned embryos, just 11 (nine per cent) survived to become

healthy, viable calves. That was even lower than the 20 per cent success

rate

among non-transgenic cloning, whose toll reflects the many risks from

genetic

duplication.

 

Source: Herald Sun

--

PAT (In London, Ontario)

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