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B-B-Bovine Somatotropin

G-G-Good times

nicole abbott

on 6 May 2010

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Transcript of B-B-Bovine Somatotropin

Bovine Somatotropin Molecular Biology In 1994, the Monsanto company in the U.S. developed a recombiant version of bST. brand-named Posilac. It is produced through a genetically engineered E. coli. The gene that codes for bST is inserted into the DNA of E. coli bacterium. Then the bacteria are broken up and seperated from the rBST which is then is purified so it can produce the injectable hormone. When this is injected into a dairy cow, milk production can increase by 10-15%. Health And Safety Animal and Human Risk In 1991, serious health problems were discovered in rBST injected cows. Problems included a rise in the number of deformed calves and an increase in mastitis, which is a painful bacterial infection of the udders which causes swelling, and puss and blood secretions into milk.
Cows that are forced to produce higher quantities of milk can become malnourished because they are loosing more nutrients through their milk that they ingest through their feed. Cows are put under a large amount of stress and are more likely to not live as long as other cows. To treat the cows with health problems from rBST, farmers use antibiotics. Milk from rBST treated cows contain a higher level of IGF-1 (insulin growth factor-1) and humans also naturally have IGF-1. An increase of this in humans have been linked to colon and breast cancer. Economics The use of Bovine Somatotropin is approved in all states other than Pennsylvania which banned the use of it on Febuary 1, 2008. Regulations and
Policies Health Canada go through a lot when attempting to figure out what to do with certain biological technologies such as bST. They look for things such as how the hormone would impact human and animal health, diseases, and the environment. Due to these regulations, it makes sense that bST has been named illigal in Canada. Studies have shown that this hormone affects the animals thenselves, and have also shown that it could have adverse effects on some people. There is also the issue of some people not wanting to drink milk that has been "treated" and there would be a preference from many people to only want to drink clean, straight up milk that was made naturally, not enhanced by this growth hormone. Some possible modifications that could be made to bST to constitute its legalization in Canada is to remove the risks. We have oodles and oodles of technology at our disposal, and if we could make bST less harmful to the animals and humans that it comes in contact with, i cannot see legalization being that big of a problem.
Other tests that could be preformed on bST would be to have a look at how exactly this hormone would affect the environment and weather these effects are serious enough to merit serious concerns. Conclusion We are against the legalization of Bovine Somatotrophin because it harms the cows more. The use of bST in cattle elevates the cow's stress levels, while also making it more prone to diseases and making antibodies injected in the cow virtually useless. So basically, the use of bST may benefit us humans because we can acheive a higher milk yield, but it is more harmful to the actual animal receiving this hormone.
While the effects on the actual animal are rather bad, we cannot deny this it could be good for the milk industry, as it increases milk yeild per cow which adds up to a lot more milk. It's just the fact that it harms the actual animal that leads us to be against the use of it, (: gbg
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