条件筛选
-
US uses genetic technology to accelerate pig growth
Professor Robert Schwartz and other researchers at Baylor College of Medicine in Houston, USA, have used genetic technology to increase pig growth speed by 40%, speeding up the time for pork to reach the market and reducing feeding costs. Recently, according to a report in the journal Nature Biology, the key to this technology is the use of a synthetic chemical substance that can make piglets' pituitary glands secrete more growth hormone than those of ordinary pigs. The researchers inserted this chemical substance into biodegradable DNA fragments, and then injected the DNA fragments containing this
-
Safe overwintering for bees: reduce disturbances to prevent accelerated colony aging
Disturbing the colony accelerates bee aging. How do bees overwinter safely in winter?