Recent advancements at the University of Guelph have developed a genetic breed of pig that makes better use of phosphorus. Scientists have isolated a naturally occuring phytase enzyme in a strain of Escherichia coli bacteria (naturally occuring in the intestine) that was able to survive the digestion process. Therefore providing the ability of the pig to break down the phosphorus prior to reaching the intestine. “Reachers then spliced the gene with a generic “direction trigger” from mice that would target the salivary glands.” “The transgene then was introduced into pig embryos. DNA and enzyme analysis confirmed that the pigs carried the gene and that their saliva contained the phytase.”