Eco manure

2019-03-08 07:11:01

By Barry Fox Livestock feed that is rich in fat or oil is also rich in phytic acid—a form of phosphorus that animals find hard to digest and which is therefore excreted, polluting the soil. Now ExSeed Genetics at Iowa State University claims to be first to produce an animal feed that is high in protein and oil content, but low in phytic acid (WO 99/2668). The researchers repeatedly inbred maize corn and selected a strain with a third less phytic acid. Amino acids, such as lysine and methionine, are added to the feed, along with soya beans for protein. When the mixture is milled and fed to pigs,