Phytases are meso-inositol hexaphosphate phosphohydro-lases that catalyze the initiation of the stepwise phosphate splitting of phytic acid or phytate to lower inositol phosphate esters and inorganic phosphate (Fig. 1). These enzymes have emerged as effective tools to improve phosphorus nutrition and to protect the environment from phosphorus pollution in animal production. Although phosphorus is an essential nutrient to all species, 60 80% of phosphorus in feeds of plant origin is in the form of phytate (myo-inositol hexakisphosphate) that is poorly available to simple-stomached animals such as swine, poultry, and the preruminant calves, due to the lack of phytases in their gastrointestinal tracts. As a result, a large portion of feed phosphorus is not utilized by them and ends up in manure, causing environmental pollution. Meanwhile, expensive and nonrenewable inorganic phosphorus needs to be added to diets for these species to meet their nutrient requirements for phosphorus.

Weight Loss All Star

Weight Loss All Star

Are you looking to lose weight or even just tone up? What is stopping you from having the body you want and help you feel great at the same time? I created Weight Loss All-Star for all those wanting to lose weight, and keep the weight off. I know how hard it is to do diets and stick with them, and get the motivation to get up and exercise.

Get My Free Ebook

Post a comment