Michael BedfordMichael Bedford is a research director with AB Vista Feed Ingredients Ltd.From the AuthorHomeKey characteristics of high-dose phytasesKey characteristics of high-dose phytases ADDITIVES A fresh approach to phytase comparison is required when considering superdosing. By Dr. Mike Bedford Dr. Mike Bedford, global research director, AB Vista Andrea Gantz As the number of commercial phytase feed enzymes available on the marketEgg ProductionOptimising superdosing of phytase in poultryInterest in the benefits of phytase application beyond the simple release of phosphorus (P) from plant phytates is growing rapidly.Broilers & Turkeys¿Fitasa más allá de los requerimientos?Cuando apareció por primera vez la fitasa en el mercado, hubo escepticismo sobre si había un beneficio financiero, así como una serie de otros problemas. Sin embargo, en las últimas dos décadas hemos visto que han desaparecido muchas de esas preocupaciones y que hoy en día se incluye fitasa en casi todas las dietas avícolas. Es fascinante ver que se expande el uso de la fitasa más allá de sólo la liberación del fósforo para reducir el costo de la dieta. ¿Cuáles son los verdaderos beneficios?Poultry FeedPreventing phytase matrix problems in poultry nutritionPhytases entered commercial use in the early 1990s and are now widely included in monogastric diets. However, phosphorus (P) replacement values determined by controlled trials are not always replicated in the field, and feed manufacturers have become wary of recommendations, often reducing the P matrix value applied to the phytase.HomePotential extraordinary turkey performance through high phytase feed dosagesPhytases have traditionally been employed to reduce inorganic phosphate usage in monogastric rations, saving money and reducing phosphorus (P) pollution. However, two recent turkey trials show improved performance in response to higher phytase inclusions when phosphorus is not limiting, indicating this is linked more to phytate hydrolysis than phosphorus provision and suggesting commercial benefits from higher phytase doses.Broilers & TurkeysExploiting calcium-specific appetite in poultry nutritionSummary from the December 2011 World Poultry Science Association JournalHomeThe use of proteases in corn soy dietsThe use of proteases in corn soy dietsPrior to deciding on a protease, a number of factors need to be carefully examined. By Dr M R Bedford and Dr A J CowiesonInterest in the use of feed enzymes in cornPage 1 of 1