Phytase-Supplemented Soybean Meal Diets
Two experiments were conducted to assess the effect of
phytase supplementation to a sorghum-soybean meal diet on the apparent
ileal digestibility of amino acids and performance of growing pigs.
Supplementing with 500 or 1,00 units of phytase activity (FTU/kg diet)
had no effect on the apparent ileal digestibility of amino acids. In
the second feeding study, pigs with an average weight of 22.9kg were
fed a basal sorghum-soybean meal diet containing 0.67% apparent digestible
lysine or the basal diet supplemented with 350, 700, or 1050FTU/kgdiet.
Phytase supplementation had no effect on average daily gain; feed, lysine
or threonine intake; or feed conversion. These results would indicate
that phytase supplementation does not affect the supply of digestible
amino acids or the performance of pigs fed a sorghum-soybean meal diet.
Cervantes, M, and co-workers. 2004. Ileal amino acid digestibility
and performance of pigs grain sorghum-based diets supplemented with
phytase. Interciencia 29(9): 527-531.
