an experiment was conducted to evaluate the effects of microbial phytase on apparent digestibility of crude protein (cp), amino acids (aa), and apparent retention of calcium (ca), total phosphorus (tp), iron (fe) and zinc (zn) in female broiler chickens diet. the experiment was designed as a completely randomized design. each treatment consisted of 4 replicates of 10 broilers in battery cages, ...

The excretion of large amounts of P in effluent from intensive pig and poultry units is indicative of the poor availability of phytate-bound P in plant-derived feed ingredients. This environmental problem prompted the development and acceptance of microbial phytase feed enzymes for single-stomached animals. Their introduction led to an increasing recognition that phytate may have adverse effect...

Phytase can improve the nutritional value of plant-based foods by enhancing protein digestibility and mineral availability through phytate digestion in the stomach and the food processing industry. Microbial sources are more promising for the production of phytases on a commercial scale. The objectives of this exploration were to screening and isolation of phytase-producing bacteria from hot sp...

A 4-week feeding trial with 120 day-old broiler (Hubbard) chicks was conducted to determine the efficacy of microbial phytase (Natuphos

Five barrows of approximately 45 kg BW, fitted with post-valvular T-cecum cannulas at the ileo-cecal junction, were assigned randomly to five treatments (5 x 5 Latin square design) to assess the effect of microbial phytase and feeding regimen (frequency and level) on the apparent digestibilities (total tract [ATTD] and ileal [AID]) and retention of nutrients. A corn-tapioca-soybean meal diet of...

A total of 1,200 Ross broiler chickens were used in 2 separate feeding studies to explore the effect of myo-inositol (MYO) and phytase on performance and blood biochemistry of broilers fed diets formulated to be either adequate or insufficient in Ca and digestible P (dP). Supplementation of diets that were formulated to be insufficient in Ca and dP with MYO resulted in improved BW gain and feed...

M. Çabuk, M. Bozkurt, F. Kırkpınar and H. Özkul Department of Poultry Science, Akhisar Vocational School of Celal Bayar University, 45210, Manisa-Turkey Poultry Research Institute, Erbeyli 09600, Aydın-Turkey Department of Animal Science, Agricultural Faculty of Ege University, Bornova 35100, Izmir-Turkey __________________________________________________________________________________________...

Two experiments involving 115 pigs were conducted to assess the efficacy of a microbial phytase (Allzyme Phytase; Alltech, Nicholasville, KY) produced by Aspergillus niger in low-P, corn-soybean meal-based diets. The phytase supplement contained 50 phytase units/g and 1.43% P. In Exp. 1, growing-finishing pigs were fed fortified corn-soybean meal diets formulated to be adequate (.50%) or inadeq...

The efficacy of a recombinantly derived microbial phytase (Natuphos 5000, BASF Corp.) was evaluated in sorghum-soybean meal-based diets of finishing swine. During the 50- to 80- and 80- to 118-kg BW intervals, diets contained .40 and .39% plant P, respectively; control diets fed during the two weight intervals were supplemented with .08 and .04% inorganic P from dicalcium phosphate. The all pla...

Phosphorus in most diets for breeding sows is digested for 20 to 40%, thus leading to a relatively high amount of P in the manure. To enhance the P digestibility in diets for both lactating and gestating sows, two separate experiments were carried out to study the efficacy of Optiphos TM phytase derived from E. coli and produced by the yeast Pichia pastoris. Thirty crossbred gestating sows and ...