Partição do P excretado nas fezes e urina de suínos em fase de crescimento, alimentados com dietas contendo diferentes níveis de enzima fitase

• Autor(a) principal: Moreira, José Aparecido
• Data de Publicação: 2013
• Outros Autores: Silva, Apauliana Daniela Lima Da, Mota, Lorena Cunha, Silva Filho, José Cleto Da, Vitti, Dorinha Miriam Silber Schmidt [UNIFESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNIFESP
• Texto Completo: http://dx.doi.org/10.1590/S1519-99402013000300013; http://repositorio.unifesp.br/handle/11600/7945
• topic: isotopic dilution tecnique; phytase enzyme; phosphorus; nutrition; fitase; fósforo; nutrição; técnica de diluição isotópica

This study had as purpose to evaluate the partition of P excreted in the faeces and urine of growing pigs fed with diets containing different levels of inclusion of phytase enzyme, through the use of radioisotope P-32.). Twenty pigs crossbred barrows were evaluated in a randomized block design experiment, with five treatments, 0; 250; 500; 750 and 1000PUkg diet, and four replicates. The animals were kept in metabolic cages for a 10-day adaptation period and seven days for total collection of feces and urine. Blood samples were taken for five days. On the first day of the collection period each animal was injected intravenously with 7.4MBq 32P phytase. The use of Phytase in diets for pigs provides reduction of P total and soluble excreted in the feces. On diets for growing pigs containing corn and soybean meal, you can reduce by 50% of the supplementation of the dicalcium phosphates, adding 500UF/kg diet, without causing damage to animal physiological system.