Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/56488
Title: Phosphorus release capacity in different dietary commercial phytases through performance and bone characteristics assessment of broiler chickens
Keywords: Phosphorus
Poultry nutrition
Phytate
Phytase activity
Fósforo
Frangos de corte - Nutrição
Fitato
Atividade da fitase
Issue Date: Nov-2022
Publisher: Academia Brasileira de Ciências
Citation: BERTECHINI, A. G. et al. Phosphorus release capacity in different dietary commercial phytases through performance and bone characteristics assessment of broiler chickens. Anais da Academia Brasileira de Ciências, Rio de Janeiro, v. 94, n. 4, e20210286, 2022. DOI 10.1590/0001-3765202220210286.
Abstract: A trial was conducted to evaluate phosphorus release capacity in different commercial phytases throught performance and bone characteristics of broilers. A total of 2,400-day-old male Cobb 500® chicks were assigned in a completely randomized design with 12 dietary treatments ((1 to 5: with increasing levels of non-phytate phosphorus (NPP) (0.20; 0.25; 0.30; 0.35 and 0.40%) without phytase); and 6 to 12: with 0.20% supplemented with different commercial phytases), 8 replicates and 25 birds per pen. There was a linear increase (P<0.05) in the feed intake and body weight gain and a linear improvement (P<0.05) in the feed conversion ratio of broilers fed increasing NPP. The tested phytases did not release similar amounts of phytic phosphorus. Based on body weight gain response, 500 FTU/kg of diet releases a minimum and maximum of 0.074 to 0.152%, 0.062 to 0.157 and 0.059 to 0.169% of PP among the studied phytases in the periods from 1 to 21, 1 to 35 and 1 to 42 days, respectively. In conclusion, the commercial phytases released different concentrations of phytate phosphorus from the diets. Thus, is necessary to have a better method to evaluate phytase activity in order to avoid subnormal levels of available P in diets.
URI: http://repositorio.ufla.br/jspui/handle/1/56488
Appears in Collections:DZO - Artigos publicados em periódicos



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