Performance and bone quality of broiler chicken fed a diet with reduced nonphytate phosphorus with bacterial phytases

Author(s):Show less -

dos Santos, Tatiane Souza ^[1] ; Denadai, Juliana Celia ^[1] ; Pereira Sartori, Maria Marcia ^[2] ; Pizauro Junior, Joao Martins ^[3] ; Aoyagi, Monica Megumi ^[1] ; Ramos Rezende, Juliana Cristina ^[1] ; Serpa, Paola Gentile ^[1] ; Muro, Everton Moreno ^[1] ; de Santana-Eich, Mayara Rodrigues ^[1] ; Mateus Pasquali, Guilherme Aguiar ^[1] ; Dornelas, Livia Carrasco ^[1] ; Ferreira Netto, Raimundo Goncalves ^[1] ; Zanetti, Leonardo Henrique ^[1] ; Pezzato, Antonio Celso ^[1] ; Sartori, Jose Roberto ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Sch Vet Med & Anim Sci, Dept Breeding & Anim Nutr, BR-18618681 Botucatu, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Sch Agr, Dept Crop Sci, BR-18610307 Botucatu, SP - Brazil

^[3] Sao Paulo State Univ UNESP, Sch Agr & Veterinarian Sci, Dept Technol, BR-14884900 Jaboticabal, SP - Brazil

• Document type: Journal article
• Source: CANADIAN JOURNAL OF ANIMAL SCIENCE; v. 99, n. 3, p. 607-619, SEP 2019.
• Web of Science Citations: 0

Abstract

This study evaluated the effect of three phytases in reduced nonphytate phosphorus (NPP) diets. In total, 2100 male Cobb 500 (R) chicks were distributed in a completely randomized design. Ten experimental diets were used: NPP1 reduction of 0.12% NPP plus phytase A, B, C, or without; NPP2 reduction of 0.22% NPP plus phytase A, B, C, or without; positive control diet, attending nutrient requirements; negative control diet, deficit of 0.10% NPP. The 2 x 4 + 2 (two levels NPP, three phytases or without, and two controls) design was used, and the means were compared by Tukey's or Dunnet's (p < 0.05) tests. There were significant interactions on day 21 for weight gain (p < 0.01), feed conversion ratio (p < 0.01), and day 35 for weight gain (p < 0.01), feed intake (p < 0.01), feed conversion ratio (p < 0.01), European production efficiency factor (p < 0.01), and it was shown that three phytases in NPP1 diet had the same result as positive control (PC) diet. NPP2 diets without phytase promoted high calcium (p < 0.01) and low phosphorus (p < 0.01) in plasma, and the significant interaction showed higher activity for alkaline phosphatase (p = 0.023). The significant interactions for resistance (p = 0.001) and ash (p < 0.01) of femur indicate that inclusion of phytases in diet NPP1 improved the availability of minerals, suggesting that this reduction plus phytase would be enough for better results. (AU)

• FAPESP's process: 14/27175-8 - EFFECT OF BACTERIAL PHYTASES ORIGIN ON PERFORMANCE AND BONE QUALITY BROILER
• Grantee: Tatiane Souza dos Santos
• Support Opportunities: Scholarships in Brazil - Master