Effect of phytase on true total tract digestibility of phosphorus in full-fat rice bran determined in pigs by regression method

Authors : Walter LUCCA, Marcos Speroni CERON, Matheus Schardong LUCCA, Lucas Giovane CASAGRANDE, Leonardo Tombesi Da ROCHA, İrineo ZANELLA, Vladimir De OLIVEIRA

Pages : 490-495

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :  The goal of this study was to determine the effect of phytase on true total tract digestibility of phosphorus insert ignore into journalissuearticles values(TTDP); and endogenous losses of phosphorus insert ignore into journalissuearticles values(ELP); of full-fat rice bran insert ignore into journalissuearticles values(FFRB); by simple linear regression. Twelve castrated pigs in the growing phase with an average live weight of 57.00 ± 2.50 kg were used. The experiment lasted 36 days, divided into three periods of 12 days each. The experimental design consisted of randomized blocks in a 2 × 3 factorial scheme, with two levels of fungal phytase insert ignore into journalissuearticles values(0 and 750 FTU k g − 1 ` role=`presentation`> k g − 1 k g − 1 \mathbb{kg}^-1 ); and three levels of phosphorus insert ignore into journalissuearticles values(P); coming from FFRB insert ignore into journalissuearticles values(5%, 10%, and 20%);, totaling six treatments with six replicates. The P coming from FFRB recovered in feces was influenced by phytase insert ignore into journalissuearticles values(P < 0.008); and by the amount of ingested FFRB insert ignore into journalissuearticles values(P < 0.001);. The average value of ELP was 524 mg/kg dry matter intake insert ignore into journalissuearticles values(DMI);. The TTDP of FFRB was increased by 20 percentage points due to phytase addition. In conclusion, the ELP represented 524 mg/kg DMI on average. The addition of 750 FTU of phytase increased the TTDP of FFRB, which was 32.60% and 52.60% without and with phytase, respectively.
Keywords : Digestibility, fungal phytase, phosphorus endogenous losses, phytate, regression method