Effects of supplemental phytase on performance and tibia ash of broilers fed different cereals based diets

Abstract

A 21-day experiment with day-old broilers was conducted in order to assess the effect of phytase supplementation to different cereals-soybean meal based diets on broiler performance and tibia ash. Diets were formulated to contain 4 different cereals (maize, wheat, triticale and barley), 2 levels of dietary calcium (0.6 and 1.0%) and 3 levels of supplemental phytase (0, 500 and 1 000 PU/kg). Supplemented phytase had beneficial effects on broiler performance. It significantly increased body weight gain (P < 0.0003) and feed consumption (P < 0.0361) by 6 and 7% in comparison with the control groups, respectively. No influence on feed conversion ratio and tibia ash was detected. Both body weight gain and feed intake were also significantly influenced by different cereals (P < 0.0001 and 0.0348, respectively). The increasing dietary calcium level resulted in a significant increase in body weight gain (P < 0.0024) and tibia ash (P < 0.0016). Effects of 500 and 1 000 PU/kg were not statistically different between themselves.

The effects of phytase supplementation and dietary phosphorus level on performance and on tibia ash and phosphorus contents in broilers fed maize-soyabased diets

“…In the present study, supplemental phytase did not influence tibia ash, which is in accordance with the results of Perney et al (1993) and Pintar et al (2004), but in contrast with those of Sohail and Roland (1999) and Woyengo et al (2010) from maize-soyabean based diets.…”

Effects of supplemental phytase on the mineral content in tibia of broilers fed different cereal based diets

“…In the preceding papers we showed that: (i) magnitude of the beneficial effect of phytase supplementation on broiler performance varied between different cereals and calcium levels, (ii) supplemental phytase reduced the excretion of phytate phosphorus and increased its retention, magnitude of the effect depended on calcium dietary level, (iii) tibia ash content was not influenced by supplemental phytase (Pintar et al, 2004(Pintar et al, , 2005. In this paper effects on the mineral content in tibia are presented.…”

Effects of supplemental phytase on nutrient excretion and retention in broilers fed different cereal based diets

“…In the preceding paper we showed that the magnitude of beneficial effect of phytase supplementation on broiler performance varied between different cereals and calcium levels (Pintar et al, 2004). In this paper the effects on nitrogen, calcium, total and phytate phosphorus excretion and retention are presented.…”