The effects of enzyme Rovabio™ Excel on the metabolizable energy and performance of broiler chicks fed wheat and barley–based diets
2008
Afshar, Majid | Lotf Ol-Lahiyan, Hushang | Shiri, Namdar Eskandar | Nafisi, Mehr Dad
This experiment was conducted to determine the effects of multi enzyme Rovabio™ Excel (R.E.) on the metabolizable energy and performance of broiler chicks fed wheat and barley based diets. The trial was carried out in a completely randomized design using 5 rations, in 6 replicates that each replication was included 25 chicks. The experimental diets were including: 1) Corn-based diet (Positive Control), 2) The diet containing 50% wheat, 3) diet no. 2 + R.E. enzyme. ,4) The diet containing 40% barley and 5) diet no.4 + R.E. enzyme. The experimental diets were isocaloric and isonitrogenous in each period. The results showed that the AMEn was higher in wheat and barley based diets supplemented with enzyme (R.E.) than the diets without enzyme. The results of this experiment indicated that feed intake, body weight gain, feed conversion ratio and production efficiency factor were significant difference between treatments (P 0.05). Feed intake was the highest in corn based diet (5221.47 g) and the lowest in wheat based diet (4279.26 g). Body weight gain was the highest and lowest in chicks fed with corn and wheat-based diets (2423.78 and 1611.44), respectively (P 0.05). Body weight gain was increased (P 0.05) by addition of enzyme to wheat and barley based diets. Feed conversion ratio was significantly (P 0.05) lower in wheat and barley-based diets supplemented with enzyme than wheat and barley-based diets without enzyme (2.38 and 2.12 vs. 2.66 and 2.29, respectively). Production efficiency factor was the highest in chicks fed with positive control and barley- based diet with enzyme (241.48 and 232.75) and the lowest in wheat based diet (133.06) and addition of enzyme improved of production efficiency factor (165.24). The results of this study indicated that Rovabio™ Excel improved the performance of broiler chicks fed wheat and barley based diets.
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