The aim of this research was to study the effect of addition of natural extract of chestnut (Castanea sativa) Silvafeed ENC® (ENC® ) in commercial feed on the growth performance of broilers. Two hundred and four broiler chicks (Cobb 508) 14 d old male, were randomly assigned to 12 floor pens and fed commercial diet supplemented with 0% (CE0), 0.15% (CE15), 0.20% (CE20) and 0.25% (CE25) of ENC®. The results of ENC® addition showed a beneficial effect on weight increases, daily feed intake (DFI) and average daily gain (ADG) from 14 to 35 days of age. In the second half of trial the effects were less evident and concluding with a detrimental effect in CE25 group. Feed conversion rate (FCR) appears to be statistically different in the second and fifth weeks of feeding. The inclusion of ENC® at 0.20%, (CE20) had significant influences on final weight, DFI and ADG and a favourable influence on FCR in comparison with the other three groups. In conclusion, ENC® has been shown to be beneficial at concentrations between 0.15% and 0.20%.
Use of natural extract of chestnut (Silvafeed ENC®) in broiler feeding: effect on growth performance
SCHIAVONE, Achille;GUO, Kaijun;TASSONE, Sonia;GASCO, Laura;MALFATTO, Vanda Maria;ZOCCARATO, Ivo
2007-01-01
Abstract
The aim of this research was to study the effect of addition of natural extract of chestnut (Castanea sativa) Silvafeed ENC® (ENC® ) in commercial feed on the growth performance of broilers. Two hundred and four broiler chicks (Cobb 508) 14 d old male, were randomly assigned to 12 floor pens and fed commercial diet supplemented with 0% (CE0), 0.15% (CE15), 0.20% (CE20) and 0.25% (CE25) of ENC®. The results of ENC® addition showed a beneficial effect on weight increases, daily feed intake (DFI) and average daily gain (ADG) from 14 to 35 days of age. In the second half of trial the effects were less evident and concluding with a detrimental effect in CE25 group. Feed conversion rate (FCR) appears to be statistically different in the second and fifth weeks of feeding. The inclusion of ENC® at 0.20%, (CE20) had significant influences on final weight, DFI and ADG and a favourable influence on FCR in comparison with the other three groups. In conclusion, ENC® has been shown to be beneficial at concentrations between 0.15% and 0.20%.
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