Effects of enzyme and feeding system on turkey performance [efecto del uso de una enzima y sistema de alimentación sobre productividad en pavos]
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abstract
The aim of the present study was to evaluate an enzyme preparation with protease, amylase, cellulase, beta-galactosidase and pentosanase activity on productive and carcass performance of turkeys under a confined or semi-confined system. Eight hundred White Diamond turkeys (nine weeks old, 5084 g body weight) were randomly assigned to a 2 x 2 factorial arrangement: factor system (confined and semi-confined) and enzyme (0 and 0.1%25 as DM of total diet) four treatments, 5 replicas per treatment. Weight gain (WG), live weight (LW), feed intake (FI), forage intake (FGI), and carcass yield (CY) were recorded weekly for eight weeks. Turkeys under semiconfined system had higher final body weight, total gain, average daily gain, hot and cold carcass weight as well as less feed conversion than those under confined system. Hot and cold dressing was similar in turkeys under both systems. Enzyme increased final body weight, total gain, average daily gain, hot and cold carcass weight as well as reduced feed conversion ratio in turkeys under semi-confined system. Feed intake, hot and cold carcass dressing was not affected by enzymes. Enzyme preparation had a beneficial effect on growth and carcass performance of turkeys in a semi-confined system.
