, six vibrating feeders trays (80 × 34 cm) per pen were arranged linearly,three at each side ofthe pool
with commercial ration without housefly larvae. The productive performance of frogs was assessed by
weight gain, feed intake, feed conversion, specific growth rate and survival by 90 days. We observed that
bullfrog froglets receiving food in a vibrating feeder tray present better productive performance (weight
gain, feed conversion and specific growth rate) than animals fed ration and housefly larvae in a linear
feeder. This response can be related to the greater visual stimulus of the food by frogs fed in vibrating
feeder trays, in which food had greater movement.
, six vibrating feeders trays (80 × 34 cm) per pen were arranged linearly,three at each side ofthe poolwith commercial ration without housefly larvae. The productive performance of frogs was assessed byweight gain, feed intake, feed conversion, specific growth rate and survival by 90 days. We observed thatbullfrog froglets receiving food in a vibrating feeder tray present better productive performance (weightgain, feed conversion and specific growth rate) than animals fed ration and housefly larvae in a linearfeeder. This response can be related to the greater visual stimulus of the food by frogs fed in vibratingfeeder trays, in which food had greater movement.
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