<b>Performance and metabolic parameters of the bullfrog, Rana catesbeiana, fed with different commercial rations</b> - DOI: 10.4025/actascianimsci.v27i3.1214

Abstract

This work evaluated the performance of the bullfrog, fed with four commercial rations (R1 = 42.36% and 4,143 Kcal/Kg; R2 = 41.36% and 4,467 Kcal/kg; R3 = 45.5% and 4,481 Kcal/Kg and R4 =42.24% and 4,222 Kcal/Kg respectively of analyzed crude protein and calculated crude energy). Six hundred bullfrogs with initial medium weight, varying from 12.6 to 28.0 g were used for evaluation of development, blood glucose, liver lipid, liver somatic index (LSI) and fatty somatic index (FSI), in five monthly samples. The worst growth was observed in frogs fed with R4, presenting smaller weight gain and food consumption. Probably that result was due to the smallest ration consumption observed in this treatment and also quality of the used protein. No significant differences were observed among the rations for the food conversion, liver lipid and LSI. In addition, a larger FSI was observed in frogs that received R2, with a tendency of increase of this index along the time, in all treatments