Vitamin C dietary supplementation influence tadpoles of bullfrog Lithobates catesbeianus reared in low water temperature

Vitamin C supplementation is important for the growth and development of bullfrog tadpoles under optimum water temperature conditions. Therefore, an experiment was carried out to evaluate effects vitamin on diet at a low temperature. A total 480 with mean weight 0.078 g were distributed in 12 aquariums each containing 40 L closed recirculation system. The experimental design entirely randomized four treatments (0, 150, 300, 600 mg kg-1 L-ascorbic acid monophosphate) three replicates. productive performance measured by gain, feed conversion, consumption, protein efficiency, carcass yield, hepatosomatic index, viscerosomatic visceral fat dry matter, ethereal extract. during period 21.74 ± 0.43 °C. did not influence yield index. However, there quadratic effect apparent Based these results, should be supplemented when subjected temperatures around 22