关键词: 结构优化, 结构优化

Abstract: In order to investigate the effect of nutrition formula on the growth of Rana spinosa tadpole, 4 forage formulae with different concentrations of proteins were used separately to breed 10-day-old tadpoles. And then, the body length, weight and metamorphism ratio of tadpoles were compared among the 4 treatments. The results showed that the formula B containing the highest concentration of animal-originated protein best fit for the growth of R. spinosa. The tadpoles in formula B treatment were with average body length of 70.65 mm and body weight of 3.10 g at 70-day-old, which were significant higher than the other three treatments (P<0.05). The average metamorphism ratio of formula B treatment was 95.50%, when the tadpoles were 85-day-old. Formula A (containing similar contents of animal-originated and plant-originated proteins) had less effect on metamorphosis of R. spinosa than formula B, with average metamorphism rate of 90.00% at 90-day-old tadpoles. However, the growths of R. spinosa tadpoles were obviously inhibited when feeding with formula C and D based on plant-originated proteins; none of metamorphosis was observed until tadpoles were old as 100 days. It might be concluded that the forage containing high-content animal-originated protein were beneficial for the growth and metamorphosis of R. spinosa tadpoles.