关键词: 青鱼鱼种, 维生素C, 添加量

Abstract: To determine the proper addition of different style VC, 600 fingerling black carp with an average weight 2.5 g, were fed purified diet without(control) or with coated ascorbic acid(CAA, 100, 200, 400, 600, 800 mg VC/kg diet), L-ascorbyl-2-polyphosphate(LAPP, 100, 200, 400, 600 mg VC/kg diet) for five weeks. Retarded growth, hyperemia and spinal deformities were observed when fingerling black carp were fed without supplemental VC. With the increase of supplemental VC in diets, growth rate and VC content of liver also increased, and kept constant until supplemental VC in diets were more than 400 mg/kg(CAA) or 200 mg/kg(LAPP). The results above show that the addition of VC in diets of fingerling black carp is 200 mg/kg(LAPP) or 400 mg/kg(CAA).

Key words: FINGERLING BLACK CARP, ASCORBIC ACID, ADDITION