速大肥在凡纳滨对虾饲料中的应用

Effect of feed additive Stafac-500 on the growth and feed conversion for juvenile white shrimp, Litopenaeus vannamei

摘要: 配制5种饲料，速大肥(Stafac-500)的添加量分别为0，20，40，60和80 mg · kg^-1，于室内水泥池(0.90 m×0.60 m×1.0 m)分组进行实验，每池养凡纳滨对虾60尾，初始体重为0.22 g，每组饲料3个平行，养殖时间8周。增重率(%)分别为1 105±43，1 115±33，1 150±22，1 192±53和1 272±33；饲料系数分别为1.56±0.11，1.51±0.02，1.45±0.01，1.42±0.10和1.49±0.02。结果表明，投喂添加速大肥添加剂饲料的对虾生长性能优于对照组，对虾摄入不同剂量的速大肥对全虾的营养组成没有显著性差异。

Abstract: five diets added feed additive Stafac-500(Stafac^®)0, 20, 40, 60 or 80 mg · kg^-1 diet were conducted to determine the weight gain (WG, %), survival, feed conversion ratio (FCR) for Litopenaeus vannamei juvenile (weight 0.22 g) at indoor concrete pools(0.90 m×0.60 m×1.0 m)for 8 weeks. Groupers of 60 animals were used in each pool, in triplicate. WG of the shrimp fed five diets contained feed additive Stafac-500 were 1 105±43, 1 115±33, 1 150±22, 1192±53 and 1 272±33, respectively; and FCR were 1.56±0.11, 1.51±0.02, 1.45±0.01, 1.42±0.10 and 1.49±0.02, respectively. The result showed that shrimp fed trial diets contained feed additive Stafac-500 40, 60 and 80 mg · kg^-1 diet superior to the control. However, dietary Stafac-500 (Stafac^®)did not affect the whole-body composition among shrimp fed with the various diets.