草鱼种对配合饵料中钙磷的需要量及适宜钙磷比  

The requirements and optimum ratio of calcium and phosphorus in the compound feed of Ctenopharyngodon idellus

作　　者：王志忠[1] 孙鹤田[1] 刘汉华[1] 马俊岭[1] 轩子群[1] 任维美[1] 吴亚恒[1] 

机构地区：[1]山东省淡水水产研究所饲料研究室,山东济南250117

出　　处：《水产学报》2002年第2期127-132,共6页Journal of Fisheries of China

基　　金：山东省科委资助项目 (89-3 6)

摘　　要：研究了草鱼种对饵料中钙磷的需要量及适宜钙磷比。试验结果以增重率和饵料转换率两项生物学指标为依据进行综合分析。结果表明 ,在本试验条件下草鱼对饵料中钙的需要量为 0 .4 73%～ 0 .788% ,磷的需要量为 1.4 19%～ 1.5 77% ,钙磷的总需要量在 2 .10 0 %～ 2 .70 0 %范围内 ,适宜钙磷比则随着钙磷含量的高低同异而变化 ,即在钙磷含量较低而总量不同时为 1∶3,钙磷含量高而总量相同时为 1∶2。当钙磷比中的磷小于 2时 ,钙磷总量高则可减轻因钙磷不平衡对草鱼生长所产生的抑制作用。钙磷比不等于 1∶2 (或 1∶3)时 ,钙磷总量过多或过少都不利于鱼的生长 。The requirements and optimum ratio of calcium to phosphorus in the compound feed of grass carp (Ctenopharyngodon idellus) were studied. Results were analysed based on the two biological indexes of weight gain, feed conversion ratio and feed efficiency. Results show the calcium requirement is 0.473%-0.788%, Phosphorus requirement is 1.419%-1.577%, total requirement is 2.1%-2.7%. The optimum ratio of calcium to phosphorus changed with the levels in feed. When calcium and phosphorus levels were lower, but total level was different, the optimum ratio of calcium to phosphorus is 1∶3. When calcium and phosphorus levels were higher, but total level was same, the optimum ratio of calcium to phosphorus is 1∶2. When the phosphorus value is below 2 in the ratio,higher total level of calcium and phosphorus can decrease the stress of grass carp because of imbalance of calcium and phosphorus. When the ratio of calcium to phosphorus is not 1∶2, or 1∶3, higher or lower total levels of calcium and phosphorus can affect the growth and feed conversion ratio of grass carp.

关 键 词：草鱼 配合饵料 钙磷比 增重率 鱼种 需要量 生物学指标 饵料转换率 

分 类 号：S963[农业科学—水产养殖] S959.468[农业科学—水产科学]