一、后备亲鱼选择标准 1.后备亲鱼最好从江、河、水库中捕捞,池塘培育出的也可,但务必注意避免近亲繁殖。一般来说,雌雄鱼从不同的水域中选留可避免近亲繁殖。 2.后备亲鱼要求体形正常,无病无伤,品种特征明显。不能选择过肥的“脂肪鱼”和过瘦的“刀背鱼”。 3.后备亲鱼的大小,在南方地区,一般是:草鱼2 First, the reserve broodstock selection criteria 1. Reserve broodstock is best fishing from rivers, reservoirs, ponds can also be cultivated, but care must be taken to avoid inbreeding. In general, males and females choose from different waters to avoid inbreeding. 2. Reserve broodstock require normal body shape, disease-free and non-injury, obvious breed characteristics. Can not choose too fat “fatty fish” and too thin “knife-back fish.” 3. Reserve broodstock size, in the south, is generally: grass carp 2