有关对虾配合饵料的几个问题

本文报道了有关对虾人工配合饵料的特点、配方、营养要素、加工工艺,以及投喂方法,可供对虾养殖生产单位加工饵料时参考。

PROBLEMS OF PREPARING COMPOUND DIET FOR PRAWN

Preparation of prawn diets, labelled 802, 831 and 843, has the same characteristics. (1) The main component is plant substance in which bran and oilcake dregs accounts for more than 70 %. (2) The cost is low, totalling 0.56-0.68 Yuan/kg including the process expense. (3) The particulates can be kept for 4 hrs in water. (4) It is suitable for all sizes of prawn, form seedlings to adults fed separately or with other nutrients. (5) The preparation process is simple. (6) The diet coefficient is low, generally 3.5, or 2.7 if culture condition is good. (7) The average body length may reach 12-14cm by using this formula. The mast essential component of this diet is the content of protein and its amino acid percentage. The crude protein in the diet should be around 40-50%. The percentage of essential amino acid should be proportional to that in the body of the prawn. The content of crude fat should be about 5% in consideration of fat acid required. Growth agent and induction agent were added to raise the survival rate and growth efficiency. The adhesion agents in the compound diet are mastly that of animal, plant, and chemical compounds. The animal adhesion agent is mainly that of small fishes. The plant adhesion agent is mainly that of starch paste.