Studies On The Stimulant The Commercial Diet Design Of Yellow Catfish

With the improvement of living condition in China, the supply of yellow catfish can't meet the market need. People like yellow catfish because of its delicious taste, high edible, no thorns, proterties and so on. The price of yellow catfish with the size of over 100g each fish is about 30 yuan/kg. There are many people begin to breed yellow catfish but few can reach large scale and the key factor is that yellow catfish is very difficult to supply forage to sprout and fish sufficiently, so it is impossible to supply enough sprout to meet market need. As a result, it is very important and urgent to develop a artificial forage. As yellow catfish has its own character and habit, the first step to solve the problem is how to make yellow catfish to eat artificial forage; Secondly design a reasonable artificial forage prescription; Then improve the prescription continually during the progress of production; At last solve the nutrition need of yellow catfish perfectly.The experiment firstly designed and improved the study methods on fish stimulant bait. Secondly developed a stimulate bait product of yellow catfish, Then solved the problem of how to make yellow fish to eat artificial forage. There are 3 steps in the trial:The first step was maze installation experiment. Four prescriptions were treatment group, the baac forage prescription was compare group. Each treatment groups has two gradients. Analyzed the numbers of fish (shrimp) gathering in applying compare group area and treatment group aiea in 10 minutes. These numbers tested by t-inspection. There are significant difference between treatment group and compare group, the results showed that the second gradient of prescription IV was ideal.Making use of gathering fish sifer(GFS) and the selected stimulant bait prescription, Dajiang fish forage, XinxiAwang fish forage to take the attractant experiment in river, the results showed the there were 17 fishes in GFS of applying stimulant bait, 10 fishes in GFS of applying Dajiang fish forage, 7 fishes in GFS of applying Xinxiwang fish forage. Multiply-compared these data by variance analysis and Duncan law, the activity of these three forage is: selected stimulant bait>Dajiang fish forage >Xinxiwang fish forage.By comparing experiment, the thesis designed a basic prescription as compare group and added stimulant bait in basic prescription as treatment group, then made the two groupprescriptions into pellets and used these pellets breeding yellow catfish. 48 days later, the average increased weight of treatment group was 455.7g, the forage coefficient was 1.94; the average increased weight of compare group was 348g, the forage coefficient was 2.23. By t-inspection, the difference of two groups is very significant. The result showed that the stimulant bait is not only easy for breeding but also easy to be absorbed by yellow catfish.The second item of the trials was to develop the practical prescription. On the basis of the analysis about the fish fed habits, the detection result of muscle nutrition composition, and the information which other scholars supplied, the paper designed three treatment prescriptions by using forage prescription design software and the compare group was fed with small prescription to fish. After 48 days feeding, the average increased weight of prescription I is 455.7g and the forage coefficient is 1.94; the average increased weight of prescription II is 272.8g and the forage coefficient is 2.49; the average increased weight of prescription III is 358.6g and the forage coefficient is 2.15; the average increased weight of compare prescription is 264.5g and the forage coefficient is 2.31. The data of average increased weight was multiply compared by multi-analysis and Duncan law and the result is: prescription I> prescription II > prescription IH>compare group. These forage coefficient was multiply compared by multi-analysis and Duncan law, the result is: prescription I> prescription II > prescription III>compare group. According to the above results, it showed that prescription I is good...