Effect Of Nutritional Supplements On The Growth And Reproduction Characteristics Of Temibrio Molitor

In order to increase larval quality of Tenebrio molitor Linnaeus, improve adult fecundity, as well as large-scale propagation, the current research provides atheoretical basis by exploring the effect of nutritional supplements on the Growth and Reproductive characteristics of T.molitor. In this thesis, the effect of different concentrations of added glucose, sucrose, honey, and other nutrients on the larval growth and development were studied systematically; the effect of glucose, sucrose, honey, royal jelly and other nutrients in different concentrations on the adult reproductive characteristics were investigated in different periods complement. Further larvae grown on different nutritional supplements were analyzed for their efficiency in garbage degradation such as corn stalk, food waste foam and others. The results are as follows:1. Effects of nutritional supplements on development of T.molitor larvaeThe effect of different concentrations of added glucose, sucrose, honey, and other nutrients on the larvae growth and development are investigated using multi-factor comparative feeding trials. The results showed that the effect of nutrients of different concentrations on the larval growth and development is significantly different. Compared with other experimental groups, the larvae supplemented with 10% sucrose group,glucose group and honey group had the similar characteristics, for example, weight236~247mg, body length 31~33mm, larval duration 83~88d, feed efficiency 27%~29%,moisture content of the larvae 58%~63%, crude protein contents in dry weight 59%~66%,pupation rate 95%~97%, emergence rate 92%~93%, and feathering neat, which was significantly superior to other concentrations groups(P<0.05). However, the cost of honey is higher than other nutrients, glucose and sucrose can be used in production.2. Effects of nutritional supplementation on adult reproductive characteristics duringdifferent periods of T.molitorThe effect of different concentrations of added glucose, sucrose, honey, and other nutrients on the adult longevity and fecundity were studied in different developmental stages. The results showed that fertility of adults which had been supplemented at both larval and adult stages had no significant difference as compared to adults which were not supplemented during the larval stage(P>0.05); adult nutrition group is greater than the larval nutrition group, which is significant superior(P<0.05). Nutrition supplements at different times of the same concentration T.molitor the difference was not significant for egg hatching(P>0.05); different concentrations of the same period of supplementary nutritional differences T.molitor egg hatching saw a significant increase(P<0.05).Fecundity of adult supplementary 10%glucose group was significantly higher than other groups(P<0.05), and the average life span of female and male adults was 136.72 d and138.54 d respectively, the best spawning period was10~55d after emergence, hatching rate was 94.29%.3. Effect of royal jelly on reproductive characteristics of T.molitorThe effect of different concentrations of added royal jelly on the adult longevity and fecundity were studied by single factor comparative feeding trials at the adult stage of T.molitor. Best feeding concentration of royal jelly was 2%, and the fecundity increased by 80.24%, the hatching rate increased by10%, adult longevity was extended 50 d,optimum spawning period was 10~60d after emergence, best supplementary period was1~60d after emergence. The adult reproductive characteristics were improved in egg laying speed, egg amount, and egg hatching rate.4. Larval degradation of differed wastes.The wastes is degraded by larvae of supplying nutrition to 40 d, such as corn stalks,food waste, foam. Using larvae of 10% glucose group to degradation corn straw, profit can increased by 40.21%, 10% sucrose group increased by 36.41%; Using larvae of 10%glucose group to degradation food waste, profit can increased by 78.38%, 10% sucrose group increased by 79.15%; Using larvae of 10% glucose group to degradation foam,profit can increased by 53.73%, 10% sucrose group increased by 50.00%. The degradation ratio of T.molitor with corn stalk is 1:6, with food waste is 1:5, and with foam is 1:7.