The Study On Eco-formulated Diet Of Centropristis Striata

For a long time, the farming methods of feeding trash fish in marine fish culture, aquaculture feed production capacity with a low, less feed diet or use a large number of the abuse of antibiotics, chemical hormones and synthetic drugs, such as illicit drugs, additives, resulting in waste of resources, farming, eutrophication, pollution, ecological environment, a serious phenomenon, and other aquatic products, aquaculture and fisheries industries pose a threat to food safety . For the existence of aquaculture development, the study of nutrients from the source of ecological farming - feed on the start to the new grouper - the Black seabass (Centropristis Striata) species targeted, such as the demand for green areas, the use of additives, and screening an eco-feed formula of the Black seabass in order to promote the health, ecology, green culture, and provide information of reference for other fish feed with ecological research and development.1. The use of eco-nutrition, the theory of the ideal model of the protein concept, the test of the Black seabass body, to understand the composition and nutritional content, in order to perceptual understanding and simulation the feed nutrients to provide the level of giving visual, and derived an ideal model of protein of Black seabass, for provide reference data of the preparation of eco-feed, balanced diet.2. According to the derivation of the ideal mode of protein preparation, formulate three protein levels of 41%, 46% and 51% and energy levels of 12.501 MJ/kg, 13.774 MJ/kg and 15.038 MJ/kg, protein levels of 40% of the bass feed control for 70-days feeding trial . The results showed that protein levels in 46%, Energy-protein ratio(EPR) in 29.92 MJ/kg, higher than the control group, the breeding efficiency . After analysis of the Black seabass appropriate level of protein in 43.9% - 47.31%, EPR 32.21 - 33.96 MJ/kg, can be an ideal breeding results .3. In accordance with the orthogonal design to the level of 46% protein, energy 13.629 MJ/kg the basis of diet add 500U / g, 750U / g and 1000U / g phytase, Small Peptide (SP) 0.2%, 0.3% and 0.4%, Chinese herbal medicine preparation 0.10%, 0.15% and 0.20% for the test group, not to add the feed as the basis for the control group, for 70 - days feeding trial . Test shows that the basic diet 500U / g phytase, 0.3% SP and 0.1% Chinese herbal medicine preparation, there are clearer of increase to the rate of weight gain, feed conversion ratio, survival rate of growth than the efficiency of the control group, and reaching ecological farming .