Research Progress In Industrial Healthy Aquaculture Technologies Of Grouper

Grouper as the research object in this topic,in view of the seedling breeding,aquaculture technology,nutritional requirements,disease control.,generalization and summarization of predecessors' studies,combined with theoretical knowledge and practical experience,a targeted are discussed,in order to grouper aquaculture play a reference and guidance to professional and technical personnel and improve the efficiency and the technical level of grouper aquaculture.1.The grouper breeding,early embryonic development,larvae begun bait and environmental factors affecting the development of research results were summarized at home and abroad.found only exogenous androgen can induce the grouper sex reversal,and through fortified by only leads to the gonads mature;Different types of grouper have different sizes;During the period of reconversion,it is important to eat the exogenous nutrition for the normal growth and development of the fish.There are also differences in the environmental factors of the early development of different species of grouper and the development of young fish.2.At present,the grouper aquaculture is of extensive small cottage cultivation mode to intensive mode of factory farming,the article introduces the circulating water in the factory farming of grouper workshop equipment,water quality monitoring equipment,Internet and other emerging technologies and facilities to ensure appropriate growth environment,and has obtained the good application effect.3.In this paper,the grouper nutritional requirements research at home and abroad are reviewed,mainly in terms of protein and lipid and its substitutes,of carbohydrates,amino acids,vitamins and trace elements are less and less system research.In addition,the research on the nutrient requirements and their interrelationships of the large grouper should be further improved.4.In this paper,the study of seawater cultured grouper diseases were summarized,and research the clinical characteristic,season,popular area,symptoms,pathogen biology,repeated infection experiment,and pathological observation and experience,etc.In the case of pathogens,the study of viral diseases focuses on neuronecrosis virus and iridescent virus;The study of bacterial diseases is more,the representative bacterial disease is mainly vibrio.A few parasitic diseases have also been reported,mainly due to diseases such as protozoa,monozoa,arthropod,animal,animal,etc.5.At present,the main constraints on the development of grouper health care: the rising price of fish meal,the increase of the cost of raising the fish,and the need for the further study of the fish powder.In pursuit of the production of the unit area,the load of circulating water system is increased,and the disease is a major threat to the development of the industrial development.The regulation of fish and drug in the seedling production process is not in place,it is still the weak link of product quality safety and market regulation.