Currently, the global economic crisis in
major importing countries, such as the United
States of America (USA), Japan and the European
Union (EU) has seriously affected shrimp prices
and caused declining consumption, whilst shrimp
production has increased tremendously from both
Asia and Latin America. In order to maintain
competitiveness in this business, most small-scale
shrimp farmers reduce the cost of production by
stopping the use of any chemicals for water
treatment to eliminate potential intermediate hosts
or carriers of most diseases prior to stocking PL
into the growout ponds. Thus, shrimp may be
prone to microsporidian infection, particularly in
areas where microsporidian outbreaks have
previously occurred. The objectives of this study
were to evaluate the prevalence of microsporidan
infection in the genus Thelohania (Agmasoma) and
its effects on the growth and histopathological
changes of pond-reared L. vannamei.
Currently, the global economic crisis inmajor importing countries, such as the UnitedStates of America (USA), Japan and the EuropeanUnion (EU) has seriously affected shrimp pricesand caused declining consumption, whilst shrimpproduction has increased tremendously from bothAsia and Latin America. In order to maintaincompetitiveness in this business, most small-scaleshrimp farmers reduce the cost of production bystopping the use of any chemicals for watertreatment to eliminate potential intermediate hostsor carriers of most diseases prior to stocking PLinto the growout ponds. Thus, shrimp may beprone to microsporidian infection, particularly inareas where microsporidian outbreaks havepreviously occurred. The objectives of this studywere to evaluate the prevalence of microsporidaninfection in the genus Thelohania (Agmasoma) andits effects on the growth and histopathologicalchanges of pond-reared L. vannamei.
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