Publication Date:
2021-05-19
Description:
This paper provides an overview on the use of chemicals in seven countries in Asia (Bangladesh,
Cambodia, Nepal, Laos PDR, Pakistan, Sri Lanka and Viet Nam), with an emphasis on coastal
shrimp aquaculture and inland carp farming systems. The data come primarily from a recently
completed survey of aquaculture farms in Asian countries conducted under the ADB/NACA
Regional Study and Workshop on Aquaculture Sustainability and Environment. The issues discussed
include the types and uses of chemicals in shrimp and carp culture, farm management practices and
use of chemicals, hazards and adverse impacts associated with chemical use, alternative approaches
to chemical use, and research recommendations. In inland carp farming, apart from lime and
fertilizers, which are unlikely to give rise to any significant negative environmental impact, the
overall use of chemicals is extremely low. Piscicides are used in some countries to control predators
prior to stocking of ponds, but the use of antimicrobials and disease-control chemicals is limited to
a small percentage (〈5%) of producers. Most small-scale producers, who dominate aquaculture
production in these countries, simply do not have the resources or need for such chemicals. The
situation is similar in shrimp culture, with lime and fertilizers, followed by piscicides, being the
most common chemicals used. The use of antimicrobials increases with intensification in shrimp
culture, and these chemicals are mostly used in more intensive shrimp farming. In both shrimp
and carp culture, promotion of “primary” health management practices probably offers greatest
scope for prevention of aquatic animal disease outbreaks and the need for chemical use.
Description:
Published
Keywords:
carp, shrimp
;
ASFA_2015::A::Aquaculture
Repository Name:
AquaDocs
Type:
Book Section
,
Not Known
Format:
pp.75-86
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