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AVOIDANCE OF ALGAE BLOOM, KEY FACTOR IN THE SUSTAINABLE DEVELOPMENT OF ECO-EFFECTIVE GROWTH TECHNIQUES OF CARP (Cyprinus carpio) WITH SILVER CARP( Hypophthalmichthys molitrix) AND BIGHEAD CARP (Hypophthalmichthys nobilis)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Nistor, Veta Savin, Christelle Tenciu, Magdalena Mocanu, Elena Jecu, Elena |
| Copyright Year | 2018 |
| Abstract | Water, nutrients, farmland and energy are the most important aspects of the ecological sustainability of aquaculture farms. With regard to water, both necessary quantity and quality are important . An important goal in all systems is to reduce the amount of water needed in order not to put additional pressure on the natural ecosystem. An equally important objective is to reduce wastewater and optimize discharges because in most cases aquaculture discharges contain many nutrients that could contaminate natural systems. Traditional carpiot fishponds only need water to replace the evaporated or infiltrated ponds; leakage is reduced until harvest. Under these conditions control of microscopic algae bloom is particularly important. Efficient use of the necessary nutrients is also essential for ecological sustainability. The first step is to reduce food losses through an advanced feed system and by selecting the right feed. Using polyculture technologies can increase the efficiency of nutrients due to various ecological niches of fish species. Thus, in the experiments necessary for the development of an ecoefficient fish species breeding technology, three experimental variants were applied, besides the conventional one, to the application of conventional technology, and the use of the growth in polyculture of the carp species, silver carp and big head carp. During the vegetative period of 2016 and 2017, the dynamics and structure of phytoplankton and zooplankton were monitored in the four experimental pools. The results showed that the phytoplankton structure was dominated by chlorophylls and diatoms, which did not pose problems in terms of the flowering phenomenon, with algal densities being small. In the semiintensive growth system practiced in ponds and small lakes, which has as a technological principle the intensification of production on the basis of stimulation of natural fish productivity and supplementary feeding, the carp benefits from the stimulation of the zoobenthos development, the silver carp as phytoplankton consumer, the big head carp from consuming zooplankton. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://rjas.ro/download/paper_version.paper_file.aa69d9db818acaa7.6e6973746f722e706466.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
