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Wyszukujesz frazę "recirculating aquaculture system" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Effect of difference filter media on Recirculating Aquaculture System (RAS) on tilapia (Oreochromis niloticus) production performance
Autorzy:
Tanjung, Ricky Rahmat Maliki
Zidni, Irfan
Iskandar, Iskandar
Junianto, Junianto
Powiązania:
https://bibliotekanauki.pl/articles/1075772.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Oreochromis niloticus
filter media
production
recirculating aquaculture system
tilapia
Opis:
This research aims to determine the composition of the best filter media on tilapia (Oreochromis niloticus) production performance. The method used in this research is experimental methods use Completely Randomized Design (CRD), which consist of four variables and three replications. The variable used is (A) without media filter (Control); (B) combination of cotton, bio ball and charcoal; (C) combination of cotton bioring and charcoal; (D) combination of cotton, Japanese matt and charcoal. The test fish used 180 tilapia fish with 7-9 cm length size. Tanks that used measured 60 cm x 30 cm x 36 cm as many as 12 pieces. The density during the research was 15 tails per tank. Duration of maintenance is 40 days. The feeding level is given by 5% of fish body weight. Water quality parameters (temperature, dissolved oxygen, pH, ammonia, and nitrate) were observed every 10 days for 40 days. Other parameters are survival rate, absolute length and weight growth, specific growth rate and feed convertion ratio observed every 7 days for 40 days. The results showed that the best composition of filter media for tilapia production performance was combination of cotton, bioball, and charcoal. Tilapia production performance obtained a combination of cotton filter media, bioball, and charcoal with 100% survival rate, length growth 2.17 cm, weight growth of 9.91 g, and specific growth rate of 2.3% and feed conversion ratio of 1.88.
Źródło:
World Scientific News; 2019, 118; 194-208
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The challenges of aquaculture in protecting the aquatic ecosystems in the context of climate changes
Autorzy:
Wróbel, Jacek
Gałczyńska, Małgorzata
Tański, Adam
Korzelecka-Orkisz, Agata
Formicki, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/27312664.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
aquaponics
freshwater ecosystem
seawater ecosystem
greenhouse gases
integrated multi-trophic aquaculture
mariculture
pond
recirculating aquaculture system
water temperature
Opis:
The paper discusses the current prognoses of aquaculture development worldwide putting an emphasis on its effect on the environment and the issue of the protection of water reservoirs in different countries. Water consumption in diversified aquaculture systems is presented herein as well as the characteristics of the mechanical and biological water treatment methods in fish farms, with particular attention paid to the recirculating water systems. New aquaculture technologies using post-production waters are presented. The paper provides a discussion on the contribution of aquaculture to the global greenhouse gas emissions and the means of limiting this emission. The effect of climate change on aquatic ecosystems is presented in the context of the changes of the aquaculture production profile. The paper includes a brief presentation of the methods of mitigating the changes with respect to contamination of aquatic ecosystems as well as climate change. Reducing the water footprint can be achieved through selective breeding, species diversification and implementation of more technologically advanced aquaculture systems such as: integrated multi-trophic aquaculture, aquaponics and recirculation systems in aquaculture. The need for certification of fish farms with water recirculation systems is justified in the paper. The issues addressed herein are summarised and the main areas for extending the research promoting preservation of aquatic ecosystems in aquaculture are presented.
Źródło:
Journal of Water and Land Development; 2023, 57; 231--241
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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