Effects of salinity, stocking density, and algal density on growth and survival of Iwagaki oyster Crassostrea nippona larvae

2018 ◽  
Vol 26 (4) ◽  
pp. 947-958 ◽  
Author(s):  
Tao Wang ◽  
Qi Li ◽  
Jingxiao Zhang ◽  
Ruihai Yu
Keyword(s):  
Stocking Density ◽  
Algal Density ◽  
Growth And Survival ◽  
Crassostrea Nippona

scholarly journals Budidaya ikan mas (Cyprinus carpio) sistem akuaponik dengan padat penebaran berbeda

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Darwis Darwis ◽  
Joppy D. Mudeng ◽  
Sammy N.J. Londong
Keyword(s):  
Water Quality ◽  
Cyprinus Carpio ◽  
Stocking Density ◽  
Quality Parameters ◽  
Water Volume ◽  
Daily Growth ◽  
Growth And Survival ◽  
Experimental Fish ◽  
The Difference

This research aimed to determine the stocking density that support the best growth and survival rate of carp cultivated in aquaponic systems, and to study the water quality of carp culture with different stocking densities in aquaponic systems. The study used 12 aquaria measuring 40x40x40 cm each (water volume of 50 liters). The experimental fish are carp (Cyprinus carpio) weighing in average of 3.5 g/individual.  The fish were cultivated with different stocking densities as treatment, including A = 4; B = 7; C = 10 and D = 13 individuals/aquarium.  The fish were fed with pellet at 5%/body weight/day with a feeding frequency of two times a day. The study was conducted for 4 weeks. Data consisting of daily growth, survival and water quality parameters (temperature, pH, dissolved oxygen, ammonia, nitrite and nitrate) were measured once a week. The data obtained were analyzed by ANOVA. The results of the study showed that the difference in stocking density had no significant effect on the growth and survival of carp.  Water quality was in a reasonable range to support the growth and survival of carp cultivated with aquaponic systems.Keywords: cultivation, carp, aquaponics, stocking density, growth

scholarly journals EFFECTS OF DIFFERENT pH SETTINGS ON GROWTH AND SURVIVAL OF COMMON CARP RAJADANU STRAIN

2018 ◽  
Vol 13 (2) ◽  
pp. 57 ◽  
Author(s):  
Vitas Atmadi Prakoso ◽  
Deni Radona
Keyword(s):  
Survival Rate ◽  
Common Carp ◽  
Culture Media ◽  
Stocking Density ◽  
Quality Parameters ◽  
Fish Length ◽  
Total Biomass ◽  
Growth And Survival ◽  
Fish Group ◽  
Ph Range

pH is one of the important water quality parameters in aquaculture. This study aimed to observe the growth performance and survival rate of common carp (Cyprinus carpio) Rajadanu strain reared in culture media with different pH levels. Fish (length: 3.60 ± 0.18 cm; weight: 1.68 ± 0.18 g) were stocked in nine aquariums (40 cm x 40 cm x 30 cm) for 10 days with a stocking density of 25 fish per aquarium. The treatments used were (A) pH 4-5, (B) pH 5-6, and (C) pH 6-7, with three replications. A commercial feed containing 28% protein was given daily and as much as 3% of the total biomass. The observed data were analyzed using variance analysis (ANOVA), followed by Duncan test. The results showed that the pH treatments did not affect the growth (length and weight) and survival rate of common carp Rajadanu strain (P>0.05). The best growth was achieved by the fish group reared in water with a pH range of 6-7 (length = 0.38 cm; weight = 0.17 g). The highest survival was attained by the fish group reared in water with a pH range of 5-6 (90.66%).

scholarly journals ANALISIS PERTUMBUHAN DAN TINGKAT KELANGSUNGAN HIDUP IKAN NILA (Oreochromis niloticus) DENGAN PEMBERIAN PAKAN PELET DARI SUMBER YANG BERBEDA

2021 ◽  
Vol 46 (1) ◽  
pp. 89
Author(s):  
Elrifadah - Elrifadah
Keyword(s):  
Survival Rate ◽  
Nile Tilapia ◽  
Stocking Density ◽  
Average Weight ◽  
Average Yield ◽  
Feed Conversion ◽  
Growth And Survival ◽  
Randomized Design ◽  
Level 3 ◽  
Pellet Feed

This study was aim to determine the different pellet feed source on the growth and survival rate of Nile tilapia. The purpose of this research was to provide information of the best feed for the growth and survival rate of Nile tilapia.Completely Randomized Design, with 3 treatments ( treatment A: community-made pellet, treatment B: commercial pellet PF500; treatment C: commercial pellet 885) and 3 replicate was used for the research. Nile tilapia with 3-4 cm length placed in nine aquariums with stocking density 6 fishes/L. Feeding treatment given twice a day at level 3 %/ body weight.  The parameters observed include growth rates, survival, and feed conversion. Supporting data was observed for water quality. Observation was carried out for 30 days.The results showed that the average weight, in treatment A was 101,66 g, treatment B was 118.33 g, and treatment C was 128.33 g. The average yield of relative growth in treatment A was 111.44%, treatment B was 134.23%, and treatment C was 135.76%. Treatment C shows the highest value, then treatment B and treatment A. The average yield of feed conversion, treatment A was 1.11; treatment B 3.21; and treatment C was 3.37. Survival rate of all treatments was 100%.

Sign in / Sign up

Export Citation Format

Share Document