Effects of fish stocking density on growth and survival of Silver carp (Hypophthalmichthys molitrix) fry in Jashore, Bangladesh

The experiment was operated in 9 consecutive weeks in nine earthen nursery ponds having the same area (0.09 acre) and depth (0.8 m). Seven days old fries of Silver carp (Hypophthalmichthys molitrix) were stocked at 4000, 5000 and 6000 fries/decimal in three treatments with three replications as T-1, T-2 and T-3, respectively to observe the growth and survival. At stocking, hatchlings were the same batch-rearing with an average length and weight of 0.44 ± 0.05 cm and 0.14 ± 0.05 mg, respectively. Wet mustered oil cake and commercial nursery feed containing 30% crude protein were given by two weeks interval, initially according to the bodyweight; the feeding rate was 14% in the first two weeks, gradually reduced to 12, 10 and 8%, respectively in the following week intervals. Water quality parameters and plankton sufficiency were observed every 15 days interval and was found within the acceptable range. Growth performance (6.458 g), survival rate of fingerlings (85.76%) and total production (22151g/decimal) were found highest in T-1 followed by T-2 and T-3. The study concluded that expect better production of fry up to fingerlings, proper stocking density should be maintained in pond fish culture in Jashore region of Bangladesh.

Download Full-text

Growth performance of silver carp (Hypophthalmichthys molitrix) in cage stocked at different densities

Journal of the Bangladesh Agricultural University ◽

10.3329/jbau.v16i2.37989 ◽

2018 ◽

Vol 16 (2) ◽

pp. 322-327

Author(s):

Rumana Akhtar Jui ◽

Mohammad Mahfujul Haque ◽

SM Rahmatullah

Keyword(s):

Growth Performance ◽

Silver Carp ◽

Quality Parameters ◽

Individual Growth ◽

Phytoplankton Production ◽

Total Production ◽

Hypophthalmichthys Molitrix ◽

Highest Weight ◽

Significant Difference ◽

Cage Size

An experiment was conducted to evaluate the growth performance of silver carp (Hypophthalmichthys molitrix) in cage stocking at different densities. It was expected that silver carp could grow feeding on plankton without external feeding. In this experiment, silver carps in nine cages were stocked in three different stocking densities such as 20, 30 and 40 fishes/m3 designated as treatments T1, T2 and T3, which were located in the south west corner of the L-shaped pond in Field Laboratory Complex, Faculty of Fisheries, Bangladesh Agricultural University (BAU), Mymensingh consisting of three treatments with three replications of each for a period of 90 days from 18th August to 17th November, 2015. Each cage size was 1m x 1m x1m (length x width x height) and silver carp was cultured in the cage with natural feed which filtered phytoplankton mainly. Twenty five genera of phytoplankton were identified in pond and the average phytoplankton production was around 8.44x105cells/liter. Water quality parameters such as temperature, dissolved oxygen, pH and transparency were recorded fortnightly. At the completion of the experiment, weight showed significant difference (p>0.05) among three treatments although length didn’t vary significantly. The highest length gain (18.61+0.369 cm) and the highest weight gain (62.52+2.249 g) were found in T1. The highest SGR% for silver carp was found in T1 and the highest total production was obtained in T3 (5.00+ 0.015 kg/m3). Individual growth performance of silver carp was satisfactory. Further studies are needed with different stocking densities and duration to verify the result.J. Bangladesh Agril. Univ. 16(2): 322-327, August 2018

Download Full-text

Comparative Growth Performance of Oreochromis Hybrids and Selectively-Bred Strain (F8) in Malawi

Sustainable Agriculture Research ◽

10.5539/sar.v5n4p13 ◽

2016 ◽

Vol 5 (4) ◽

pp. 13 ◽

Cited By ~ 4

Author(s):

Daud Kassam ◽

Marcus Sangazi

Keyword(s):

Water Quality ◽

Growth Performance ◽

Crude Protein ◽

Experimental Period ◽

Quality Parameters ◽

Conversion Ratio ◽

Food Conversion ◽

Growth And Survival ◽

Maize Bran ◽

Better Than

Most fish farmers in Malawi culture unimproved fish strains whose growth is slow and mature while still small. Four strains of Oreochromis, namely; selectively-bred/improved O. shiranus (F8), two reciprocal F1 Oreochromis hybrids, and O. karongae as a control (mean weight 2.5 ± 0.7 g) were stocked at a density of 5fish/m2 in 9m2 hapas replicated three times, and cultured for 90 days at Bunda Fish Farm. Fish were fed twice a day with feed formulated using maize bran and soybean containing 30% crude protein throughout the experimental period. The final mean weights were significantly different (p<0.05) across the treatments whereby; hybrid O. shiranus (male) X O. karongae (female) was 12.09g, hybrid O. shiranus (female) X O. karongae (male) was 9.72g, improved O. shiranus (F8) registered 9.23g, and O. karongae was the least with 9.00g. Apparent food conversion ratio was also statistically different (p<0.05) across the treatments whereby; O. karongae was 3.63, hybrid O. shiranus (female) X O. karongae (male) was 3.25, improved O. shiranus (F8) was 3.16 and hybrid O. shiranus (male) X O. karongae (female) was lowest with 2.26. There were no significant differences on the water quality parameters across the treatments throughout the experimental period and were within the required ranges for growth and survival of tilapias fish species. The results suggest that Oreochromis hybrids may be suitable candidates for aquaculture in terms of production as they performed better than the improved O. shiranus and the control O. karongae.

Download Full-text

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

e-Journal BUDIDAYA PERAIRAN ◽

10.35800/bdp.7.2.2019.24148 ◽

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

Download Full-text

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

Indonesian Aquaculture Journal ◽

10.15578/iaj.13.2.2018.57-61 ◽

2018 ◽

Vol 13 (2) ◽

pp. 57 ◽

Cited By ~ 1

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%).

Download Full-text

Modern features of aquaculture of cyprinids in the republic of Iraq

Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries) ◽

10.33920/sel-12-2010-01 ◽

2020 ◽

pp. 6-14

Author(s):

Farhan Yasin Hamed ◽

Adelia Zakirovna Anokhina ◽

Natalia Viktorovna Sudakova ◽

Damelya Kazhigalievna Magzanova

Keyword(s):

Silver Carp ◽

Stocking Density ◽

Fish Farming ◽

Pond Water ◽

Government Support ◽

Bighead Carp ◽

Ctenopharyngodon Idella ◽

Natural Food ◽

Hypophthalmichthys Molitrix ◽

Fish Farms

It is shown that the leading role in the aquaculture of Iraq belongs to Cyprinids, which account for over 80 % of all fish farming production. The most widespread in the country are four main world species of carp aquaculture: common carp (Cyprinus carpio), grass carp (Ctenopharyngodon idella), silver carp (Hypophthalmichthys molitrix) and bighead carp (Aristichthys nobilis). Basically, the traditional technology of growing Cyprinids in ponds is used, which includes the main fish farming processes: care of broodstock to prepare them for spawning, collecting eggs and milt, eggs fertilization and incubation of embryos, raising juveniles and marketable fish. Currently, there are about 2 thousand private fish farms, which have ponds of various sizes from 4 to 100 hectares. Cultivation of Cyprinids in Iraq is carried out mainly by extensive methods: the use of the natural food base of reservoirs with low fish stocking density in polyculture. The fish productivity of ponds varies greatly in different fish farms from 1,5 to 6 t/ha, which is due to economic reasons. The data on changes in the temperature of pond water during the year and hydrochemical indicators are given, which shows favorable conditions for Cyprinids rearing. Information on the use of compound feeds for growing carp in ponds is provided, and data on the composition and nutritional value of the feed used. The fish culture indicators for the main biotechnical processes of the rearing of four Cyprinid species in Iraq are described in detail. In the conclusion, it is indicated that for the effective development of aquaculture in Iraq, government support is needed in the form of a developed long-term program and legislative acts.

Download Full-text

Efficacy and suitability of whole wheat flour on the growth and survival of Rohu (Labeo rohita)

Research in Agriculture Livestock and Fisheries ◽

10.3329/ralf.v6i2.43064 ◽

2019 ◽

Vol 6 (2) ◽

pp. 345-352

Author(s):

Shovon Sarker ◽

Md Fazle Rohani ◽

Md Shafiqur Rahman ◽

Md Sazzad Hossain

Keyword(s):

Weight Gain ◽

Survival Rate ◽

Growth Performance ◽

Wheat Flour ◽

Labeo Rohita ◽

Stocking Density ◽

Quality Parameters ◽

Whole Wheat Flour ◽

Growth And Survival ◽

Whole Wheat

The efficacy and suitability of dietary whole wheat flour supplementation was evaluated on the growth performance and survival of rohu (Labeo rohita). The study was conducted in 12 experimental aquaria at the Wet Laboratory, Department of Aquaculture, Bangladesh Agricultural University, Mymensingh. A total of 180 fingerlings of mean initial weight of 1.744±00 g were stocked at the same stocking density (268 fingerlings/m3). Four different treatments (T1, T2, T3 and T4) each with three replications were performed having different level of whole wheat flour such as 0% whole wheat flour (T1), 5% whole wheat flour (T2), 10% whole wheat flour (T3) and 15% whole wheat flour (T4). Feeds were supplied at 5% body weight twice daily in the morning at 9.00 am and in the afternoon at 5.00 pm throughout the study period. The rations were adjusted every week when new weights of the fish for various experimental aquariums were determined. At the end of the 63 days study period, the growth performance parameters such as mean final weight (g), weight gain (g), percent weight gain (%), specific growth rate (%/day) and the best feed utilization in terms of food conversion ratio were found highest at treatment 4 where fishes were fed with inclusion of 15% whole wheat flour and lowest was found at treatment 1 (fed with inclusion of 0% whole wheat flour). Water quality parameters were within the acceptable range and survival rate was found 100% in all treatment. Therefore, it can be concluded that treatment 4 (highest growth performance and survival rate of L. rohita with supplementation of 15% whole wheat flour containing diet) can be chosen by fish farmers for commercial culture of this species. Res. Agric., Livest. Fish.6(2): 345-352, August 2019

Download Full-text

Effect of Stocking Density on Growth Performance and the Survival of Golden Mahseer, Tor putitora (Hamilton) Fry

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2021/v14i530308 ◽

2021 ◽

pp. 47-54

Author(s):

Md. Golam Sajed Riar ◽

Nur- A Raushon ◽

Sumit Kumer Paul

Keyword(s):

Water Quality ◽

Growth Performance ◽

Crude Protein ◽

Stocking Density ◽

Experimental Period ◽

Quality Parameters ◽

The Other ◽

Water Quality Parameters ◽

Daily Weight Gain ◽

Tor Putitora

Growth performance and survival of Tor putitora fry under different stocking densities were evaluated fry rearing system. The experimental period was 10 weeks from 31 December to 10 March 2019. The experiment was carried out in nine earthen ponds of 0.04 ha each under three treatments with three replications. Thirty days old fry were stocked at the rate of 1.0X105/ha was designated as treatment- 1 (T1), 1.5X105/ha` as treatment- 2 (T2) and 2.0X105/ha as treatment- 3 (T3), respectively. Fry were fed with commercially available nursery feed containing 32% crude protein. It was observed that, lower stocking density showed highest daily weight gain in T1 (growth 0.066 ± 0.006 g/day) compared with higher stocking density in T2 (growth 0.044 ± 0.004 g/day) and T3 (growth 0.024 ± 0.003 g/day), respectively. It is also noticed that, the lower stocking showed the highest survival rate (79.66 ± 4.34 %) than the other two treatments (66.97±3.67 and 54.67± 3.12 %). The values of different water quality parameters were within the optimum ranges for the rearing of carp fry. Water quality parameters did not show significant variations in the experimental ponds under different stocking densities. Among these three stocking densities lower stocking density (T1) showed the best result compare with the other two higher stocking densities.

Download Full-text

Influence of stocking density on the culture potential of endangered riverine catfish Rita rita (Hamilton, 1822) in raceway

Indian Journal of Fisheries ◽

10.21077/ijf.2018.65.4.78430-07 ◽

2018 ◽

Vol 65 (4) ◽

Author(s):

Muhammad Forhad Alin ◽

MD.Rafiqul Islam Sarder ◽

Mohammad Matiur Rahman ◽

MD. Fazlul Awal Mollah

Keyword(s):

Crude Protein ◽

Growth Parameters ◽

Relative Weight ◽

Stocking Density ◽

Relative Length ◽

Quality Parameters ◽

Supplemental Feed ◽

The Mean ◽

Length Gain ◽

Suitable Environment

Endangered catfish Rita rita were reared in a cemented raceway to observe the culture potentiality at three different stocking densities (4, 8 and 16 juveniles/m 3) under the three treatments (T1, T2 and T3, respectively) with three replications each. The mean initial length and weight of Rita juveniles were 20.15±1.51 cm and 100.26±6.57 g, respectively. The fish were reared by providing clean poultry viscera (containing 48.56% crude protein) at 3% of biomass once a day. The water quality parameters were measured daily and found them within suitable ranges. The growth parameters such as final mean total length, relative length gain, mean body weight, relative weight gain, SGR and condition factor were significantly (p<0.5) higher in T1 compared to those of T2 and T3. The survival rate was 100% in all the treatments, and the fish production was significantly (p<0.5) higher in T3 (8.38±0.04 kg/m 3 and 8380.40±4.05 kg/ha) than those of T2 (4.49±0.03 kg/m 3 and 4493.00±3.22 kg/ha) and T1 (2.36±0.02 kg/m 3 and 2362.00±2.00 kg/ha). Though the growth performance of R. rita was significantly influenced by the lowest stocking density but the production findings suggest that this species can be reared at the minimum density of 16 juveniles/m 3 in cemented raceway with suitable environment and adequate supplemental feed.

Download Full-text

Effect of different rearing systems on the growth and survival of Gold fish (Carassius auratus)

Research in Agriculture Livestock and Fisheries ◽

10.3329/ralf.v2i2.25014 ◽

2015 ◽

Vol 2 (2) ◽

pp. 301-306

Author(s):

Rabeya Rahmatullah ◽

Md Ariful Islam ◽

Shah Mohammad Rahmatullah

Keyword(s):

Growth Rate ◽

Carassius Auratus ◽

Stocking Density ◽

Quality Parameters ◽

Water Volume ◽

Average Weight ◽

Growth And Survival ◽

Goldfish Carassius Auratus ◽

Gold Fish ◽

Average Weight Gain

The study was conducted to compare the effect of three different fry rearing systems such as: hapa, cistern and pond on the growth and survival of goldfish (Carassius auratus ) fry. A total of 645 fry (mean initial weight: 0.0071 mg) were randomly distributed in the three treatments (systems) each having three replications. The stocking density was same in all the treatments with respect to the water volume of the systems which was 10 fry/hapa, 125 fry/cistern and 80 fry/pond. The trial lasted for 40 days. The water quality parameters were favorable in all the treatments during the period of the study. The growth and survival of goldfish fry varied among the systems. Highest average weight gain and specific growth rate (SGR) were observed in pond followed by hapa and cistern. On the other hand, survival rate was highest in cistern followed by hapa and pond. It can be concluded from the study that the pond was the best system in terms of growth rate and cistern was the best system for survival of gold fish fry.Res. Agric., Livest. Fish.2(2): 301-306, August 2015

Download Full-text

GROWTH AND SURVIVAL OF TROPICAL ABALONE Haliotis asinina SEED IN CONCRETE TANKS AT DIFFERENTS STOCKING DENSITY

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v4i2.7781 ◽

2012 ◽

Vol 4 (2) ◽

Author(s):

Mat Sardi Hamzah ◽

Sigit Anggoro Putro Dwiono ◽

Safriyadi Hafid

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Shell Growth ◽

Economic Value ◽

Stocking Density ◽

Seed Density ◽

Total Production ◽

Growth And Survival ◽

Haliotis Asinina ◽

The World

Tropical abalones (Haliotis asinina) is a marine gastropod that has high economic value and consumed by people in the world. In 2002, the production of abalones was 4.076 ton from total production of marine fisheries in the world 8.000 ton. The countries that produce abalone by farming are Taiwan, Cina, South Africa, Japan, Cilie, USA, Australia and New Zealand. Information about the production in Indonesia is scarce. The main issue faced by farmer is higher mortality during post larvae and juvenile. The aim of this research was to observe the influence of abalone seed density in concrete tanks regarding to growth and survival. The research was conducted in January - May 2012 Mataram Marine Bio Industry Technical Implementation Unit, LIPI. Analysis of varians showed that seed densities was not significantly different (P>0.05). The highest survival rate were in density 75 individual/tank with 11.11 % mortality. The highest growth rate were in 50 individual/tank with shell growth rate 0.21cm/14 days and seed weight was 1.23 g.Keywords: growth, survival rate, seed of abalone (Haliotis asinina), density

Download Full-text