Polyculture of the sea cucumber (Holothura scabra) with tiger shrimp for water quality improvement.

Author(s):  
Ngoc Thai

Abstract This case study describes research on the polyculture of the sandfish (Holothuria scabra) and tiger shrimp (Penaeus monodon) to improve pond water quality. At the first location in Khanh Hoa province, three 1,200-m2 ponds were stocked with shrimp postlarvae (PLs) at a density of 30 PLs m-2. Two ponds (S4 and S3) were stocked with sandfish, at 50 and 100 g m-2, while no sandfish was stocked in the control pond (S2). At the second location also in Khanh Hoa province, three 450-m2 ponds were constructed and stocked with shrimp PLs at a density of 30 PLs m-2. Two of these ponds (S5 and S6) were stocked with sandfish at 50 and 100 g m-2, while no sandfish was again stocked in the control pond (S7). A higher stocking density of sandfish generated a higher growth rate of shrimp (one -way ANOVA, p=0.15, n= 50). The growth rate of shrimp increased with sandfish stocking density, from 0.036 to 0.057 to 0.067 g per day at sandfish stocking densities of 0, 50 and 100 g m-2, respectively. Increasing sandfish stocking density also reduced the hydrogen sulphide (H2S) concentration (one-way ANOVA, p<0.05, n=89). Likewise, concentrations of nitrite (NO2-N), and total organic compounds were higher in systems not stocked with sandfish (one-way ANOVA, p<0.05, n=50). Fungal and bacterial densities decreased with increasing sandfish stocking density. This study thus showed that sandfish could remove certain quantities of toxic gases, organic compounds and microorganisms from shrimp culture systems.

1970 ◽  
Vol 6 (2) ◽  
pp. 341-348 ◽  
Author(s):  
ML Islam ◽  
MJ Alam

With the target of increasing the shrimp (Penaeus monodon) production through farm development and improved grow out management, an experiment was conducted with three different stocking densities viz. 5/m2 (T1), 7/m2 (T2) and 9/m2 (T3). Results of the experiment revealed that, among the water quality parameters, values of dissolved oxygen and transparency were lower in the higher stocking densities with significant difference (p<0.05) among the treatments. Other water quality parameters were similar in all the treatments. Bacterial load in bottom sediment had the trend to increase with increasing culture period and showed significant difference (p<0.05) among the treatments with the highest in the higher stocking density. Soil pH in the end sample reduced a little bit in all the treatments than the initial. Deposition of organic matter, phosphorus and nitrogen was related to the respective stocking densities. Final weight gain and survival rate of shrimp were significantly (p<0.05) higher in T1 than in T2 and T3. Stocking density of 5/m2 showed the highest production of 759.14±19.002 kg/ha, which was significantly (P<0.05) higher than that of 670.77±16.078 kg/ha obtained in T2, but similar to 701.24±33.507 kg/ha obtained in T3. The net economic return and BCR was also significantly higher (p<0.05) in the same stocking density (5/m2) compared to others. Whereas, FCR value was significantly lower (p<0.05) in T1 than the other two treatments. However, pond ecological conditions were more congenial for shrimp culture in lower stocking density (5/m2), which minimized the risk of disease outbreak in the respective stocking density, keeping the culture environment favorable. Key words: Stocking density; Tiger shrimp; Modified improved culture DOI: 10.3329/jbau.v6i2.4832 J. Bangladesh Agril. Univ. 6(2): 341-348, 2008


2009 ◽  
Vol 1 (2) ◽  
Author(s):  
Muhammad Iqbal Djawad ◽  
Nova Bertha

Study of the mangrove oyster (Crassostrea sp) to reduce heavy metal (Cu) concentration on shrimp pond water and the black tiger shrimp’s (Penaeus monodon) body was conducted during ten days. Variable used in this research was the efficiency level of mangrove oyster as a treatment in the Cu contaminated waters to reduce the level of the Cu concentration. Survival and specific growth rate of shrimp were also observed and measured. Histological condition of the fish especially gills was also observed to determine the level of dama ge caused by Cu. The results showed that oysters (Crassostrea sp) were a proper type of organisms used as bio-treatment in reducing Cu not only in the shrimp pond water but also in the body of the shrimp.Oysters we re able to reduce heavy metals Cu concent ration up to 78% level to the normal level of heavy metal Cu for black tiger shrimp. Keywords: Mangrove Oyster, Shrimp, Efficiency Level, Copper


2009 ◽  
Vol 1 (2) ◽  
Author(s):  
Muhammad Iqbal Djawad ◽  
Nova Bertha

<p>Study of the mangrove oyster (Crassostrea sp) to reduce heavy metal (Cu) concentration on shrimp pond water and the black tiger shrimp’s (Penaeus monodon) body was conducted during ten days. Variable used in this research was the efficiency level of mangrove oyster as a treatment in the Cu contaminated waters to reduce the level of the Cu concentration. Survival and specific growth rate of shrimp were also observed and measured. Histological condition of the fish especially gills was also observed to determine the level of dama ge caused by Cu. The results showed that oysters (Crassostrea sp) were a proper type of organisms used as bio-treatment in reducing Cu not only in the shrimp pond water but also in the body of the shrimp.Oysters we re able to reduce heavy metals Cu concent ration up to 78% level to the normal level of heavy metal Cu for black tiger shrimp.</p> <p>Keywords: Mangrove Oyster, Shrimp, Efficiency Level, Copper</p>


Author(s):  
Ayi Yustiati ◽  
Esa Jaya Dinata ◽  
Herman Hamdani ◽  
Ibnu Bangkit

This research was conducted to determine the optimal density of gorami (Osphronemus goramy Lac 1801) and nilem (Osteochilus hasselti C.V) polyculture with varios nilem density. The research are carried out in the maintenance pool of the Kawungsari Fish Farmers Group, Kertayasa Village, Pangandaran Regency, Indonesia. The research method used is an experimental method with 4 treatments and 4 replications using Completely Randomized Design (CRD). Variation of stocking densities carried out with the ratio of gorami: nilem is 30 : 0 fish m2 -1 (control), 30:10 fish m2 -1, 30: 20 fish m2 -1 and 30: 30 fish m2 -1. The fish are kept for 40 days in a pond with an area of 6 x 8 m and a height of 1.2 m. The fish used are gorami with 6-8 cm long and nilem with 4-6 cm long, gorami fish from the PangandaranKertayasa farmer group and nilem fish come from the seed hall which triggers gorami stock and nilem (BPPSIGN) Tasikmalaya. Obtained data are done at the beginning of the study and every 10 days, namely on day 10th, 20th, 30th and 40th. The parameters observed included daily growth rate, survival rate, feed efficiency, periphyton abundance and water quality. The results showed the stocking density of 30 fish m2 -1gorami with 20 fish m2 -1nilem was the most optimal stocking density with survival rate of 93.5%, daily growth rate of 1.19%, and gorami’s feed efficiency is 32.66%. Pond water quality including temperature, pH and dissolved oxygen is still within optimum range in accordance with the Indonesian National Standard for maintenance of gorami and nilem.


2016 ◽  
Vol 2 (1) ◽  
pp. 93
Author(s):  
Arifuddin Tompo ◽  
Endang Susianingsih ◽  
Mun Imah Madeali

Pencegahan dan penanggulangan penyakit pada budi daya udang windu dewasa ini dilakukan dengan cara merangsang kekebalan spesifik udang dengan menggunakan immunostimulan, namun optimalisasi penggunaannya masih perlu dilakukan. Oleh karena itu, penelitian ini dimaksudkan untuk mengoptimalisasikan penggunaan immunostimulan untuk dapat memberikan hasil yang efektif terhadap pencegahan penyakit pada budi daya udang windu. Immunostimulan yang digunakan dalam penelitian ini adalah hasil ekstraksi dari bakteri, Vibrio harveyii yang dilemahkan dengan formalin 1%. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan empat perlakuan: A= vaksinasi empat kali sebulan, B= vaksinasi dua kali sebulan, C= vaksinasi sekali sebulan, dan D= tanpa vaksin (kontrol) yang diulang sebanyak tiga kali. Aplikasi dolomit diberikan dua kali per minggu untuk semua perlakuan dengan dosis 5—10 mg/L untuk tiap kali penggunaan. Padat penebaran sebanyak 60.000 ekor/ha dengan pola tradisional plus. Hasil pengamatan memperlihatkan bahwa perlakuan B (vaksinasi dua kali sebulan) memberikan sintasan yang tertinggi yaitu 91,5% dengan produksi tertinggi yaitu 84,0 kg. Pengamatan terhadap populasi bakteri Vibrio sp. pada lingkungan berada pada kisaran 102—103 cfu/mL yang masih layak bagi lingkungan dan budi daya udang sedangkan untuk kualitas air pada beberapa parameter juga berada pada kisaran yang layak untuk budi daya udang.In recent years the prevention and control of diseases on tiger shrimp culture has been stimulated by specific immunostimulan such as vaccine. How ever the optimalization used of immunostimulan have to be conducted. Based on that information, the study aims to optimalized the using of immunostimulan to give the effective result on diseases prevention on tiger shrimp culture. The immunostimulan used in this research was extracted from vibrio by formalin killed 1% with four treatments i.e. A= four times of vaccination a month, B= two times of vaccination a monts, C= once of vaccination a month and, D= control (non vaccination). Dolomite application was given two times a week for all treatments with the dosage 5—10 mg/ L. The results shows that the treatment B (two times of vaccination a month) exhibit the survival rate i.e. 91.5% it is higher than A, C, and D treatments with highest production 84.0 kg. Observation on the population of Vibrio sp. value range 102—103 cfu/mL that’s normally condition both on environmental and shrimp culture, and water quality parameters was still in normal condition.


2021 ◽  
Vol 21 (2) ◽  
pp. 89-104
Author(s):  
Riska Puluhulawa ◽  
Tatag Budiardi ◽  
Iis Diatin ◽  
Irzal Effendi

Efforts to improve the production performance of clown loach in recirculate aquaculture system can be done by increasing stocking density and water discharge. This study aimed to analyze the effect of increasing stocking density and water discharge on production performance, stress response and water quality in order to obtain the best stocking density and water discharge to obtain maximum profit in a short time. A factorial completely randomized design with two factors, i.e. the stocking density of 1, 2, and 3 fish L-1 and the water discharge of 0,05; 0,10; 0,15 L s-1 was performed. The volume of water used in each aquarium was 48 L and using a ½ inch faucet stop to regulate the water discharge from the inlet pipe. Clown fish fed Tubifex sp. with a feeding frequency of two times a day according to the treatment for 60 days. The result indicates that there was no interaction between the two factors on production performance, payback period, and R/C ratio. Stocking density has a significant effect on specific growth rate, absolute growth rate of individual weight, feeding consumption rate and R/C ratio of clown loach. Stocking density and water discharge had an interaction on the visual color of pectoral and caudal fins of clown loach. Different stocking densities with the combination of water discharge in this study resulted that the water quality were within tolerable range for clown loach so that they did not experience stress, as well as high production and business performance. It is recommended to intensify clown loach with a stocking density of 3 fish L-1 and 0,15 L s-1‑ of water discharge.


2014 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
Andi Parenrengi ◽  
Bunga Rante Tampangallo ◽  
Andi Tenriulo

Vibriosis is one of main diseases of the black tiger shrimp Penaeus monodon infected by pathogenic bioluminous bacterium Vibrio harveyi that can cause mass mortalities in shrimp culture. The bacteria can also trigger the disease white spot syndrome virus (WSSV). An effort to produce shrimp disease-resistant strains has been done through transgenesis technology with antiviral gene transfection. By this technology, it is expected an increase in the immune response of shrimp in a variety of diseasecausing pathogens. This study aimed to determine the immune responses (total haemocytes, haemocyte differentiation, and phenoloxydase activity) of transgenic tiger shrimp against pathogenic bacterium V. harveyi. Research using completely randomized design, which consists of two treatments and three replications. Test animals being used were transgenic and non-transgenic shrimp with size, weight 3.93±1.25 g and a total length of 7.59±0.87 cm. Treatments being tested were the injection of bacterium V. harveyi (density of 5x106 cfu/mL) of 0.1 mL/individual on transgenic (A) and non-transgenic shrimp (B). Immune response parameters such as total haemocytes, haemocyte differentiation, and phenoloxydase activity were observed on day 1, 3, and 6 days after challenging. Data were analyzed using t-test by SPSS software. The results showed that the total haemocyte of transgenic shrimp was not significantly different (P>0.05) from non-transgenic shrimp, but haemocyte differentiation and phenoloxydase activity were significantly different (P<0.05) especially on sixth days after being exposed to the bioluminescent bacteria. The study results implied that transgenic shrimp has a better immune response compared than non-transgenic shrimp.


2016 ◽  
Vol 78 (4-2) ◽  
Author(s):  
Sri Hastuti ◽  
Subandiyono Subandiyono

The biofloc technology can control water quality under negligible water exchange. The aim of this study was to evaluate the  effects of stocking density on production and blood performance of catfish (Clarias gariepinus [Burchell, 1822]). The catfish were reared in biofloc system (heterotrophic bacteria and addition of sugar for a period of 10 wk and used three levels of density i.e. (500, 1 000, and 1 500) fish per m2. The production increased with the increasing of stocking density, relative growth rate decreased with the increasing of that. The stocking density of 1 500 fish per m2 on the biofloc technology can support maximum catfish production, health and proper water quality.


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