Effect of stocking density on the growth, body composition, and blood parameters of cage-reared Gangetic mystus catfish (Mystus cavasius)
Md. Abu Sayed JewelJesmin AraMd. Ayenuddin HaqueMd. Yeamin HossainNoorashikin Md NoorSimon Kumar Das
8
Citation
51
Reference
10
Related Paper
Citation Trend
Abstract:
Suitable stocking density of Gulsa tengra (Mystus cavasius) was observed by measuring growth performance, production, and survival in nylon net cages for 120 days in Chalan Beel floodplain ecosystem. Fry of Gulsha tengra (5.55 ± 0.49 g in weight) were stocked into 6 × 3 × 2-m (36 m3) floating net cages with treatments: T1-50, T2-100, T3-150, and T4-200 fry/m3 (in triplicates). The stocked fry was fed twice daily with commercial floating pellet containing 32 % protein at the rate of 5 % /fish body weight during the first 2 months and then reduced to 3 % for the next 2 months. The highest weight gain was observed in the lowest density treatment, T1 (18.70 ± 1.37 g) and the lowest (8.66 ± 0.99 g) in highest density treatment, T4 (all tests for significance were performed at a 5 % level). The rate of survival varied from 86.6 % and 95.8 %, with T1 resulting in the significantly highest survival. A better feed conversion ratio was also observed in T1 (1.75 ± 0.26). Significantly higher protein (16.86 ± 0.36) and fat (2.78 ± 0.02) contents were recorded in the fish body composition in T1. Water quality parameters (temperature: 26.0 ± 1.0 °C, pH: 7.2 ± 0.2, DO: 6.4 ± 0.1 mg/l, NH3-N: 0.002 ± 0.001) recorded throughout the study period were within the suitable range for fish culture. The highest red (119.0 ± 4.85 ×106 µl) and white blood cell (233.2 ± 16.02 ×103 µl), hemoglobin (5.65 ± 0.30 g/dl), total protein (5.50 ± 0.03 g/dl), albumin (1.82 ± 0.06 g/dl), and globulin (3.65 ± 0.15 g/dl) were also observed in T1 indicating optimum condition. Total and net production per cage were the highest in T1 with approximately 50 % increase (88.31 ± 6.72 and 59.27 ± 5.79 kg, respectively) compared to T4. The net income and benefit–cost ratio was increased by approximately 42 % and 30 %, respectively, in T1. Thus, this study recommended an optimal stocking density of 50 fish/m3 for Gulsha tengra to achieve a profitable and robust yield in cage culture.Keywords:
Cage
Pangasius
Cite
Citations (28)
Juvenile Hemifusus tuba were net cage cultured at different stocking densities(10,20,30,40,50 shells/cage) to select optimum stocking density and then cultured in suspended net cages in Yunbo bay,Yangjiang city,Guangdong Province.The juvenile H.tuba reared under different stock densities for 60 days in natural conditions showed an exponential growth in shell height and body weight.The coefficients of variance(CVs) for the growth of the juvenile H.tuba in all the treatments except D1(10 juveniles/cage) were significantly reduced.The juvenile H.tuba grew significantly different among the all the treatments,but fastest in the treatments D2(20 juveniles/cage) and D3(30 juveniles/cage).The growth rate,specific growth rate(SGR) and daily weight growth(DWG) of the juvenile H.tuba decreased with the increase of the stocking densities.The SGR had a significant cubic polynomial regression with the stocking density(SGR=0.857 3+0.153 2D-0.005 1D2+0.000 05D3,R2=0.999 1).Juvenile H.tuba in the treatments D2 and D3 grew the fastest in all stocking densities,but the D3(30 juveniles/cage) was the optimum stocking density and selected for net cage culture when the rearing cost and management were considered.The juvenile H.tuba were cultured in suspended net cages at the stocking density of 30 juveniles/cage in Yunbo bay.After 100 days of suspended net cage culture of the juveniles,the shell height increased by 34.7%,and body weight by 157.4%.The DWG and daily height growth(DHG) were 0.18 mm·d and 0.173 g·d,respectively.The survival rate was 98%.The suspended net cage culture is found fit for culture of juvenile H.tuba.
Cage
Cite
Citations (0)
Catfish is a fish that is well known in the community and has high nutritional value. Plaju Darat Village, Plaju District is a city in Palembang where many people raise catfish. Catfish are generally processed into catfish pecel or catfish mangut. The implementation of this service activity aims to increase the potential of catfish and diversify processed catfish. The service method is carried out by counseling and accompanied by the practice of making catfish nuggets. The results obtained from this service increase the knowledge and skills of processing catfish into catfish nuggets. It is hoped that the catfish farming community in Plaju Darat Village, Plaju District, can implement their knowledge and skills to increase the added value of catfish into catfish nuggets and increase family income.
Cite
Citations (1)
Cage stocking density for laying hens has been one of the animal welfare issues that face the egg industry. This study investigated the effects of cage stocking density of 54, 60, 66, or 72 in2 per hen on the feeding behavior of grouphoused laying hens. The results revealed no significant difference in daily feeding behaviors of the hens subjected to the stocking density at thermoneutral conditions.
Cage
Laying
Cite
Citations (5)
Culture of channel catfish, "Ictalurus punctatus," accounts for virtually all catfish production. Recently, however, an increasing number of catfish farmers are growing or are considering the culture of blue catfish, "I. furcatus." Current and past research the compared the culture traits of channel and blue catfish are reviewed. Blue catfish could be potentially advantageous for certain farm environments. Strain effects in both species are important. In general, channel catfish grow faster to market size than do blue catfish. However, some strains of blue catfish grow faster than many strains of channel catfish. Blue catfish are more vulnerable to parasites such as "Icthyophthirius" and to bacterial infections such as those from "Flexibacter columnaris when compared to channel catfish. Blue catfish do not tolerate handling as well as channel catfish, and handling stress often leads to infections in blue catfish. However, blue catfish have high resistance to enteric septicemia of catfish caused by "Edwardsiella ictaluri" and to channel catfish virus when compared to channel catfish. Blue catfish are twice as vulnerable to harvest by seining than channel catfish, and have a higher dress-out percentage than most strains of channel carfish. Channel catfish tolerate lower dissolved oxygen levels than do blue catfish. Blue catfish require one more year to reach sexual maturity than do channel catfish.
Edwardsiella ictaluri
Cite
Citations (43)
This research was conducted from May until Juny 2013 at LaboratoryAquaculture of Technology University of Riau. The purpose of this research wasto investigate growth of the African catfish with high stocking density in bioflocktechniques. This research using exsperimental method and Completely RandomDesign (RAL) with three treatments and three replications, there are P1: stockingdensity of African catfish 100 fish/m2, P2: stocking density of African catfish 200fish/m2, dan P3: stocking density of African catfish 300 fish/m2. The result showedthat African catfish with high density in bioflock techniques was not effectedsignificantly on absolute growth weight, absolute growth length, daily growth rateand survival rate. But the best treatments in this research was stocking density offish 200 fish/m2, with high growth weight rate 17,25 g, lenght growth rate 7,84cm, daily growth rate 6,65%, and survival rate 94,66%. Keyword : African catfish, High density, Bioflock technology
Clarias gariepinus
Cite
Citations (0)
ABSTRACT Cage culture of catfish was tested in heated waters that were discharged from steam‐electric generating stations. Preliminary results indicated that catfish could be successfully cultured. In one cage a net increase in weight of 400% was obtained in 62 days.
Cage
Cite
Citations (5)
The high consumer demand in Indonesia encourages catfish farmers to conduct an intensive culture. A low feed efficiency mainly occurs in cultivating Sangkuriang catfish resulting in poor growth. This condition might be caused by low lysine content, as lysine is an essential amino acid that the fish cannot synthesize. The present study aimed to investigate the effect of lysine supplementation in feed on protein digestibility, feed efficiency, and growth of Sangkuriang catfish (Clarias gariepinus var. Sangkuriang) fingerlings. The study used 270 Sangkuriang catfish with an average wet weight of 7.54 ± 0.13 g/fish. The experimental feed contained protein, energy, and amino acid, and then various doses of lysine were added to the experimental feed: (1) 0.0%, (2) 0.5%, (3) 1.0%, (4) 1.5%, (5) 2.0%, and (6) 2.5%. Weight gain (WG), protein digestibility (ADCp), the efficiency of feed utilization (EFU), relative growth rate (RGR), feed conversion ratio (FCR), protein efficiency ratio (PER), and protein retention (PR) of catfish were evaluated for 8 weeks. The results found that the supplementation of lysine in feed significantly (P < 0.05) influenced WG, ADCp, EFU, RGR, FCR, PER, and PR of Sangkuriang catfish fingerling. However, there was no significant effect (P > 0.05) on the SR of Sangkuriang catfish fingerling. The supplementation of 1% lysine/kg feed was the optimal dose to improve the feed efficiency and growth of Sangkuriang catfish fingerlings by 83.79% and 3.94%/day, respectively. Therefore, the supplementation of lysine could increase Sangkuriang catfish production.
Clarias gariepinus
Cite
Citations (1)
From 1974 to 1993, nearly 2 million catfish Ictalurus spp. (primarily channel catfish I. punctatus), weighing about 500,000 lb, were stocked into 18 public fishing lakes throughout Alabama where natural recruitment to the fishery was nil. Using stocking and angler catch and effort records for these lakes, we examined factors related to catfish harvest, identified the most and least successful catfish fisheries, and attempted to determine optimal stocking size and cost-benefit ratio. About 1 million catfish, weighing 1.5 million pounds, were harvested; this conferred a minimum exploitation rate of 52% and a net return of 300% by weight. Harvest rates were highly variable and ranged from 0.4 to 311 fish/acre and from 1 to 320 lb/acre. In multiple regressions for all lakes and years pooled, biomass and number of catfish stocked and angler effort explained the most variation in catfish harvest rates. These models explained 68% of the variation in number of catfish harvested and 56%o of the weight harvested. Residuals from these models were useful in identifying successful and unsuccessful catfish fisheries. Stocking channel catfish larger than 10 in or 0.28 lb was associated with greater angler harvest. Cost-benefit ratios for value of harvested catfish to anglers was 1:1.45 for 6-in catfish and 1:2.13 for 12-in catfish. Numerically, harvest increased linearly with stocking density, which suggested that an optimal stocking density did not exist for the range of stocking densities examined. Our analytical procedure provides a tool for managers to assess factors related to the quality of catfish fisheries.
Cite
Citations (29)
Abstract. A first attempt to rear Cichlasoma synspillum Hubbs in floating cages was carried out. Fish with a mean individual weight of 18.5g were stocked at 25,50 and 100 per m3. The fish were fed a 40% protein balanced diet over a 112-day test-period. Growth differences of the fish were statistically significant (P<0.05), with the best results given by the lowest density. FCR ranged from 3.14 to 3.44, with the poorest efficiency found in treatment 3 (100/m3).
Cage
Cite
Citations (0)