Growth performance of thai pangus (&lt;i&gt;Pangasius hypophthalmus&lt;/i&gt;) in polyculture system using different supplementary feeds

Sayeed, Md. Ashkar Bin; Hossain, G. S.; Mistry, S. K.; Huq, Khandaker Anisul

doi:10.3329/ujzru.v27i0.1956

Cited by 24 publications

(19 citation statements)

References 2 publications

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“…The percentage of survival as recorded in the present study was 100, 98 and 95% for T 1 , T 2 and T 3 respectively these results are similar with the findings of (Maniruzzaman 2001, Sayeed et al 2008, Cremer et al 2002. Survival was found to be negatively influenced by stocking densities.…”

Section: Discussionsupporting

confidence: 82%

Effect of stocking densities on growth, production and survival rate of red tilapia in hapa at fish hatchery Chilya Thatta, Sindh, Pakistan

Daudpota¹,

Kalhoro²,

Shah³

et al. 2014

J. Fish.

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Effect of stocking density on growth, production and survival of red tilapia (Oreochromis mossambicus × O. niloticus) were conducted in hapa for 60 days at Chilya Thatta. Tilapia fry (4.5±0.02 cm, 2.0±0.01 g) were stocked into hapa (4.5x2.4x1 m). Three treatments with two replicates were used: T 1 -200; T 2 -250 and T 3 -300 fry/hapa. Fry were fed twice a daily with pelleted feed containing 35% protein, 5% of total biomass. After 60 days, the highest growth were determined in T 1 (49.8±0.0 g) while in T 3 lowest growth (29.09±0.0 g) was recorded. Production (9.56, 10.13 and 8.12 kg/m 3 /60days) in T 1 , T 2 and T 3 respectively were significantly different (P<0.05) to each other. Feed conversion ratio of 0.48, 0.48 and 0.49 in T 1 , T 2 and T 3 , respectively not significantly different (P>0.05). Survival was significantly different among treatments (P<0.01). Highest survival (100%) was attained in T 1 with lower stocking density, followed by T 2 (98%) and T 3 (95%). Water quality parameters recorded throughout the study period were found within the ranges for fish culture such as temperature 27.2 to 28.5 °C, dissolved oxygen 5.8 to 6.4 mg/l, pH 6.9 to 7.6, ammonia from 0.45 to 0.51 mg/l, hardness 106 to 110 ppm and nitrite 0.151 to 0.162 mg/l.

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Section: Discussionsupporting

confidence: 82%

Effect of stocking densities on growth, production and survival rate of red tilapia in hapa at fish hatchery Chilya Thatta, Sindh, Pakistan

Daudpota¹,

Kalhoro²,

Shah³

et al. 2014

J. Fish.

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“…Fish SGR was influenced by the feed composition, and values ranging from 0.93% to 2.28% have been previously reported [33][34][35][36]. Feed conversion ratios (FCR) ranged from 1.48 to 1.71, with lower values in the systems with red chicory.…”

Section: Fish Productionmentioning

confidence: 73%

“…Feed conversion ratios (FCR) ranged from 1.48 to 1.71, with lower values in the systems with red chicory. Literature data showed FCR values ranging from 1.49% to 3.80% [33][34][35][36]. The better fish performance in the systems with red chicory was probably due to the better water quality, in terms of NH 4 + and NO 2 − levels.…”

Section: Fish Productionmentioning

confidence: 94%

Vegetable Intercropping in a Small-Scale Aquaponic System

et al. 2017

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This paper reports the results of the first study of an aquaponic system for Pangasianodon hypophthalmus production that uses Lactuca sativa L. (lettuce) and Cichorium intybus L. rubifolium group (red chicory) intercropping in the hydroponic section. The experiment was conducted in a greenhouse at the Zurich University of Applied Sciences, Wädenswil, Switzerland, using nine small-scale aquaponic systems (each approximately 400 L), with the nutrient film technique (NFT). The intercropping of vegetables did not influence the water temperature, pH, electric conductivity (EC), oxidation-reduction potential, nor O 2 content. Intercropping with red chicory increased the lettuce sugar content (+16.0% and +25.3% for glucose and fructose, respectively) and reduced the lettuce caffeic acid content (−16.8%). In regards to bitter taste compounds (sesquiterpene lactones), intercropping reduced the concentrations of dihydro-lactucopicrin + lactucopicrin (−42.0%) in lettuce, and dihydro-lactucopicrin + lactucopicrin (−22.0%) and 8-deoxy-lactucin + dihydro-lactucopicrin oxalate (−18.7%) in red chicory, whereas dihydro-lactucin content increased (+40.6%) in red chicory in regards to monoculture. A significantly higher organic nitrogen content was found in the lettuce (3.9%) than in the red chicory biomass (3.4%), following the intercropping treatment. Anion and cation contents in vegetables were affected by species (Cl − , NO 3 − , PO 4 3− , SO 4 2− , and Ca 2+ ), intercropping (K + and Mg 2+ ), and species × intercropping interactions (NO 2 − and NH 4 + ). Experimental treatments (monoculture vs intercropping and distance from NFT inlet) did not exert significant effects on leaf SPAD (index of relative chlorophyll content) values, whereas the red coloration of the plants increased from the inlet to the outlet of the NFT channel. Intercropping of lettuce and red chicory affected the typical taste of these vegetables by increasing the sweetness of lettuce and changing the ratio among bitter taste compounds in red chicory. These results suggest intercropping as a possible solution for improving vegetable quality in aquaponics. Although the results are interesting, they have been obtained in a relatively short period, thus investigations for longer periods are necessary to confirm these findings. Further studies are also needed to corroborate the positive effect of the presence of red chicory in the system on fish production parameters.

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“…Pangasius is an omnivorous fish species and its feed can vary from farm-made feed to formulated pellets (Hung & Huy, 2007). Generally, most of the feed contains high amounts of plant based ingredients like rice bran and ⁄ or soybean cake (Sayeed et al, 2008). Today the fish is the most often fed with industrially produced feed pellets.…”

Section: Introductionmentioning

confidence: 99%

Composition and quality attributes of conventionally and organically farmed Pangasius fillets (Pangasius hypophthalmus) on the German market

Haßler

Lehmann

Rehbein

et al. 2009

Int J of Food Sci Tech

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A range of conventionally and organically farmed Pangasius or sutchi catfish fillets available on the German market were analysed to compare both composition and quality. Differentiation of Pangasius hypophthalmus from Pangasius bocourti was achieved by RFLP-SSCP analysis. The protein content of conventionally farmed fillets ranged between 13.3 and 15.7%, whereas organically produced fillets had significantly higher protein contents of between 17.0 and 17.4%. No difference in the fat content between farming methods was observed, which varied between 1.4 and 3.2%. Polyunsaturated fatty acids represented about 24% of the total fatty acids with a high level of linoleic acid. The comparison of the proximate composition indicated that water was added to most of the conventionally farmed products, in different amounts, as well as waterbinding capacity enhancing additives. Differential scanning calorimetry was used to demonstrate the presence of polyphosphate on muscle proteins. Differences in texture, water-binding capacity and colour are discussed.

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Growth performance of thai pangus (<i>Pangasius hypophthalmus</i>) in polyculture system using different supplementary feeds

Cited by 24 publications

References 2 publications

Effect of stocking densities on growth, production and survival rate of red tilapia in hapa at fish hatchery Chilya Thatta, Sindh, Pakistan

Effect of stocking densities on growth, production and survival rate of red tilapia in hapa at fish hatchery Chilya Thatta, Sindh, Pakistan

Vegetable Intercropping in a Small-Scale Aquaponic System

Composition and quality attributes of conventionally and organically farmed Pangasius fillets (Pangasius hypophthalmus) on the German market

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