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  • Culture  (13)
  • ddc:330
  • Agriculture
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Years
  • 1
    Publication Date: 2021-05-19
    Description: Due to approaching the method of marine algae (G. corticata) mariculture in the Chabahar waters (located at NE of Oman Sea), a series of feasibility studies were carried out to identify the suitable areas for growth of this algae. In this regard, different regions of shallow waters, intertidal zones, and also natural habitats of them were selected for either collecting sample or as culture regions. During the growth periods in autumn, winter and spring (the culture and plantation were not carried out during summer time synchoronized with monsoon season). Some acceptable results were achieved that indicated the meaningful growth rate of plants in the selected stations. According to the obtained results, at the end of culture period the weight growth was 3 times more and the mean length growth of C. coricata talls was from 68 to 134mm at the end of culture period. On the other hand, this statistical analysis didn't show any significant differences in different seasons from point of weight growth. It should be mentioned that some physical and chemical factors of sea water were measured consist of salinity, temperature, DO., pH, nitrate, phosphate and turbidity.
    Description: Published
    Keywords: Physical ; Chemical ; Gracilaria corticata ; Culture ; Growth ; Coastal waters ; Marine algae ; G. corticata ; Mariculture ; Salinity ; Temperature ; pH ; Algae
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.61-72
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  • 2
    Publication Date: 2021-05-19
    Description: Responsible aquaculture is a new concept in Iran but in some countries there are good historical performances. In fact this concept is as the spacial challenge for developing countries in order to improvement of aquaculturist livelihood. In bangladesh, near to 60% of the people, which the most of are villagers, live under the poor line . Developing the NGOs and their activities to reach the responsible aquaculture objectives were so effective, since this activity has been knew as profitable acuaculture and many international workshops, symposiums and conferences have been held in this regard all the world . In this project, a complex of parameters affected on preparing manegement of warmwater fish farms have been studied with using previous studies and experiments of different countries and executive guidelines of four modules prepared including: - Guidline of preparing of warmwater fish ponds - Guidline of water enrichment and using fertilization in warmwater fish ponds - Guidline of using aeration in warmwater fish ponds - Guidline of stocking method in warmwater fish ponds
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Responsible Aquaculture ; Warmwater Fish Farms ; Warm Water ; Preparing ; Culture ; Preparation
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 87pp.
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  • 3
    Publication Date: 2021-05-19
    Description: This survey was designed in the Helleh region, to understand effects of aquaculture industry on coastal waters of Busher, in 2000. Sediment and water samples were collected from effluent canal, influent canal and sea during the 7 month period (harvest and post harvest season). The variations of selected water quality parameters were controlled monthly. Results show that, in effluent canal, estimated parameters of water was higher than other stations every month, and tend to decreased after being discharged into the sea and got closed to normal level. Comparison of above data with permit able range of municipal and aquaculture waste and comparison of present data with data of normal condition of region, show that, aquaculture industry of Helleh region has not had any obvious negative effect on the coastal waters of Bushehr, in the culture year of 2000.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Survey ; Aquaculture ; Sediment ; Samples ; Culture ; Coastal waters ; Shrimp ; Parameters ; Water quality ; Comparison
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 65pp.
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  • 4
    Publication Date: 2021-05-19
    Description: In the present study, the possibility of marine culture of Asian sea bass in the shrimp earthen ponds located in the Gwadar r region (coastal area of Oman Sea, southeastern of Iran) was investigated. To this end, Asian sea bass frys reared for 7 months including 1 month nursery and 6 months growth-period. During the culturing periods, fish were feed ad libitum by various commercial rainbow trout diets based on fish growth stages. After nursery period, the average weight of 11.05±1.5 g and survival percent of 65 % were obtained for fish. During the growth-out period, the average weight increased continually from 31.4±4.7 g in late June to 252.1±30 g at the end of growth-out period in late Dec. Also, the highest values of monthly weight gain yielded during August, Sept and Oct when fish had the average weight range of (76.9±14.4)-(188.1±12.8) g. The values of monthly feed conversion ratio (FCR) were low and similar from July to Oct and then increased in Nov and Dec. The values of total monthly feed intake (FI) increased continually from July to Oct and then with a decrease in Nov, increased again in Dec. The values of survival percent after nursery and growth-out period were 65 % and 66% respectively. Also, the average of monthly FCR, FCR at the time of fish harvesting, total FI and total harvested biomass were 1.36, 2.5, 630.5 kg and 325 kg. in conclusion, the pond culture of Asian sea bass with marine water results appropriate survival and growth rates so that fish (11.05±1.5 g) obtained marketable weight (252.1±30 g) during 6 months culturing period. It seems that first-half of year in Gwadar area is more suitable for sea bass culture since this time periods results better FCR ( fed by rainbow trout feed) and has economic justification. Also, with regular sorting operation and providing of species-specific feed for Asian sea bass can increase the Production per Unit Area.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Commercial ; Lates calcarifer ; Asian sea bass ; Culture ; Pond ; Lates calcarifer ; Rainbow trout ; Survival rate ; FCR
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 42pp.
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  • 5
    Publication Date: 2021-05-19
    Description: An experiment were conducted to evaluate The effect of feeding frequencies and stocking size on growth and feed conversion ratio (FCR) of rainbow trout (O. mykiss) in brackish water for 102 days. Three stocking sizes (10, 25 and 40 g/fish) of rainbow trout and three feeding frequencies (feeding fish twice, three times and four times per day) were examined as the same time. Fish were fed at a restricted feeding program according to the rainbow trout standard table in the definite times during the light period. The results showed that in the group with 10 g initial weight increasing the feeding frequency, some growth factors like final weight, daily growth, and weight gain. But the other factors such as food conversion rate (FCR) and specific growth rate (SGR) decrease. It means in this group (10 g) two times feeding per day is not enough for an acceptable growth rate. In the two other groups with (initial weight 25 and 40 g) although by increasing the feeding frequency, some growth factors a little increase but these differences in 95% level (p≤0.05) are not significant. Therefore in rainbow trout culture with initial weight at least 25 g two times feeding per day was enough. The results of carcasses analysis of fish, showed that by increasing the feeding frequency there were no significantly difference at 95% level between the body compositions in all of treatments. With connivance of feeding frequencies, the best FCR was in the group with 10 g initial body weight and there was not any significant difference in SGR. So according to the results, it suggests that fish should be stocked with 10 g initial body weight.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rainbow trout ; Feeding frequency ; Brackish water ; Growth ; FCR ; O.mykiss ; SGR ; Culture ; Body weight ; Conversion rate ; Body compositions ; Size
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 45pp.
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  • 6
    Publication Date: 2021-05-19
    Description: The objective of this study was to evaluate 4 levels of feeding defined as 1.ad libitum to satiation, 2.Standard feeding (based on fish size and water temperature), 3.10% less than that of standard feeding and 4.10% more than that of standard feeding on growth, feed conversion rate (FCR) and carcass quality of rainbow trout (Oncorhynchus mykiss) reared in 12 aerated flow-through fiber glass tanks (2500l rearing volume, n=150 fish per tank, body weight average 45 g) comprised of 3 replicates under the condition of brackish water (salinity 8.4 g/l) in Bafgh Fisheries Research Station in center of Iran. The increase in average body weight (BW) and size of fish in different feeding groups was significantly different (P〈0.01) during the experiment (101 days) and the highest average BW and size increase occurred in the group fed ad libitum to satiation. On the contrary, FCR (average±SE: 1.27±0.09) in this group was statistically lower than that of the other groups (P〈0.01). The chemical composition of carcass was significantly influenced by the level of feeding (P〈0.01) and the percent of moisture, crude protein and ash was the lowest in the group fed ad libitum to satiation while the crude fat percent in this group was the highest of all. According to the results obtained in this study, an ad libitum feeding regime is suggested for rainbow trout production in fish culture systems of central desert regions in Iran under the condition of brackish water. However, further investigations are needed to draw firm conclusions, especially in earth pond cultures with different conditions, enriched in live food.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Chemical ; Feeding levels ; Growth ; Rainbow trout ; FCR ; Fiberglass tank ; Brackish water ; Temperature ; Oncorhynchus mykiss ; Weight ; Size ; Culture ; Evaluation ; Level ; Body weight
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 36pp.
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  • 7
    Publication Date: 2021-05-19
    Description: Intensive culture of rainbow trout, usually done using several different methods.The objective of this study was to compare fish performance and welfare in a new design of Foster-lucas ponds (FLP) and a raceway ponds (RP) under field conditions. Currennt study was designed in two treatment with three repeats. Each pond was randomly stocked by rainbow trout fish with initial average weight of approximately 51±5 g. Stocking density was 120n/m3 during study. After 10 months of trial, fish fed diets with comertial diet (Chineh Company). Feeding operation conducted according to the manuals by consideration of water temprature, fish waight and biomas. During the 10 months experiment, the fish survival rate was high (97.39 and 98.05%). No significant differences in growth parametres were observed between RP and FLP, but in all parametres FLP was higher than RP Final weight was 0.99% higher in FLP than in RP. Water quality factors (Dissolved oxygen, PH) was better in FLP. The results confirm that when water quality is maintained in safe level ranges, growth rate of rainbow trout attained in FLS are comparable to those in RP.
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Rainbow trout ; Oncorhynchus mykiss ; Fish culture ; New design of Foster-lucas pond ; Raceway ponds ; Culture ; Stocking ; Density ; Diet ; Feeding ; Temperature ; Biomass ; Growth ; Dissolved oxygen ; pH
    Repository Name: AquaDocs
    Type: Report , Refereed
    Format: 39pp.
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  • 8
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    In:  http://aquaticcommons.org/id/eprint/26095 | 18721 | 2018-11-17 18:35:14 | 26095 | Khorramshahr University of Marine Science and Technology
    Publication Date: 2021-07-24
    Description: The properties of kiddi shrimp (Parapenaeopsis stylifera) gel added with different levels of microbial transglutaminase (MTGase) (0.6, 1, 1.4 and 1.8 units/g) were studied. Most textural parameters of the gels improved by adding MTGase espacially at higher levels (1.8 and 1.4).The expressible moisture and trichloroacetic acid content declined with the increase in MTGase content. MTGase espacially at higher levels was effective in the color of the gels so that it increased L* and decreased a*andb* value. SDS-PAGE study revealed that myosin heavy chain underwent polymerization to a higher extent in the presence of MTGase. Microstructure of gels added with 1.8 units of MTGase had more ordered fibrillar structure compared with those of gels without MTGase. Therefore it could be concluded that at MTGase play an important role in improving the gel properties of kiddi shrimp mince.
    Keywords: Agriculture ; Iran ; Microbial transglutaminase ; Gel ; Kiddi shrimp ; Mince
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 11-20
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  • 9
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    Iranian Fisheries Science Research Institute | Tehran, Iran
    In:  http://aquaticcommons.org/id/eprint/25578 | 18721 | 2018-10-06 17:39:33 | 25578 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-16
    Description: In the present study, the possibility of marine culture of Asian sea bass in the shrimp earthen ponds located in the Gwadar region (coastal area of Oman Sea, southeastern of Iran) was investigated. To this end, Asian sea bass frys reared for 7 months including 1 month nursery and 6 months growth-period. During the culturing periods, fish were feed ad libitum by various commercial rainbow trout diets based on fish growth stages. After nursery period, the average weight of 11.05±1.5 g and survival percent of 65 % were obtained for fish. During the growth-out period, the average weight increased continually from 31.4±4.7 g in late June to 252.1±30 g at the end of growth-out period in late Dec. Also, the highest values of monthly weight gain yielded during August, Sept and Oct when fish had the average weight range of (76.9±14.4)-(188.1±12.8) g. The values of monthly feed conversion ratio (FCR) were low and similar from July to Oct and then increased in Nov and Dec. The values of total monthly feed intake (FI) increased continually from July to Oct and then with a decrease in Nov, increased again in Dec. The values of survival percent after nursery and growth-out period were 65 % and 66% respectively. Also, the average of monthly FCR, FCR at the time of fish harvesting, total FI and total harvested biomass were 1.36, 2.5, 630.5 kg and 325 kg. in conclusion, the pond culture of Asian sea bass with marine water results appropriate survival and growth rates so that fish (11.05±1.5 g) obtained marketable weight (252.1±30 g) during 6 months culturing period. It seems that first-half of year in Gwadar area is more suitable for sea bass culture since this time periods results better FCR ( fed by rainbow trout feed) and has economic justification. Also, with regular sorting operation and providing of species-specific feed for Asian sea bass can increase the Production per Unit Area.
    Keywords: Aquaculture ; Iran ; Gwatr ; Sistan and Baloochestan ; Chabahar ; Lates calcarifer ; Asian sea bass ; Culture ; Pond ; Lates calcarifer ; Rainbow trout ; Survival rate ; FCR
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 42
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  • 10
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    In:  http://aquaticcommons.org/id/eprint/24840 | 18721 | 2018-07-17 00:51:24 | 24840 | Iranian Fisheries Science Research Institute
    Publication Date: 2021-07-15
    Description: Due to approaching the method of marine algae (G. corticata) mariculture in the Chabahar waters (located at NE of Oman Sea), a series of feasibility studies were carried out to identify the suitable areas for growth of this algae. In this regard, different regions of shallow waters, intertidal zones, and also natural habitats of them were selected for either collecting sample or as culture regions. During the growth periods in autumn, winter and spring (the culture and plantation were not carried out during summer time synchronized with monsoon season). Some acceptable results were achieved that indicated the meaningful growth rate of plants in the selected stations. According to the obtained results, at the end of culture period the weight growth was 3 times more and the mean length growth of G. coricata talls was from 68 to 134mm at the end of culture period. On the other hand, this statistical analysis didn't show any significant differences in different seasons from point of weight growth. It should be mentioned that some physical and chemical factors of sea water were measured consist of salinity, temperature, DO, pH, nitrate, phosphate and turbidity.
    Keywords: Aquaculture ; Gracilaria corticata ; Culture ; Growth ; Coastal waters ; Chabahar ; Oman Sea ; Iran
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 61-72
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