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  • Fish  (31)
  • ddc:330
  • Agriculture
  • 1
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    Chemical, microbial and sensory changes of silver carp (Hypophthalmichthys molitrix) fish treated with Black cumin (Nigella sativa L.) extract during storage at refrigerator (2017)
    Details
    Publication Date: 2021-05-19
    Description: The changes in chemical, microbial and quality sensory of fillets for silver carp fish treated with black cumin extract during refrigerated storage were investigated. The fish were divided into two groups. First group was dipped in black cumin extract with concentration of 1% and received the highest score in sensory evaluation. Then the fishes were wrapped in polyethylene package. The second group, as the control samples, were wrapped in polyethylene package after dipping in distilled water. All treatments were stored at refrigerator temperature (1±4°C). The microbial tests including total viable count, psychrotrophic count and chemical tests including peroxide index, thiobarbituric acid, free fatty acid value and total volatile basic nitrogen, with sensory evaluation, were done at 4°C over a period of 15 days. The results showed that the black cumin extract delayed lipid oxidation and protein analyses significantly in treated fishes. Psycrotrophic bacteria and total viable count of samples being treated with black cumin extract were maintained lower than the proposed acceptable limit (7 log cfu/g). In comparison to the control samples, microbial spoilage significantly decreased in treated samples. Furthermore, according to sensory analysis, the treatment with black cumin extract led to high quality during storage.The findings indicated that black cumin exerts had strong antioxidant and antibacterial impacts on silver carp fish, such that the shelf life of fillets being treated with black cumin were 2.5 times more than that of control samples during storage in refrigerator.
    Description: Published
    Keywords: Silver carp ; Black cumin extract ; Shelf life ; Hypophthalmichthys molitrix ; Nigella sativa L. ; Fish
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.71-84
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  • 2
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    Comparison of produced fish protein hydrolysete from viscera and head of Silver carp (Hypophthalmichthys molitrix) using Alcalase enzyme and internal tissue enzymes (2017)
    Details
    Publication Date: 2021-05-19
    Description: In the present study, hydrolysed protein of viscera and head of Silver carp (Hypophthalmichthys molitrix) was compared using Alcalase enzyme and internal tissue enzymes at 2 and 4 hours. The result indicated that product by Alcalase (Treatment 1) had significantly higher protein and rate of hydrolysates than that produced by internal tissue enzymes (Treatment 2). So, the highest mean (±SD) protein (68.10±1.33) was related to treatment 1-head (with Alcalase enzyme) after 4 hours and the highest rate of hydrolysates (29.36±1.35) was related to treatment 1-head (with Alcalase enzyme) after 4 hours. The result indicated that rate of hydrolysates raised as time of hydrolysates increased. However the intensity and rate of hydrolysates is reduced. The highest rate of hydrolysates occurred at 120 minutes in the first. This mode was similar for two treatments. The result can be considered as the Alcalase was preferred to internal enzyme.
    Description: Published
    Keywords: Processing ; Hypophthalmichthys molitrix ; Silver carp ; Biotechnology ; Fish ; Comparison ; Protein ; Enzyme ; Tissues
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.55-62
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  • 3
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    growth parameters and mortality rates of Talang Queenfish (Scomberoides commersonnianus) in southeastern coastal water of Iran (2018)
    Iranian Fisheries Science Research Institute | Noor, Iran
    Details
    Publication Date: 2021-05-19
    Description: Growth parameters, mortality and exploitation rates were estimated from monthly lenght frequency samples (March 2002 to Feburary 2003) for .....
    Description: Iranian Fisheries Science Research Institute
    Description: Published
    Keywords: Fish ; Growth parameters ; Mortality rate ; Length ; Weight
    Repository Name: AquaDocs
    Type: Report , Not Known
    Format: 60pp.
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  • 4
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    Effect of dietary annatto (Bixa orellana) seed powder on some hematological parameters, growth performance, and fillet color of juvenile rainbow trout (Oncorhynchus mykiss) (2020)
    Details
    Publication Date: 2021-05-19
    Description: In this study, rainbow trout diet was supplemented with different levels of annatto (Bixa orellana) seed powder and then some blood parameters (i.e. red and white blood cells count, hemoglobin concentration and hematocrit percentage), growth performance and the fillets color was evaluated. The experimental diets consisted of 0 (control), 0.25, 0.5 and 0.75% annatto powder with three replicates. A total of 360 juvenile rainbow trout (100±5 g) were stocked completely randomly in 12 tanks and reared for 40 days. The maximum amount of all measured blood parameters except white blood cells were obtained in supplemented diet with 0.75% annatto seed powder and the minimum amount of the blood indices were observed in control group (p〈0.05). Also, the highest body weight (235 g) was related to 0.75% annatto seed powder and the lowest (108.2 g) was related to control one (p〈0.05). Spectrum of red and yellow colors in the fish fillets were increased by increasing in annatto seed powder level in the diet and the highest values were recorded in the fish fillet fed with 0.75% annatto seed powder in comparison with others (p〈0.05). Therefore, the addition of annatto seed powder at 0.75% in rainbow trout diet has a positive effect on the blood parameters, and on the other hand, by increasing the growth rate and fillet coloring, probably the cost of culturing will reduce and the customer's satisfaction with the fish meat will increase.
    Description: Published
    Keywords: Oncorhynchus mykiss ; Fish ; Pigment ; Fillet ; Diet ; Blood
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.23-32
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  • 5
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    Effect of the probiotic, Lactobacillus plantarum on growth performance and haematological indices of rainbow trout (Oncorhynchus mykiss) immunized with bivalent streptococcosis / lactococcosis vaccine (2019)
    Details
    Publication Date: 2021-05-19
    Description: The present study evaluated the effect of Lactobacillus plantarum as a probiotic on the growth performance and haematological parameters of juvenile rainbow trout (Oncorhynchus mykiss) weighing 29.6±1.8 g immunized with streptococcus/lactococcus bivalent vaccine for 60 days at 16±1.5ºC. Fish were randomly allocated to 4 equal groups: probiotic (g kg^-1 feed equal to 10^8 cells g ^-1 ) supplemented diet group (group P), vaccinated fish fed with a normal diet (group V), vaccinated fish fed with probiotic (group P+V) and unvaccinated fish fed normal diet (group C). Results showed that weight gain, final weight, condition factor and thermalunit growth coefficient were improved in P+V group compared with other groups but was significantly different from groups V and C (p〈0.05). Also, feed conversion ratio in the P+V group was lower than other trails (p〈0.05). In addition, white blood cell count (WBC) in groups V and P+V were significantly higher than in both P and C groups (p〈0.05). Also, PCV was significantly increased (p〈0.05) in both P and P+V groups compared to group V and the control group. No significant difference (p〉0.05) was found in RBC, Hb, MCH, MCHC and MCV levels among the different experimental groups. These data show that application of L. plantarum could be a benefit of vaccinated trout, enhancing fish growth and haematological parameters.
    Description: Published
    Keywords: Lactobacillus plantarum ; Rainbow trout ; Haematological ; Oncorhynchus mykiss ; Streptococcosis ; Lactococcosis ; Probiotic ; Juvenile ; Haematology ; Growth ; Vaccine ; Fish
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.283-295
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  • 6
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    Assessing genetic diversity of populations of bartail flathead (Platycephalus indicus Linnaeus, 1758) in the Northern part of the Persian Gulf using AFLP markers (2018)
    Details
    Publication Date: 2021-05-19
    Description: Genetic diversity of six populations of bartail flathead (Platycephalus indicus Linnaeus, 1758) was investigated using amplified fragment length polymorphism (AFLP). A total of 118 reproducible bands amplified with ten AFLP primer combinations were obtained from 42 fishes that were collected from six different locations in the northern part of the Persian Gulf. The percentage of polymorphic bands was 57.06%. Nei’s genetic diversity was 0.1808±0.2074 - 0.2164±0.1903, and Shannon’s index was 0.2675±0.2949 - 0.3280±0.2727. The results of AMOVA analysis indicated that 66% and 34% of the genetic variation occurred within and among the populations and gene flow was 0.6454. The estimated level of population differentiation as measured by average Fst value across all loci was 0.327. Analyses revealed significant genetic differentiation with low gene flow among the six locations, indicating at least six separate populations of bartail flathead in the northern part of the Persian Gulf.
    Description: Published
    Keywords: Genetics ; Genetic diversity ; Bartail flathead. ; Platycephalus indicus ; AFLP ; Genetic ; Populations ; Fish
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.924-936
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  • 7
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    Study on the parasites of Pseudorhombus elevatus, Psettodes erumei and Brachirus orientalis from the Persian Gulf, Iran (2018)
    Details
    Publication Date: 2021-05-19
    Description: The Persian Gulf is of great economical, environmental and political importance, and includes around 205 species of fishes that only some of them have been studied parasitologically. From the order Pleuronectiformes ( ray-finned fishes), Psettodes erumei (Psettodidae), Pseudorhombus elevatus (Bothidae) and Brachirus orientalis (Soleidae) were selected for the survey. One hundred and forty eight fishes including 97 P. erumei, 43 P. elevatus and 8 B. orientalis were provided from two different regions of Iranian waters of the Persian Gulf and Oman Sea. From P. erumei, 4 species of nematodes, one cestode and one acanthocephal species are reported including: Philometra sp., Contracaecum sp., Pseudoterranova sp., Raphidascaris sp., Dasyrhynchus sp. (Trypanorhyncha) larvae and Serrasentis sagittifer. This is the first report of S. sagittifer in P. erumei from the Persian Gulf. P. elevatus had fewer species of parasites including one nematode, Contracaecum, one copepod, Heterochondria pillai and one digenea metacercaria Stephanostomum sp. Brachirus orientalis harbored one copepod and two digenea species, Allocreadium sp. and Lepocreadioides zebrini. Our research provides evidences that Indian spiny turbots have larger diversity of parasites than the deep flounders.
    Description: Published
    Keywords: Fish disease ; Pseudorhombus elevatus ; Psettodes erumei ; Brachirus orientalis ; Serrasentis sagittifer ; Pleuronectiformes ; Fish ; Parasites ; Species
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.827-835
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  • 8
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    Effect of different levels of organic acids mixture on some growth parameters and carcass composition of common carp (Cyprinus carpio) juveniles (2020)
    Details
    Publication Date: 2021-05-19
    Description: This study was carried out to evaluate the effects of different levels of dietary commercial organic acids mixture (Biotronic® Top3) on growth performance and carcass composition of common carp juveniles. Fish with an average weight of 50g were stocked in 12 fiberglass tanks with 15 fish per tank density for 60 days and fed with 0 (control), 1, 2 and 3% of dietary organic acids mixture. Results showed that the highest body weight was observed in 3% treatment (144.8±1.36 g) and the lowest value was related to the control treatment. However, the highest feed conversion ratio was obtained in the control (2.78±0.05) and the lowest value was observed in the 3% treatment (2.2±0.07). The highest specific growth rate was observed in 3% treatment (1.41±0.11%) and the lowest value was related to the control treatment (0.85±0.02%). Also, fish fed with 3% organic acids mixture showed the highest levels of carcass crude protein (18.81±0.32%) and the lowest fat content (3.28±0.14%). According to the results, it seems that the organic acids mixture at level of 3% can be used as a growth promoter and has a positive effect on growth performance, survival rate and carcass quality of common carp.
    Description: Published
    Keywords: Cyprinus carpio ; Fish ; Survival rate ; Growth performance ; Carcass quality ; Dietary
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.35-43
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  • 9
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    Effects of dietary replacement of fishmeal by yellow mealworm (Tenebrio molitor) larvae meal on growth performance, hematological indices and some of non-specific immune responses of juvenile rainbow trout (Oncorhynchus mykiss) (2020)
    Details
    Publication Date: 2021-05-19
    Description: 8-week feeding trial was conducted for juvenile rainbow trout (Oncorhynchus mykiss) to determine the optimal amount of Tenebrio molitor meal (TM) that could replace fishmeal in feeds without reducing growth performance, hematological indices and non-specific immune responses. Five isonitrogenous and isolipidic diets were formulated with TM replacing 0% (Control), 25% (TM25), 50% (TM50), 75% (TM75) and 100% (TM100) fishmeal respectively. Each diet was randomly divided into triplicate groups with 20 juveniles (initial weight 10±0.5 g). At the end of the experiment, the mean of the final weight of the fish fed diets with control (41.7±0.7) and diet containing 25% TM powder (43.1±2.1) was significantly higher than other treatments (p〈0.05). The lowest feed conversion ratio was observed in control (0.76±0.1) which had a significant difference compared to TM75 (0.93±0.06) (p〈0.05). Weight gain (WG) was affected by dietary TM inclusion and decreased with increasing TM. Red blood cells was not affected by treatment, while hemoglobin content and hematocrit decreased with increasing TM inclusion levels (p〈0.05). Plasma complement activity, the IgM level and cortisol were not affected by dietary TM. Dietary treatments had no significant effects on plasma glucose and triglyceride of fish compared to the control (p〈0.05). Plasma total protein, albumin and globulin were significantly affected by dietary TM (p〈0.05). Plasma cortisol levels and alternative complement (ACH50) pathway activity did not show any significant difference among treatments (p〉0.05). According to a broken-line model, the recommended substituted ratio of TM for fish meal was estimated to be 25% for rainbow trout obtaining maximum weight gain.
    Description: Published
    Keywords: Oncorhynchus mykiss ; Fish ; Proteins ; Meal ; Blood ; Plasma
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.13-26
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  • 10
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    The effect of isolated Lactobacillus from gut of Barbus grypus on growth performance, survival and gut microflora of common carp (Cyprinus carpio) (2017)
    Details
    Publication Date: 2021-05-19
    Description: This study evaluated the impact of dietary supplementation bacteria, Lactobacillus plantarum and Lactobacillus bulgaricus isolated from the intestine of Barbus grypus on growth performance, survival and intestinal flora of common carp. For this purpose 480 common carp (average initial weight of 40 ± 6g) were randomly divided to 4 treatments (with three replications) and fed with diet containing 5×107 CFU/g L.plantarum (Group 1), L.bulgaricus (Group 2), Lactobacillus casei (Group3) and a diet without probiotic supplementation (As control group) for 60 days. To evaluate the persistent of the bacteria in digestive system, from the 60 th day to75 th day, experimental fish were fed with diet without probiotics (control). Results showed that Specific growth rate of fish fed diets containing Lactobacillus significantly higher compared with control group (p〈0.05). Fish fed diets containing L.casei had significantly lower FCR than the control group on 60 th and 75 th of trial (p〈0.05). The protein efficiency ratio and specific growth rate of fish fed the isolated bacteria at different times of trial was higher compared to fish fed than control diet. In general, results of intestinal micro flora assessment showed that Lactobacillus bacteria significantly increased in fish fed with dietary probiotic at 30 and 60 of trial (p〈0.05) and groups 2 and 3 showed the greatest amount of Lactobacillus compared to the control group after 30 days of feeding. The results of this study showed that the addition of lactobacillus bacteria isolated from the intestines of Barbus grypus in the diet of common carp increased the beneficial micro flora population of intestinal microflora and ultimately improved growth performance and feed utilization.
    Description: Published
    Keywords: Lactobacillus ; Barbus grypus ; Microflora ; Common carp ; Cyprinus carpio ; Lactobacillus plantarum ; Lactobacillus bulgaricus ; Lactobacillus casei ; Growth ; Performance ; Survival ; Probiotic ; Diet ; Fish ; Fed
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.167-180
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