علوم زیستی دریا
Iman Amirzadekani; Nasim Zanguee; Seyed Mohammad Mousavi; Mohammad Zakeri
Abstract
270 fish (with an average initial weight: 20.04±0.19 g) were randomly distributed in 27 polyethylene tanks and fed by the carp commercial diet. The experimental treatments of 9 groups (4 groups with 3, 6, 9, and 12% of alfalfa powder, 4 groups with 1, 2, 3, and 4% of alcoholic extract and one ...
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270 fish (with an average initial weight: 20.04±0.19 g) were randomly distributed in 27 polyethylene tanks and fed by the carp commercial diet. The experimental treatments of 9 groups (4 groups with 3, 6, 9, and 12% of alfalfa powder, 4 groups with 1, 2, 3, and 4% of alcoholic extract and one control group) with three replications were considered for 8 weeks. At the end of the experimental period, the activity of digestive enzymes was measured in terms of U/mg Protein and liver composition. Based on the results, the highest levels of activity of digestive enzymes, amylase (674.74±61.57), lipase (6/21±/096), alkaline phosphatase (452.84±28.18), trypsin (282.05±19.98) and chymotrypsin (0.10±0.001) in the extracts of 3%, 3%, 3%, 4% and 4% extracts, respectively, and the lowest amount of these enzymes were observed respectively with values of 388.17±38.27 (control), 2.51±0.55 (control), 187.7±19.36 (12% powder), 0.030±0.004 (12% powder) and 132.47±11.47 (9% powder) (P <0.05). The highest amount of hepatic glycogen (338.35±192.13 µg/g tissue) was measured in the 3% extract treatment and the lowest amount of hepatic glycogen (607.01±101.23 µg/g tissue was in the control treatment (P <0.05). The highest level of liver lipids (146.51±6.05 mg/g tissue) was observed in the treatment of 6% powder and the lowest level of liver lipids (72.99±4.46 mg/g tissue) was observed in the treatment of 12% powder (P <0.05). According to the present study, adding powder and especially alfalfa extract to the diet can increase the activity of digestive enzymes and increase liver lipid and glycogen at certain levels.
علوم زیستی دریا
Adel Ghabtani; Seyed Mohammad Mousavi; Annahita Rezaie; Mohammad Zakeri; Isac Zamani
Abstract
The purpose of this study was to evaluate the effects of three commercial probiotics (Bio-Aqua®, Bio-Aqua pond®, and Multi Behsil 100) on the growth, nutrition, and biochemical parameters of common carp fingerlings. For this purpose, 210 common carp fingerlings (with a mean weight: 9.6±0.02 ...
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The purpose of this study was to evaluate the effects of three commercial probiotics (Bio-Aqua®, Bio-Aqua pond®, and Multi Behsil 100) on the growth, nutrition, and biochemical parameters of common carp fingerlings. For this purpose, 210 common carp fingerlings (with a mean weight: 9.6±0.02 g and mean length: 12.9±0.32 cm) were randomly divided into 7 treatments (treatment 1 (control): basic diet without probiotics, treatment 2: 0.2 g of Bio-Aqua®, treatment 3: 0.1 g of Bio-Aqua®, treatment 4: 0.002 g/L of Bio-Aqua pond® dissolved in tank water, treatment 5: 0.001 g/L Bio-Aqua pond ® dissolved in tank water, treatment 6: 0.2 g of Multi Behsil 100, and treatment 7: 0.1 g of probiotic Multi Behsil 100) in triplicates, and 10 fish in each replicate. The commercial probiotics were added to the commercial diet, and the fish were fed based on body weight percentage for 60 days. Based on the results, the use of probiotics Bio-Aqua® and MultiBehsil 100, caused positive effects on the growth and nutrition parameters of common carp, although the use of 0.1 g of Bio-Aqua® per kilogram of the diet of common carp led to an improvement in growth, although, increasing the amount of this probiotic at the level of 0.2 g/kg led to negative effects on growth performance. The use of Multibehsil 100, caused positive effects on common carp. Thus, the best effect on growth performance and body composition was seen in the diet containing MultiBehsil 100 (0.1 and 0.2 g/kg of basic diet). Therefore, it can be concluded that the use of MultiBehsil 100 and Bio-Aqua® have favorable effects on common carp.
علوم زیستی دریا
Somayeh Zangeneh; Solmaz Kakeshian; Solmaz Shirali; Ahmad Savari; Hossein Najafzadeh Varzi; Abdolali Movahedinia; Mohammad Zakeri
Abstract
The present study has performed to investigate the effects of different levels of soy and garlic phytoestrogens on ovarian structure in Yellowfin seabream (Acanthopagrus latus). A total of 105 Yellowfin seabream were divided in seven groups including a control group that were received standard ...
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The present study has performed to investigate the effects of different levels of soy and garlic phytoestrogens on ovarian structure in Yellowfin seabream (Acanthopagrus latus). A total of 105 Yellowfin seabream were divided in seven groups including a control group that were received standard food without any extract and six treatment groups that were received different doses of soy (2/5, 5 and 7/5%) and garlic (0/5, 1 and 2%) hydroalcoholic extract. Fish were fed daily at a rate of 3% of body weight twice for 14 days. Sampling was done in days of 0, 7, 10 and 14. In every time, a section of mid portion of gonad was cut for histological examination. The results showed that different doses of soy and garlic phytoestrogens have various effects on growth and development of gonad in Yellowfin seabream as a protandrous hermaphrodite fish, so that increase in dose and time of consumption of food containing garlic hydroalchoholic extract cause increase in number of vitellogenesis follicles and finally growth and development of ovary, while consumption of food containing soy hydroalcoholic extract cause observing of testis and immature ovaries containing previtellogenesis follicle and prevents gonad development from testis to ovary in protandrous hermaphrodite fish.
علوم زیستی دریا
najmeh azhdari; Preeta Kochanian; Mohammad Zakeri; Vahid Yavari
Abstract
In this study, the effects of dietary protein and lipid levels were designed on blood and muscle biochemical composition of Sobaity seabream juveniles (Sparidentex hasta). The six treatments were examined including three dietary protein levels (35, 40 and 45%) and two dietary lipid levels (7 and 14%) ...
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In this study, the effects of dietary protein and lipid levels were designed on blood and muscle biochemical composition of Sobaity seabream juveniles (Sparidentex hasta). The six treatments were examined including three dietary protein levels (35, 40 and 45%) and two dietary lipid levels (7 and 14%) with three triplicates. Fish with mean initial weight 36.55±0.28 g were randomly stocked in eighteen 300 l polyethylene tanks and were fed thrice daily to satiation for 56 days. According to the results, at the 14% dietary lipid level, plasma total protein index increased significantly (P
Rahman Alimi; Ahmad savari; Abdolali Movahedinia; Mohammad Zakeri; Negin salamat
Abstract
The Brown banded Bamboo shark is a benthic shark and unlike most of shark, to attract the oxygen in the water no need to move constantly. In this investigation, 36 individual of Brown banded Bamboo sharks (Chiloscyllium punctatum) were caught from Dervish's Creek in the northern Persian Gulf. Certain ...
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The Brown banded Bamboo shark is a benthic shark and unlike most of shark, to attract the oxygen in the water no need to move constantly. In this investigation, 36 individual of Brown banded Bamboo sharks (Chiloscyllium punctatum) were caught from Dervish's Creek in the northern Persian Gulf. Certain sections of the gill tissue removed and immediately fixed in Bouin’s solution. Then embedded the samples in paraffin and sectioned into 5 micrometer microscopic and stained with hematoxylin and eosin. In order to evaluate the comprehensive, sagittal and cross-section of gill tissue were studied. Microscopic results of cross-section indicated that the gill tissue structures including, filaments and lamella sections revealed. In addition, a variety of cells such as columnar cells and chloride cells (MR) were also detected. According to the results obtained for the cross section, The cell aggregates, named follicularlyarranged NKA-rich cells (follicular NRCs), were found in the gills septum. Therefore, the Brown banded Bamboo shark has three types of NKA-rich cells in the gill: (1) NKA-rich MR cells on the filament and lamella, (2) NKA-rich solitary cells (solitary NRCs) and (3) follicular NRCs on the gill septum.
علوم زیستی دریا
Rahman Alimi; Ahmad Savari; Abdolali Movahedinia; Mohammad Zakeri; Negin Salamat
Abstract
Cartilaginous fishes were used urea for osmoregulation of their internal fluids. There are several studies on osmoregulation of sharks but investigate the role of reproduction season and body lenght on the concentration of osmolytes is necessary. In this investigation, 36 individual of Brown banded Bamboo ...
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Cartilaginous fishes were used urea for osmoregulation of their internal fluids. There are several studies on osmoregulation of sharks but investigate the role of reproduction season and body lenght on the concentration of osmolytes is necessary. In this investigation, 36 individual of Brown banded Bamboo sharks (Chiloscyllium punctatum) in both autumn (before reproduction) and spring (period of reproduction) seasons were caught from Moussa Creek located at the northern of Persian Gulf. After weighing, biometry, sex determination and the numbering of sharks. Electrolyte analyzer and auto analyzer were used to measuring electrolyte and urea concentration. The results showed that blood osmolytes of sharks in the male and female sex were no significant differences (P>0/05). But, there was a significant difference between the concentrations of these substances in the autumn and spring season (P
t m; p k; m z; v y; m m
Volume 12, Issue 4 , September 2014, , Pages 60-70