paria Akbary
Abstract
Abstract
The present study was conducted to evaluate the effect of supplementation of algae (Sargassum ilicifolium) on the growth performances (final weight (FW), condition factor (CF), survival and daily growth ratio (DGR), feed indices (feed conversion rate (FCR), voluntary feed intake (VFI), protein ...
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Abstract
The present study was conducted to evaluate the effect of supplementation of algae (Sargassum ilicifolium) on the growth performances (final weight (FW), condition factor (CF), survival and daily growth ratio (DGR), feed indices (feed conversion rate (FCR), voluntary feed intake (VFI), protein efficiency ratio (PER) and lipid efficiency ratio (LER)) and body composition (protein, fat, moisture and ash) of for Indian mackerel (Rastrelliger kanagurta) 62 days. The experiment was conducted in a completely randomized design with 120 of Indian mackerel (with average weight of 18.93±0.56g and average length of 12.30± 0.17 cm) in 4 treatments and 3 replicates (n=10 in each replicate) and included: control group without usingof supplementation of algae , an another groups (treatment 2, 3 and 4) the amounts of this algae supplement were 5,10 and 15 g/kg food The results showed that at the end of experiment, the highest FW (31.54±1.19g), CF (1.10±0.06%), DGR (23.30±0.38%), the highest PER (27.04±0.53), and the highest LER (115.76±12.84) were observed in the diet containing 15 g /kg supplement and treatment 4 (15 g/kg) and the lowest fat level of body composition (3.10±0.11%) and the highest protein level of body composition (19.46±0.26%) showed a significant difference compared with control treatment (P<0.05). Finally, the present results suggest that diet containing 15 g/kg S. ilicifolium could improve growth, feed performances and carcass quality of R. kanagurta.
Paria Akbary; Saeide Biabani; Khaled Soleimani Far
Abstract
Abstract Different fish species tolerate starvation periods using distinct strategies of activating adaptive biochemical and physiological mechanisms that enable them to cope with the adverse condition. The present study was investigated the effect of starvation on growth, chemical compositions and non- ...
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Abstract Different fish species tolerate starvation periods using distinct strategies of activating adaptive biochemical and physiological mechanisms that enable them to cope with the adverse condition. The present study was investigated the effect of starvation on growth, chemical compositions and non- specific immune parameters in grunters (Terapon jarbua) fry. In this study, 180 fry of T.jarbua studied with mean length 4.46± 0.21 cm and weight 1.98± 0.30 g that included fed and starved groups each with three replicates (30 fish per replicate) in a 60 – liter plastic tanks. Sampling of fish was performed at 10, 20 and 30 days of food deprivation. The results showed that specific growth ratio (SGR) and increased weight gain (growth parameters), protein and fat (chemical compositions) levels were significantly lower in starved group than in fed group (P
Khadije Poormehr; Amir Hoshang Bahri; Ali Taheri; Paria Akbary
Abstract
Abstract Deprivation and re-feeding periods have a special relationship with possible mechanism of compensatory growth and reduce the cost of feeding fish. The present study investigated different parameters such as feed efficiency, growth and body composition changes in order to compensate for the possible ...
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Abstract Deprivation and re-feeding periods have a special relationship with possible mechanism of compensatory growth and reduce the cost of feeding fish. The present study investigated different parameters such as feed efficiency, growth and body composition changes in order to compensate for the possible mechanism of growth retardation in Pangasius sutchi fry (with an average weight of 1.27 g ± 0.24).The survey was conducted for 60 days in Ghom, Iran. In this experiment a control group (no period of food deprivation) and treatments with alternating cycles of one day of fasting and 4-day feeding (treatment 1), 3 days of starvation and 12-day feeding (treatment 2), 6 days of starvation and 24-day feeding (treatment 3). Bioassays were repeated every 30 days.At the end of the experimental period, Specific growth ratio (SGR) and protein efficiency ratio (PER) of the experimental period, in the treatments of food deprivation compared to the control group improved (PPangasius sutchi fry, has the ability to withstand food deprivation and compensatory growth retardation at 6 days of starvation and leading to improved carcass fat
Fisheries
Bita Seraj; Mesbah Mehrzad; Paria Akbari
Abstract
In this study, in addition to the LC50 and the maximum allowable concentration, effects of silver nanoparticles on several of immune and blood serum enzymes parameters of Barbus grypus were determined For this purpose, 240 shirbut, to investigate the effects of sub lethal toxicity were divided as follows-control ...
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In this study, in addition to the LC50 and the maximum allowable concentration, effects of silver nanoparticles on several of immune and blood serum enzymes parameters of Barbus grypus were determined For this purpose, 240 shirbut, to investigate the effects of sub lethal toxicity were divided as follows-control treatment (G1), the concentration LC50 1% (0.012 mg/L AgNP) (G2), concentration LC50 2% (0.025 mg/L AgNP) (G3) and concentration LC50 4% (0.05 MG/L AgNP) (G4) and concentration LC50 8% (0.1 Mg/ L AgNP) (G5). Then on days zero, 7, 14 and 21 immune responses and serum enzymes (ALT, LDH, SGOP, SGPT) in Barbus grypus were measured. In the study, WBC counts increased significantly (P<0.05) in G2, G3, G4 and G5 treatments compared to control (G1). Serum anti-bacterial activity was enhanced in G3 in twenty first day and G4 and G5 in 14th and 21s days in compared to control. Serum lysozyme activity enhanced significantly (P<0.05) in (G4) in 14th and (G5) 14th and 21s in days compared to control. ALT and LDH Level decreased significantly in (G2), (G3), (G4) and (G5) treatments in 21s day compared to control. SGPT level decreased significantly in (G2), (G3), (G4) and (G5) in 21s day compared to control. SGOT level decreased significantly in (G3), (G4) and (G5) treatments in 21s day compared to control. According to the results of this study concentrations toxicity of nano silver increased immune responses and serum enzymes.
