p. 1−11
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0.05). There were
significant differences in biochemical parameters in fish fed with sangrovit compared to the control group
(P<0.05). The lowest level of cholesterol was observed in 0.05 % group and the highest level of total protein
was observed in 0.15 % group. The highest levels of glucose observed in control treatment. In order to
determine the effect of the herbal supplement on resistance to salinity stress, salinity stress was carried out
after 45 days of feeding. Blood samples were obtained at 24, 72, 120 and 168 hours after stress. Hematocrit
had significant difference in each groups (P<0.05). On the third day after stress, hematocrit levels were
decreased in all treatments. Survival and tolerance to salinity stress challenge remained unaffected by dietary
supplementation of sangrovit. The results of this study showed that addition of sangrovit to fish diet can
improve growth performance and blood biochemical parameters of common carp fingerlings.]]>
p. 13−22
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p. 23−33
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p. 35−44
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0.05). The results showed sparing effect of dietary
vitamin E on vitamin C. Meanwhile, there was no significant difference in survival of fish fed
diets supplemented with vitamin C. Deficiency symptoms such as retarded growth and anorexia
were observed in fish fed vitamin C of 0 mg/kg at either of the dietary vitamin E levels. These
results showed that dietary vitamin C requirement is 200 mg AA/kg diet when juvenile Siberain
sturgeon, Acipenser Baerii fed a vitamin E deficiency diet while vitamin C requirement is 100
mg AA/kg diet when fish fed a diet supplemented with 200 mg/kg vitamin E.]]>
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b0.05). The chemical
composition analysis of fish meat showed that there were no significant effects between control and
25% and 50% earthworm in diet for dry matter, crude protein and ash, but fat content significantly
decreaed as earthworm increased (P < 0.05). This present study showed that the earthworm (Eisenia
fetida) can be used in rainbow trout diet up to 50% instead of fish meal.]]>
p. 59−67
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p. 69−76
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p. 93−105
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p. 107−123
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p. 125−138
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p. 139−150
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p. 151−163
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p. 165−177
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p. 179−189
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0/05). These results showed that the fish by less than the length classes were more sensitive to environmental changes. For this reason, their immune indices improved. Therefore, any change in fish blood immunological factors can lead to the secondary response.]]>
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0.05). Maximum pH (8.27 ± 0.09) and maximumdissolved oxygen (6.37 ± 0.56 mg/lit) was in water exchange treatment. Maximum andminimum level of ammonia was 0.43± 0.34 and 0.09± 0.07 mg/lit in water exchange treatmentwithout floc and biofloc treatment with adding starch of carbon sources, respectively and showedsignificant difference between treatments (P <0.05). The highest increase in body weight(1640.43± 231.28 mg), growth rate (51.26± 7.23 mg per day), specific growth rate (8.97± 0.42%/day) and biomass (190.29± 26.83mg) was observed in biofloc treatment with adding molassand the highest survival rate (90± 0.77%) was obtained in biofloc treatment with adding mixtureof carbon sources. The highest feed conversion ratio (1.52±0.23) and the lowest feed efficiency(66.81±7.95) were obtained in water exchange treatment without floc, showing significantdifference compared to the other treatments (P <0.05). The results showed that using biofloctechnology with zero- water exchange system and adding carbonaceous organic matter could helpto recycle waste and improve the water quality. Moreover, the presence of biofloc improvedgrowth performance, feed utilization and production of western white shrimp in zero waterecxhange rearing system.]]>
p. 77−91
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p. 139−150
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