<0.05). Fertilization, eyeing, and hatching percentages were significantly higher in ovaprim treatments than the pituitary treatment in both farmed (93.20±1.12, 94.36±0.46, 91.87±1.93) and wild (95.51±1.42, 94.90± 0.01, 92.43±0.15) broodstocks (p < /em><0.05). A positive correlation was observed between broodstocks weight, extracted egg weight, and working fecundity with each other in both broodstock groups. However, all three parameters were negatively correlated with the number of eggs per gram and the weight of the broodstocks and the weight of the extracted egg were negatively correlated with the relative fecundity. Also, the percentages of fertilization, eyeing, and hatching rates showed a highly significant positive correlation with each other (p < /em><0.01). In the study of relationships between variables by stepwise regression, no significant relationship was observed between the fertilization, eyeing, and hatching percentages with the weight of broodstocks and the weight of the extracted egg, but in both groups of broodstocks, the quality of eggs had a positive and significant relationship especially with the single-stage injection of ovaprim compared to the pituitary gland. Therefore, the single-stage injection of ovaprim is more suitable for both farmed and wild common carp. Although extracted egg weight and working fecundity were lower in wild than farmed broodstocks due to lower weight of them, hatching percentage in wild broodstocks was higher than farmed broodstocks with a coefficient of 2.18.]]>
p. 1−14
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p. 15−23
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p. 24−36
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<0.05). In addition, the immunity indicators in the algae treatment showed a higher increase compared to the yeast one (p < /em><0.05).]]>
p. 37−44
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p. 45−57
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p. 58−64
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<0.01). The results show that maximum lenght abundance of conical lift net in Babolsar and Amirabad fishing ports are 11.5-12.5 cm.]]>
p. 65−77
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<0.05). Also, the results of fatty acid composition showed that saturated fatty acids in SW treatment had a significant increase compared to AL treatment. However, unsaturated fatty acids in SW treatment showed a significant decrease compared to AL (p < /em><0.05). In addition, a significant downward trend in the water quality parameters (phosphate, nitrate, and nitrite) was observed in SW treatment on day 30. The highest and lowest contents of fat and moisture were observed in SW treatment (p < /em><0.05). Therefore, the production of Azolla in Beluga farm effluent can be an effective and cost-effective method due to the rapid growth rate, high ability to absorb the amount of phosphorus and nitrogen in water, as well high nutritional values (protein and lipid contents) and high diversity of fatty acids.]]>
p. 78−89
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>0.05).]]>
p. 90−103
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p. 104−118
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<0.05). Therefore, LC50 of this substance was calculated in 24 hours as 2278.12, in 48 hours as 1251.35, in 72 hours as 552.31 and in 96 hours 312.40 ppm. Hence the LC50 96 h concentration of HUWA-SAN TR50, is close to therapeutic dosage and it has a relatively more different than its toxic doses. Therefiren, this can be recommended in practical treatment in Rainbow trout hatcheries.]]>
p. 119−127
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p. 128−140
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p. 141−160
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<0.05) but exposure to Chlorpyrifos and prebiotic in combination increased the mentioned factors compared to the control and prebiotic treatments alone. However, the levels of white blood cells and erythrocytes, hemoglobin, hematocrit, and MCHC were higher than the other treatments in the combination of 0.2 and 0.1% prebiotic and Chlorpyrifos. It is concluded that the 0.1 and 0.2% prebiotic level could have the best effect on the blood indices of Nile tilapia.]]>
p. 161−170
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p. 171−177
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>0.05). There were no significant differences in crude protein, crude fat, moisture and ash contents of the whole body among the groups (p < /em>>0.05). According to the results, due to the importance of fish meal and its high price, nutritional value of Aqupro and easy accessibility, best growth performance and no negative impact on mentioned parameters in AP60 and AP80 treatments, using of Aqupro up to 60% recommended in the Siberian sturgeon diet.]]>
p. 178−191
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