Seyed Mohammad Mousavi; Fereshteh Ghaeidi; Nasim Zanguee; Mohammad Zakeri
Abstract
Abstract
In this study, the effect of dietary intake of different levels of Cumin (Cuminum cyminum) extract on juveniles of Cyprinus carpio, was studied. For this purpose, 150 common carp juveniles (with mean weight: 20.3±0.89 gr) were randomly distributed in 15 fiberglass tanks (10 fish per ...
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Abstract
In this study, the effect of dietary intake of different levels of Cumin (Cuminum cyminum) extract on juveniles of Cyprinus carpio, was studied. For this purpose, 150 common carp juveniles (with mean weight: 20.3±0.89 gr) were randomly distributed in 15 fiberglass tanks (10 fish per tank) and fed by commercial diet containing 0% (control group), 0.5%, 1%, 1.5% and 2% of ethanolic cumin extract (treatment groups). The fish were fed by apparent satiation thrice the day for 8 weeks. At the end of the experimental period, different growth parameters including weight gain, Daily growth rate, Specific Growth Rate, some condition factors, viscera somatic index, hepatosomatic index and nutritional indices including food conversion ratio, protein efficiency ratio, lipid efficiency ratio, total feed intake, net protein utilization, net lipid utilization were assessed. The results showed that administration of different levels of cumin extract in diets of juveniles of Cyprinus carpio caused an increasing effect on weight gain, daily growth rate and specific growth rate (P<0/05) compared to control group. The highest rate of these factors was observed in diet containing 2% of cumin extract and the lowest rate was for control group. According to the results of this study supplementation of 2% cumin extract to diet of juveniles of Cyprinus carpio may improve growth parameters and this herbal extract may presented as a growth promoter in carp culture.
Seyed Mohammad Mousavi; Amin Tabibi; Vahid Yavari; Mohammad Zakeri; Arash Jahedi; Hossein Pasha Zanoosi
Volume 5, Issue 3 , March 2017, , Pages 39-50
Abstract
Gatan has distributed in the main rivers in Khoozestan province and there are few researches on propagation and reproductive system of this species. Therefore, this study has focused on using of activating solutions on sperm activity and fertilization capability in Gatan fish in comparison with Grass ...
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Gatan has distributed in the main rivers in Khoozestan province and there are few researches on propagation and reproductive system of this species. Therefore, this study has focused on using of activating solutions on sperm activity and fertilization capability in Gatan fish in comparison with Grass Carp. In this research, 5 activating solutions together with workshop water and distilled water were used in triplicate. After transferring of brood stocks to the propagation workshop and after hormontherapy, sperm and ovules were collected. Assessment of sperm activity was done and after mixing of sperm and ovules, activating solutions were used. After 12 hours of fertilization time, fertilization percentage was assessed. Based on results obtained from this study, the highest sperm activity and fertilization rate was seen in Gatan fish when a2 (Tris Hcl 20 mM, NaCl 50mM), a3 (CaCl2 2.5mM) and a4 (Tris Hcl 30 mM, KCl 30mM, NaCl 50mM) solutions were used and lowest sperm activity was seen when workshop water and distilled water were used in this species (P<0.001). Also, the highest sperm activity and fertilization rate was seen in Grass Carp when a2, a4 and 4030 solutions were used (P<0.001). Based on the results, finally it is revealed that the highest sperm activity and fertilization per cent among activating solutions has resulted from a2 activating solution combining from NaCl and Tris-Hcl in both fishes examined in this study which was led to increase of around seven times in sperm activity and around 20% in fertilization per cent.
