Evaluation of the effectiveness and cost of different hormones in stimulating the spawning of thin lipped grey mullet, Liza ramada | ||||
| Egyptian Journal of Histology | ||||
| Article 4, Volume 41, Issue 3, September 2018, Page 275-284 PDF (1.59 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/EJH.2019.25410 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mostafa A. Mousa; Mohamed F. Kora; Noha A. Khalil | ||||
| Fish Reproduction Laboratory, National Institute of Oceanography and Fisheries, Alexandria, Egypt. | ||||
| Abstract | ||||
| ABSTRACT Introduction: It is known that mullets are not fully mature in captivity and therefore do not lay eggs. Therefore, hormonal preparations should be used to stimulate spawning. Aim of the work: To evaluate the effectiveness and cost of using different types of hormones; pituitary hormone of carp, human chorionic gonadotropin, gonadotropin - releasing hormones in stimulating spawning of Liza ramada. Materials and Methods: In this study, the pituitary gland was selected for two types of carp; common carp, silver carp, and human chorionic gonadotropin, as well as buserelin acetate and triptorelin acetate to stimulate the spawning of Liza ramada. In this regard, these hormones were tested on the rate of ovulation, fertilization rate, embryonic development and hatching rate, as well as an economic evaluation of the cost of injecting these hormones. Results: The results showed the effectiveness of the used hormones to stimulate ovulation, fertilization and hatching, but at different rates. The use of the pituitary gland of silver carp induced a higher ovulation rate than those of common carp and human chorionic gonadotropin. Buserelin acetate induced higher ovulation, fertilization and hatching rates than those of triptorelin acetate. From the economic point of view, the use of the pituitary gland of silver carp as a stimulant dose and also the use of buserelin acetate as a resolving dose is less expensive compared to the use of other tested hormones. Conclusion: The use of the pituitary gland of silver carp and buserelin acetate was effective to stimulate the spawning of mullets and less expensive. | ||||
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