Abstract
“Ovaprim” manufactured by a Canada-based company, M/s Syndel laboratories, is in use all over the world today for induced spawning of fishes. Ovaprim contains 20μg of Salmon Gonadotropin Releasing Hormone (GnRH) and 10mg of domperidone /ml. ”Ovatide” is a highly potent and ready-to-use injectable formulation consisting of a synthetic GnRH analogue and a dopamine antagonist dissolved in a mixture of aqueous and organic solvents. The viscosity of the solution has been specifically maintained at a level that makes its administration in the fish particularly easy. The rapidly increasing cost and viscosity of the ovaprim proved to be the prohibitive factor. However, ovatide is low-priced and less viscous as compared to ovaprim. The data presented in this paper are the outcome of trials planned to find out the comparative efficacy and usefulness of ovatide using native major carps and Chinese carps. A comparison was carried out for both the drugs for fecundity, fertilization, and hatching rate during the induced spawning of carps. The ovatide induced complete spawning comparable to the ovaprim in all the species tested under the study.
Abdul Majid Khan, Ayesha Iqbal, Hafiz Abdullah Shakir , Muhammad Ayub. (2013) Evaluation of spawning efficacy of ovatide for carp breeding in Pakistan, Punjab University Journal of Zoology, Volume 28, Issue 2.
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