~1~ International Journal of Fisheries and Aquatic Studies 2015; 3(1): 01-04 ISSN: 2347-5129 (ICV-Poland) Impact Value: 5.62 (GIF) Impact Factor: 0.352 IJFAS 2015; 3(1): 01-04 © 2015 IJFAS www.fisheriesjournal.com Received: 01-07-2015 Accepted: 02-08-2015 Sharad R Surnar Department of Aquaculture, College of Fisheries, Maharana Pratap University of Agriculture & Technology Udaipur, Rajasthan-313001. India. AD Kamble Department of Aquaculture, College of Fisheries, Maharana Pratap University of Agriculture & Technology Udaipur, Rajasthan-313001. India. NS Walse Department of Aquaculture, College of Fisheries, Maharana Pratap University of Agriculture & Technology Udaipur, Rajasthan-313001. India. OP Sharma Department of Aquaculture, College of Fisheries, Maharana Pratap University of Agriculture & Technology Udaipur, Rajasthan-313001. India. VP Saini Aquaculture Research and Seed Unit, Directorate of Research, Maharana Pratap University of Agriculture & Technology Udaipur, Rajasthan-313001. India. Correspondence Sharad R Surnar Department of Aquaculture, College of Fisheries, Maharana Pratap University of Agriculture & Technology Udaipur, Rajasthan-313001. India. Hormone administration with induced spawning of Indian major carp Sharad R Surnar, AD Kamble, NS Walse, OP Sharma, VP Saini Abstract Induced Breeding (IB) is the most significant advancements in the field of aquaculture to induce reproduction in fish. It is a ttechnique to stimulate ripe fish breeders by pituitary hormone or any other synthetic hormone to breed in captive condition by promotion of timely release of sperms and eggs. Identification of donor fish can be done on the basis of Secondary Sexual characters which are prominent in the breeding season of fishes. The preparation of carp pituitary extract the glands are removed carefully from freshly killed the fish called donor fish. For best result the donor fish should be fully ripe and mature. Common carp is the best donor fish, because it breeds throughout the year and the individuals are available in all parts of the world. Keywords: Induced breeding, Pituitary extract, Ova prim, Ovapel 1. Introduction India is the third largest farmed fish producer ranking second globally. The current fish production in India has reached 8.3 million tonnes, which expected to reach 12.5 million tonnes by 2025. The first experiment in induced breeding of fish in India was made by Hamid Khan in 1937 when Khan tried to induce spawn C. mrigal by the injection of mammalian pituitary gland. Later H.L. Chaudhari succeeded in induced spawning on small carp species, Esomus danricus by administering the intra-peritoneal injection of catla pituitary gland. The first success in induced breeding of Indian Major Carps (L. rohita and C. mrigala) was in the year 1957 by H.L Chaudhari and K. H. Alikunhi [4] at Central Inland Fisheries Research Institute, substation, Cuttack (Orissa). Induced Breeding (IB) is the most significant advancements in the field of aquaculture to induce reproduction in fish. It is a technique to stimulate ripe fish breeders by pituitary hormone or any other synthetic hormone to breed in captive condition by promotion of timely release of sperms and eggs. Farmed carp seed production has increased from 6,321 million fry in 1985-86 to over 45,000 million fry in recent year. Indian major carp was induced bred in eco-carp hatchery with 4 different inducing agents, viz. carp pituitary extract, Ovaprim, Ovatide, Ovapel. 2. Why induced breeding is necessary Spawn collected from natural water is not pure. The presence of some undesirable wild species and sorting of pure seed is quite impossible with availability of seed is quite uncertain but carps attain full maturity in confined water but do not breed. This method is easily learnt by layman without much training with cost of expenditure very low than the natural collections of spawns. 3. Technique of induced breeding 3.1 Reproductive hormones for induced breeding 1. Pituitary gland extractions 2. Ovaprim 3. Ovatide 4. Ovapel 4. Induced breeding with pituitary gland extraction Very effective and dependable way to obtain pure seed of cultivable fishes practiced on extensive scale in India and other countries in the world. It involves injecting mature female