Early Breeding and Seed Production of Indian Major Carps: Attributes of the Innovation from an Adaptive Trial

Abstract

An adaptive trial was undertaken for early breeding of carps in four private hatcheries of Khordha district in the state of Odisha, India. CIFABROODTM, a promising carp brood diet was used to observe the breeding performance and seed production of carps in early monsoon. CIFABROODTM was provided in experimental ponds while farm made feed prepared by the hatchery owners were used in the control ponds. After 45days of feeding, fishes in the trial ponds became mature while in the control ponds fishes were immature. Average fertilization rate was observed to be 88.14% with an average spawn recovery of 2.14 lakh spawn/kg body weight of female. Highest average fertilization rate was found in mrigal followed by rohu and catla. Similarly average spawn recovery per kg of female body weight indicates a highest recovery in rohu followed by mrigal and catla. In turn the spawn buyers had an average survival rate of 42.18% from spawn to fry and 73.5% from fry to fingerling rearing. This adaptive trial has reconfirmed CIFABROODTM as a proven carp brood diet which has shown to impact at all the three crucial stages of seed production. The positive outcomes of the attributes of innovation were highly towards an increased rate of adoption.