Abstract
Water budgeting experiments were conducted in three portable FRP carp hatchery units installed in three different places of Odisha State, India. Induced breeding programmes were conducted for spawn production for seven times in these FRP hatcheries taking rohu, Labeo rohita as the test species. Water requirement for one complete cycle of FRP carp hatchery operation was calculated to be 105 - 136.3 m3, when spawn production ranged between 0.7 and 1.4 million per operation in field condition. It was estimated that the water requirement per 0.1 million spawn production ranged between 8.86 - 15.01 m3. It was concluded that the water requirement for FRP carp hatchery operation was comparatively more when less quantity of carp spawn produced and was less when more spawn produced.
Highlights
Fiberglass reinforced plastic (FRP) carp hatchery has taken a significant role in carp seed production in India since 2003 (Mohapatra et al, 2003)
The water budget of the FRP carp hatchery unit for a breeding operation was calculated based on the water requirement data recorded from the breeding and hatching pools for the respective operations
The data of water budgeting of FRP carp hatchery operations at Madhyakhanda Village, Daspalla Block are mentioned in Tables 1 and 2; Kainchakoti Village, Betonati Block in Table 3; and Badabisola Village, Kaptipada Block in Tables 4 to 7
Summary
Fiberglass reinforced plastic (FRP) carp hatchery has taken a significant role in carp seed production in India since 2003 (Mohapatra et al, 2003). In one operation 1.0-1.2 million spawn can be produced by this gadget (Mohapatra et al, 2011a). The system is suitable in field conditions for breeding most of the cultured Asiatic carps. By December, 2014, it has been installed in 26 states and Andaman &Nicobar Island of the country (Mohapatra et al, 2015). For carp breeding and seed production, supply of good quality water is the most important factor. At the time of induced breeding and egg incubation, definite quantity of water flow is required to maintain dissolve oxygen, centrifugal moment, equilibrium dispersion of egg and hatchling in incubation pool, and purification of incubation pool
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