Survival and Growth Rate of Larval Ompok pabda (Hamilton-Buchanan, 1822) of Tripura, India: Related to Efficient Feed

Abstract

Mass larval population of the captive bred stock of Ompok pabda was reared successfully for the first time in India. In order to evaluate the increase of survival and growth rate of the larvae, an ex-situ experiment was continued for about 28 days with the supply of different types of food by maintaining the water quality at standard level (water velocity = 1.01 -1.26 m/s, temperature = 24.0 -29.5°C, DO 2 = 4.8 -6.4 ppm, CO 2 = 1.2 -2.9 ppm, pH = 7.3 -8.5, DOM = 0.94 -2.23 ppm and HCO 3 = 120 -176 ppm) under a specific cycling water-flow system to the larvae. The experiment revealed significantly higher (91.72 %, r = 0.987, P \ 0.01) survival and growth rate of the larvae, when zooplankton along with tubifex were offered as feed. The impact of other feeds such as tubifex (72.28 %, r = 0.822, P \ 0.05), zooplankton (73.42 %, r = 0.762, P \ 0.05), egg custard (56.80 %) and compound feed (34.28 %) were gradually less. Specific growth rate (SGR = 6.39 ± 0.58) was also highest in the larvae fed with zooplankton plus tubifex as feed. The said feed was also effective to increase the body weight at a maximum level. Therefore, the feed prepared through the use of mass cultured zooplankton and tubifex seems to be suitable under specific rearing system to promote aquaculture.

Study on length weight relationship and feeding habits of a threaten fish Ompok pabda from Tripura, India

“…In present study the variety of foods and greenish gut content seems that they take vegetative matters as food but the general plan of the alimentary canal has been found to be carnivorous type. Ompok pabda feeds on vegetative matter and small fishes, same observation recorded by different authors [34,35] . The availability of natural food items in the environment vary with the season, temperature and time of the day [16] .…”

“…It is essential to produce adequate quantity through aquaculture that can support an alternative livelihood in Tripura. However, the major challenges for its aquaculture are paucity of wild seeds and unavailability of hatchery produced seeds [34] . Present research work finds ample information on food and feeding habit, and biology of Ompok pabda which will definitely provide directions to carry out further research on different aspects of this fish.…”

Effect of temperature on the growth performance, haematological properties and histomorphology of gill, intestine and liver tissues in juvenile butter catfish Ompok bimaculatus

“…The growth and associated physiological activities of fish largely depend on the water quality parameters. The DO level should be more than 5 ppm to efficiently support fish growth (Banik & Malla, 2015; Bhatnagar & Singh, 2010; Chang & Ouyang, 1988) and increased temperature reduced the solubility of gases in water and triggered lower DO concentrations as well (Kushlan, 1979; Sriyasak et al., 2015). The pH range between 7.3 and 8.5 is considered satisfactory for butter catfish (Banik & Malla, 2015).…”

“…The pH range between 7.3 and 8.5 is considered satisfactory for butter catfish (Banik & Malla, 2015). An intensity of NH 3 between 0.01 and 0.02 mg/L is also regarded as optimal for the aquaculture of fish (Bhatnagar & Singh, 2010).…”

Proximate and fatty acid profile of brood fish, egg and larvae of Ompok bimaculatus

“…Ompok bimaculatus, the catfish (Bloch, 1794), locally known as pabda (butter catfish), belonging to the family Siluridae of the order Siluriformes is an indigenous freshwater small fish (Banik and Malla, 2014). Banik et al (2012) studied that this catfish is commonly available in ponds, rivers, in streams, beels, inundated fields as well as streams and lakes with an extensive geographical distribution in India.…”