Effect of dietary incorporation of fish/prawn meal on performance of Catla catla (Hamilton) during nursery phase

Abstract

Nursery evaluation of catla spawn was carried out by feeding three iso-nitrogenous diets (35% protein in raw and cooked form) for a period of 30 days. The three test diets (treatments) in raw form were: T1 -groundnut oil cake (GOC) + rice bran (RB) + vitamin-mineral (V-M) premix; T2 -GOC+RB+fish meal (FM) + V-M premix, T3 -GOC+RB+prawn meal (PM)+V-M premix. The diet groups GT1, GT2 and GT3 respectively were same feed combinations in cooked form. Incorporation of prawn meal as animal protein source led to significantly higher final weight, final length, % weight gain, specific growth rate (SGR) and protein efficiency ratio (PER) compared to diet with and without fish meal incorporation. Whereas, diet containing fish meal improved the fry growth and survival rate only when it was cooked. Cooked diet either with fish or prawn meal incorporation led to better fry growth over the respective non-cooked diets, revealing the advantage of cooking process for better nourishment in catla fry during nursery phase.

Effect of C/N Ratio Levels and Stocking Density of Catla Spawn (Gibelion catla) on Water Quality, Growth Performance, and Biofloc Nutritional Composition in an Indoor Biofloc System

“…pH below 7 negatively afects the nitrifcation rate and the growth of the cultured species [46,47]. Te average pH was in the suitable range (7.40-7.70) as reported in earlier studies for nursery rearing of spawn in indoor systems [6] except for reduced pH and alkalinity in a higher stocking density, which might have afected the survival and growth of spawn in the experimental units due to acid stress as the pH efect is related to age and development, and larval stages are most sensitive to pH changes [48,49]. Te increase in heterotrophic bacteria increases acid production through the nitrifcation process and consumes alkalinity in the intensive biofoc system which reduced total alkalinity with the increased C/N ratio and stocking density [50].…”

“…In India, Indian major carps account for 87 percent of the country's total freshwater aquaculture production [3]. Hatchery-produced seed meets demand, but hatcheries are more concerned with quantity than quality, and the spawn-to-fry yield ratio of these species is 3 : 1 in earthen ponds, with catla fry performance always being lower in terms of growth and survival [4][5][6]. Fish in the nursery stage are also often subjected to intensifcation which generally increases stress and subsequently susceptibility to infectious disease, hence requiring proper management to obtain optimum growth and survival [7,8].…”

Optimising water requirement for nursery rearing of rohu Labeo rohita (Hamilton, 1822) in large outdoor concrete tanks: influence of water depth on seed performance

“…However, Das et al (2015) observed similar growth performance for fry fed at 75 and 100% of the above mentioned ration and recommended the former, thereby saving good amount of supplementary feed. Similar attempts have also been made over the years to modify use of various other inputs to refine the carp seed production technology (Jena et al, 1998;Das et al, 2015;Kamble et al, 2017). Apart from fertilisation and supplementary feeding, depth of water in nursery also plays a significant role on the growth performance of the fry.…”