Fry production, induced breeding practices and cost-profit analysis of the hatcheries of Rajshahi district in Bangladesh

Abstract

This study was conducted on the 13 hatcheries of Rajshahi district from March to December 2013 to know about the fry production status, induced breeding practices and cost-profit status. Average fry production of Labeo rohita, 93.38±83.32 kg, Catla catla, 62.00±60.84 kg, Cirrhinus cirrhosus, 77.46±58.61 kg, L. calbasu, 14.20±14.60 kg, L. bata, 53.73±50.56 kg, L. gonia, 10.00±0 kg, Heteropneustes fossilis, 5.00±0 kg, Clarias batrachus, 20.00±0 kg, Hypophthalmichthys molitrix, 149.77±138.45 kg, Aristichthys nobilis, 104.54±148.11 kg, Ctenopharyngodon idella, 19.20±15.35 kg, Cyprinus carpio 108.08±77.39 kg and Barbonymus gonionotus, 23.10±14.04 kg were recorded in the surveyed hatcheries. Two types of hormone injections PG (pituitary gland) and HCG (Human chorionic gonadotropin) were used for induced breeding. The rate of 1st dose of injection of PG varied from 1 to 2 mg/kg and HCG from 100-150 IU/kg and the rate of 2nd dose of injection of PG varied between 5 and 8 mg/kg. The incubation period and hatching rate in different fish species varied from 10 to 72 hours and 55% to 80%, respectively. The average total cost, gross return and net profit of the hatcheries were 0.667±0.798, 1.152±1.636 and 0.485±0.846 million BDT respectively.

Review of the current situation, problems, and challenges in fish seed production and supply for Bangladesh's aquaculture development

“…In the past, fish culture depended utterly on the seed supply from natural sources (Debnath et al, 2020;Samad et al, 2014). However, the contribution of natural sources to the total supply of fish seed was reduced due to the shrinkage and destruction of natural breeding grounds for fish (Jega et al, 2018;Khan et al, 2022), the degradation of ecological balance (Aktar et al, 2014;Rahman et al, 2020;Shamsuzzaman et al, 2017), climate change (Aziz et al, 2021), pollution, overfishing, and the use of destructive fishing gears. Despite the high production from fish hatcheries, there is a lingering challenge in the availability of high-quality fish seed and their supply Little et al, 2002).…”

“…Therefore, some hatcheries were observed to use small and unhealthy broods (Debnath et al, 2020). For induced spawning, a variety of inducing agents, including pituitary gland (PG), human chorionic gonadotropin (HCG), ovaprime, ovitide, and ovaline are used in hatcheries (Aktar et al, 2014;Bhuyan et al, 2011;Biswas et al, 2021;Islam et al, 2017c). Another hormone used in hatcheries is 17a-methyltestosterone, a sex-reversal hormone for producing monosex tilapia (Debnath et al, 2020).…”

“…The quantity of fish seed and profit of government hatcheries were less than the private hatcheries per the Table 3. Hormonal doses for induced breeding of male and female fish of different species and their ovulation period (adapted from Sarder, 2007;Aktar et al, 2014;Debnath et al, 2020;Biswas et al, 2021) production capacity (Aktar et al, 2014). Most government and private hatcheries are located in the Mymensingh, Rajshahi, Chittagong, Khulna, and Rangpur divisions (Fig.…”

“…Research efforts on various aspects of fish seed production have been carried out in Bangladesh such as induced breeding (Aktar et al, 2014;Biswas et al, 2021;Debnath et al, 2020), fish seed supply chain (Hemal et al, 2017;Islam et al, 2017c), technical efficiency of fish hatchery (Islam et al, 2007), the prevalence of disease (Bappa et al, 2015), and hatchery management (Sharif and Abdulla-Al-Asif, 2015). However, most of these studies focused on a particular division, district, or selected areas of Bangladesh.…”