Enhancing Reproductive Performance of Freshwater Finfish Species through Dietary Lipids

Abstract

Dietary lipid manipulation in the feed of commercially cultured finfish is used not only to improve production and culture but also to enhance their reproductive performances. The inclusion of lipid in broodstock diet positively affects growth, immunological responses, gonadogenesis, and larval survival. In this review, existing literature on the importance of freshwater finfish species to aquaculture and the inclusion of dietary lipid compounds in freshwater fish feed to accelerate the reproduction rate is being summarized and discussed. Although lipid compounds have been confirmed to improve reproductive performance, only a few members of the most economically important species have reaped benefits from quantitative and qualitative lipid studies. There is a knowledge gap on the effective inclusion and utilization of dietary lipids on gonad maturation, fecundity, fertilization, egg morphology, hatching rate, and consequently, larval quality contributing to the survival and good performance of freshwater fish culture. This review provides a baseline for potential future research for optimizing dietary lipid inclusion in freshwater broodstock diets.

The Reproductive Biology of Puye (Galaxias maculatus) under Experimental Culture

“…Secondly, the variation in fecundity could also be explained by the size and age of the females, where larger females present greater fecundity. Several studies have reported that the number of eggs produced by a female increases with size [3,[47][48][49]. In the present study, a high correlation was found between fecundity and weight among females, but not length; thus, heavier females produced more eggs compared to lighter females.…”

Influence of daily feed ration on growth and condition of juvenile pikeperch (Sander lucioperca) reared in a recirculating aquaculture system (RAS)

“…This observation could indicate a negative effect of higher DFR on the GSI. The amount of feed may affect the reproductive performance of the fish, which is an important factor in aquaculture (Izquierdo et al 2001;Torsabo et al 2022).…”

Changes in the fatty acid profile of fish oil derived from Pangasius catfish (Pangasianodon hypophthalmus) processing waste due to variations in fish size and heating temperatures

“…6 Furthermore, the demand for fish oil as fish feed is expected to exhibit a compound annual growth rate (CAGR) of approximately 5.2% from 2021 to 2028. 7 Hence, scientists have assessed the impacts of substituting fish oil with a combination of Schizochytrium sp. and Microchloropsis gaditana, including camelina oil, on the growth and efficiency of fish feed utilization.…”