Introduction of Artemia nauplii during Chinese perch (Siniperca chuatsi) first feeding: Effects on larvae growth, survival, gene expression and activity of critical digestive enzymes

Peng, Di; Liang, Xu‐Fang; Wang, Yuye; Tang, Shulin

doi:10.1016/j.aquaculture.2023.739619

Cited by 2 publications

(1 citation statement)

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“…Initially, the primary functions to develop are vision and digestion, as evidenced by the formation of two black spots which become eyes and the development of the digestive organs, like also observed in yellow rasbora fish (Retnoaji et al, 2023). The depletion of the yolk sac within the first few days introduces the necessity for the larvae to commence external feeding, primarily the natural food (Peng et al, 2023). This transition is vital as it coincides with the development of skeletal structures and motoric functions, notably the formation of fins.…”

Section: Developmental Phases and Early Challengesmentioning

confidence: 99%

Case Study: Growth Performance and Business Analysis of Brown-Marbled Grouper (Epinephelus fuscoguttatus) in Nursery and Grow-Out Cultivation

Diatin,

Gandhi,

Vinasyiam

2024

jfh

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Grouper fish, particularly the brown-marbled grouper (Epinephelus fuscoguttatus), are among the most economically significant marine species widely farmed and exported. This study aimed to analyze the growth performance and business analysis of the production of brown-marbled grouper, both in nursery and grow-out segments. The research was conducted using a case study method at a governmental production and research center located in Lampung Province, Indonesia. Primary data were collected through field observations, while secondary data were obtained from interviews with farm personnel. The study revealed that the nursery phase faced significant challenges, with larval survival rates as low as 4.2%. In contrast, survival rates improved considerably in larger fish, demonstrating better resilience as they grow (reaching 92-93%). From a business perspective, the grow-out activity was found to be more profitable due to lower investment costs. However, it requires a longer period to raise the fish to market size. Both nursery and grow-out operations proved to be profitable, with respective R/C ratios of 1.6-2.0. Overall, while grouper farming is economically viable, it requires careful management to overcome the high mortality in the early life stages and to optimize the investment cost-effectiveness of the nursery phase.

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Section: Developmental Phases and Early Challengesmentioning

confidence: 99%