水産科学ジャーナル.com

  • ジャーナル h-index: 30
  • 雑誌引用スコア: 25.50
  • ジャーナルのインパクトファクター: 21.90
インデックス付き
  • 学術雑誌データベース
  • Genamics JournalSeek
  • グローバル インパクト ファクター (GIF)
  • 中国国家知識基盤 (CNKI)
  • サイテファクター
  • 電子ジャーナルライブラリ
  • 国際農業生物科学センター (CABI)
  • 研究ジャーナル索引作成ディレクトリ (DRJI)
  • OCLC-WorldCat
  • プロクエスト召喚
  • パブロン
  • ミアル
  • Advanced Science Index
  • Google スカラー
  • 化学概要
  • シェルパ・ロメオ
  • 秘密検索エンジン研究所
  • リサーチゲート
  • バルセロナ大学
このページをシェアする

抽象的な

Evaluation of African Catfish (Clarias gariepinus) Growth and Survival at Different Stocking Densities in Ethiopian Aquaculture

Getachew Senbete*, Megerssa Endebu, Nanecha Bejiga and Daba Tugie

African catfish (Clarias gariepinus) is the most suitable candidate species for aquaculture, widely farmed next to tilapia. However, its production in intensive pond culture has not yet been practiced in Ethiopia. The main objective of this experiment was to evaluate its growth performance and survival rate at different stocking densities. Fingerlings of African catfish of similar size were collected from Koka Reservoir, introduced to concrete ponds at Batu fish and other aquatic life research centre, and acclimatized for 15 days. The fish were then stocked into 4.8 m3 experimental ponds at low stocking density (T3=10 fish/m3), medium stocking density (T2=20 fish/m3), and high stocking density (T1=30 fish/m3), in duplicate. All the fish were fed with 35% crude protein pelletized feed, and water quality parameters were monitored. Data were collected for five months and analyzed using one-way ANOVA at a p<0.05 significance level for mean separation. Survival rates of fish were 100%, 98.95%, and 96.45% at low (T3), medium (T2), and high (T1) stocking densities, respectively. Daily growth rates (g/fish/day) were 0.76, 0.91, and 0.81 in T1, T2, and T3, respectively, and all values indicated good growth performance. The average mean length (cm) and weight (g) of the fish in T1 were statistically significantly different from T3 for the first four months. Individual fish weight gains in all treatments were promising. Total biomass across all treatments showed differences, with the highest biomass (7.41 kg/m3) obtained in T1, followed by T2 (6.06 kg/m3) and T3 (2.71 kg/m3). Therefore, considering higher biomass as a target in the economics of fish culture, we recommend the higher stocking density of 30 fish/m3.