Evaluation of Rice Bran and Wheat Bran as Supplemental Feed Compared to a Commercial Feed for Monoculture of GIFT Strain of Tilapia (Oreochromis niloticus) in Bangladesh
スポンサーリンク
概要
- 論文の詳細を見る
A feeding trial was conducted to evaluate the effect of rice bran and wheat bran as supplementary feed in comparison to a commercial feed for monoculture of GIFT strain of tilapia (Oreochromis niloticus). Four experimental diets such as commercial tilapia diet, rice bran, wheat bran, and a mixture of rice bran and wheat bran (50:50) were assigned to four treatments designated as T1, T2, T3 and T4 respectively. Triplicate groups of fish (initial mean weight 2.80 g) were delivered the test diets in 12 experimental ponds for four months. Result of the study showed that fish fed commercial diet (T1) had highest (P < 0.05) weight gain (147.8g) followed by T2 (124.0g), T4 (119.5g) and T3 (118.5g). Feed conversion ratio followed the similar trend as with weight gain and ranged between 1.84 and 2.23. Protein efficiency ratio and apparent net protein utilization were ranged between 2.11 and 3.34, and 11.48 and 18.32% respectively. Survival of fish was not affected by the dietary treatments and ranged between 78.67 and 83.33%. The highest fish production (kg ha^{-1}) was found in treatment T, (4173), followed by T2 (3435), T4 (3301) and T3 (3180). A simple economic analysis showed that treatment T2 generated the highest net profit of USD 2083.5 (Tk.145,848) ha^{-1} 4 months^{-1} followed by treatments T4, T1, and T3. It is concluded that the use of rice bran as supplementary feed is more economical and beneficial than wheat bran and even commercial tilapia feed for monoculture of GIFT strain in ponds.
- 2011-10-25
論文 | ランダム
- LF-006 セルの入出力観測に基づくセルオートマトンの定量的分析(人工知能・ゲーム)
- デジタルスパイクニューロンとそのスパイク列近似能力について
- A-2-24 仮想粘菌セルオートマトンによる迷路探索手法の提案(A-2.非線形問題,一般講演)
- ロジステック写像から生成されたデータを記述するセルオートマトンのルール系列とのその動的特性
- 仮想粘菌モデルによる迷路探索セルオートマトンの検討 (第20回 回路とシステム軽井沢ワークショップ論文集) -- (生命体システムと非線形ダイナミクス)