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
- Neurological CPC(121)うつ状態,痴呆とパーキンソニズムを呈した73歳女性
- 電力貯蔵用バナジウム系レドックスフロー電池の電解液
- ハイブリッド電気自動車レドックス・スーパーキャパシタの研究開発と実車試験
- エネルギー貯蔵装置としての二次電池の可能性:レドックス・フロー電池及び鉛蓄電池
- リチウム二次電池のク-ロガルバノメトリ- (特集:リチウム二次電池)