Periphyton-based cage culture of Nile tilapia: An interesting model for small-scale farming

被引：11
|
作者：
Garcia, F. [1 ]
Sabbag, O. J. [2 ]
Kimpara, J. M. [3 ]
Romera, D. M. [4 ]
Sousa, N. S. [1 ]
Onaka, E. M. [1 ]
Ramos, P. [2 ]
机构：
[1] APTA SAA, Inst Pesca, Rodovia Washington Luiz,SP 310,Km 445, BR-15025970 Sao Jose Do Rio Preto, SP, Brazil
[2] FEIS Univ Estadual Paulista Julio de Mesquisata, UNESP, Ave Brasil,56 Ctr, BR-15385000 Ilha Solteira, SP, Brazil
[3] Brazilian Agr Res Corp, Embrapa Mid North,BR 343,Km 35, BR-64200970 Parnaiba, PI, Brazil
[4] APTA SAA, Inst Agron Campinas, Postal Box 61, BR-15500970 Votuporanga, SP, Brazil
来源：
AQUACULTURE | 2017年 / 479卷
基金：
巴西圣保罗研究基金会;
关键词：
Profitability; Production cost; Economics; Oreochromis niloticus; OREOCHROMIS-NILOTICUS;
D O I：
10.1016/j.aquaculture.2017.07.024
中图分类号：
S9 [水产、渔业];
学科分类号：
0908 ;
摘要：
We evaluated the production costs and the profitability of using bamboo substrates to enhance periphyton production in cages, in combination with a restricted diet and reduced stocking densities. Nile tilapia (46.56 +/- 2.53 g) were placed in 21 cages, and the inclusion of bamboo substrates was evaluated in three different stocking densities (40, 60, and 80 kg of fish/m(3)) in association with two feeding schemes (100% and 50% of daily ration). No bamboo substrates were included in the control group. The inclusion of the bamboo substrates in cages increased fish weight gain, shortened the farming cycle length, and improved the feed conversion ratio. The proposed production model of Nile tilapia farming in cages with substrates offers a way for small-scale producers to increase the efficiency of the system with annual operating income up to 57% higher and the profitability index up to 87% higher than the currently used system adopted by Brazilian farmers.
引用
收藏
页码：838 / 844
页数：7
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