Bicultivo de cachama blancaPiaractus brachypomusy tilapia nilóticaOreochromis niloticusen biofloc alimentadas con dietas de origen vegetal

Facultad de Medicina Veterinaria y Zootecnica. Revista

Julia Ayazo-Genes¹  Vicente Pertúz-Buelvas²  Victor Julio Atencio-García²  Samir Benicio Brú-Cordero²  Sandra Pardo-Carrasco³ 

[1] CINPIC, Universidad de Córdoba, Carrera 6 no. 76-103. Montería, Colombia.;Departamento de Ciencias Acuícolas, Facultad de Medicina Veterinaria y Zootecnia, CINPIC, Universidad de Córdoba. Carrera 6 no. 76-103. Montería, Colombia.;Departamento de Producción Animal, Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Sede Medellín. Calle 59ª no. 63-20. Medellín, Colombia.

关键词: Bromatology;    water quality;    bacterial flocs;    fish farming;    bromatología;    calidad de agua;    flóculos bacterianos;    piscicultura;   

DOI  :  10.15446/rfmvz.v64n1.65824

学科分类：兽医学

来源: Universidad Nacional de Colombia * Facultad de Medicina

【 摘 要 】

The productive performance of cachama and nile tilapia reared in biofloc and fed diets of vegetal origin was evaluated. In 1000L tanks with permanent aeration, were placed80 fish/m3, in a ratio 1:1 (cachama : tilapia); fish were fed with three levels of crude protein (CP): 16% (T16), 24% (T24) and 32% (T32) for 120 days. Parameters of growth, yield, water quality, production costs and proximal analysis of the flocs were estimated. Dissolved oxygen showed saturation above 100% and nitrogen compounds (NO2 = 0.4-0.5 mg/l, NO3 = 0.4-0.5 mg/l, NH3 = 0.2-0.3 mg/l, TAN = 2.2-2.4 mg/l)showed no statistical difference between treatments (P > 0.05). The final weight of the cachama (173.5-196.2 g) were between two and four times those obtained by tilapia(43.0-87.9 g). The tilapia recorded a better daily gain of weight in T24 (0.7 g/day); while the cachama ranged between 1.2-1.3 g/day, with no significant difference between these values (P > 0.05). The best bi-culture yield was obtained in T24 diet (11.4 ± 1.3 kg/m3), which also recorded the lowest FCA (0.9 ± 0.3). To produce one kilogram of fish cost between COP$3.148 (T24) and COP$4.445 (T32); of which the food represented between 49.2% (T16) and 63.3% (T32) and energy between 10.3% (T32) and 14.2%(T16) of total costs. Proximal analysis of the flocs recorded crude protein levels suitable(29-36% PB) for cachama and tilapia; but with low lipid levels (< 1.0%). The productive performance and the production costs allow to suggest the viability of the biofloc system for the production of fish meat with 24% CP diet of vegetal origin.

【 授权许可】

Unknown