Evaluation of pea protein concentrate as partial replacement of fish meal in practical diets for juvenile tench (Tinca tinca L.) |
| |
| Authors: | Álvaro González‐Rodríguez Jesús D Celada José M Carral María Sáez‐Royuela Juan B Fuertes |
| |
| Affiliation: | Dpto. de Producción Animal, Facultad de Veterinaria, Universidad de León, León, Spain |
| |
| Abstract: | With the aim to evaluate different replacement levels of fish meal (FM) by pea protein concentrate (PPC) on survival, growth performance and body composition of juvenile tench (Tinca tinca), a 90‐day experiment was conducted with 6‐month‐old juveniles. Four practical diets (50% crude protein) differing in the level of replacement of FM protein by PPC protein were tested: 0% (control), 25%, 35% or 45%, corresponding to 0, 207.5, 290.4 or 373.3 g PPC kg?1 diet respectively. Survival rates ranged from 96.4% to 98.5%. The 25% and 35% replacement diets resulted in similar growth values (P > 0.05) to those obtained with the control diet (average of the three feeding treatments: 57.57 mm total length, 2.48 g weight and 1.87% day?1 specific growth rate). The 45% replacement diet had the lowest growth (P < 0.05). Fish with externally visible deformities ranged from 0% to 1.5%. The relation among amino acid profiles of the diets, body composition, growth performance of juveniles and amino acid requirements of other fish species is discussed. An amount of 290.4 g PPC kg?1 diet (35% replacement of FM protein) can be included in juvenile tench diets without impairing growth performance. |
| |
| Keywords: | juvenile nutrition pea protein concentrate
Tinca tinca
tench |
|
|
