I often wonder why, after so many years, has noone thought of including peas into fish food. Could this be the perfect diet for goldfish in the prevention of swimbladder dysfunction? What’s more is that peas should be a much cheaper source of protein than fish meal.
In this article, researchers show that pea protein can substitute 35% of the fish meal, making it more economical for crayfish production.
| Aquaculture | |||||||||||||||||
| Volume 391, Number 2 (April 2013) | |||||||||||||||||
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Replacement of fish meal by pea protein concentrate in practical diets for juvenile crayfish (Pacifastacus leniusculusDana, Astacidae) from the onset of exogenous feeding | ||||||||||||||||
| Authors: | J.B. Fuertes, J.D. Celada, J.M. Carral, M. Sáez-Royuela, Á. González-Rodríguez | ||||||||||||||||
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| Source: | Aquaculture, Volume 391, Number 2 (April 2013) | ||||||||||||||||
| Page Numbers: | 159 – 164 | ||||||||||||||||
| Available Full Text: |
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| Abstract: | The aim of this study was to evaluate different replacement levels of fish meal (FM) with pea protein concentrate (PPC) on survival and growth of juvenile crayfish (Pacifastacus leniusculus). A 100-day experiment was conducted with stage 2 juveniles from the onset of exogenous feeding. Four practical diets (50% crude protein) differing in the level of replacement of FM protein by PPC protein were prepared: 0% (control diet), 25% (20.2% dietary PPC), 35% (28.2% dietary PPC) or 45% (35.5% dietary PPC). Each diet was tested on grouped or individually isolated crayfish. The 25% or 35% replacement of FM protein by PPC protein resulted in survival (average of grouped and isolated: 83.6%) and growth (grouped and isolated: 14.44mm carapace length, 674.9mg weight) similar to those obtained with the control diet. Final growth of isolated crayfish was significantly higher than that of grouped crayfish with all diets. The relation among the amino acid profile of the diets, the performance of juveniles and the amino acid requirements determined for other crustacean species is discussed. The present study provides the first data on the substitution possibilities of FM by PPC in diets for freshwater crayfish. A 28.2% PPC (35% replacement of FM protein) can be included in formulated diets (50% crude protein) for juvenile P. leniusculusduring the first 100days of intensive rearing without impairing growth or feed conversion. | ||||||||||||||||
| Citation: | J.B. Fuertes, J.D. Celada, J.M. Carral, M. Sáez-Royuela, Á. González-Rodríguez . Replacement of fish meal by pea protein concentrate in practical diets for juvenile crayfish (Pacifastacus leniusculusDana, Astacidae) from the onset of exogenous feeding. Aquaculture, Volume 391, Number 2 (April 2013), pp. 159-164, <http://ejournals.ebsco.com/direct.asp?ArticleID=41D49E7F7FDDE3515FAC> | ||||||||||||||||
| URL: | http://ejournals.ebsco.com/direct.asp?ArticleID=41D49E7F7FDDE3515FAC | ||||||||||||||||
I’ve had several direct replies via Linkedin, Facebook and email that using peas in fish diet is not a new idea (thank you for your feedback). True, but I’m wondering why it’s not used specifically in manufactured goldfish diets given that feeding peas tend to be the recommendation to abate buoyancy disorders.
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