Resumen del producto

The effect of soluble fish protein (PS) on the growth, survival, protein and glycogen content in arm muscle and digestive gland of Octopus maya juveniles was evaluated for 72 days. For this, 3 levels of fish PS (10, 15 and 20%) were added to pelletized diet (Patent MX /a /2011/005278) according to the modified formulation of Martínez et al. (2014) and as a control the pelletized diet without protein addition was used. No significant differences in growth were observed (P >0.05) and a mean specific growth rate of 4.08% day-1 was determined. However, in the octopuses subjected to the diets with 15 and 20% PS, significant higher survival rates (mean 80%) were observed compared to that obtained (65%) with the control diet (P<0.05). Similarly, in muscle, the octopuses fed with the diets added with PS had a significant higher (P<0.05) glycogen content (mean 0.59 mg g-1) than that of the control ones (0.33 mg g-1). On the contrary, no differences (P>0.05) were found in the total protein content (mean 120 mg mL-1) in the muscle or the glycogen content in the digestive gland (mean 3.48 mg g-1) of the experimental organisms. According to the results, a higher consumption of soluble protein favors the survival and accumulation of glycogen in the arm muscle. In conclusion, the addition of soluble protein to the diet generates a beneficial effect on the nutrition and metabolism of juveniles of O. maya.

Palabras clave: Pelletized diet; Survival rate; Glycogen; Soluble protein

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