Metabolic requirement for protein by pacific white shrimp, Litopenaeus vannamei


  • Nasir Kureshy The University of Texas at Austin, Marine Science Institute
  • D. Allen Davis The University of Texas at Austin, Marine Science Institute

Palabras clave:

Protein requirements, shrimp, L. vannamei, weight gain.


The dietary protein requirement of penaeid shrimp is an important nutritional consideration
because it is a major limiting nutrient for growth. In most cases, research has focused on dietary protein levels
rather than on the actual requirements for protein. In this study, four 28 day feeding trials were conducted to
determine the maintenance requirement for protein (protein required to maintain body functions with all other
nutrients provided in adequate amounts) by juvenile and sub-adult shrimp. Shrimp were offered practical
diets containing 16 or 32% crude protein. In order to estimate the maintenance requirement, weight gain was
regressed against daily protein ration. Juvenile shrimp were found to have maintenance protein requirements
in the range of 1.8-3.8 g dietary protein/kg body weight/day (g DP/ (kg BW * d)), and sub-adult shrimp were
found to have maintenance protein requirements in the range of 1.5-2.1 g DP/ (kg BW * d). Four additional
28-day trials were conducted to determine the protein requirement for maximum growth by juvenile and subadult
shrimp. On an isoproteic basis, the 16% protein diet produced significantly lower weight gain, feed
efficiency, and protein conversion efficiency values than the 32% protein diet for both the juvenile and subadult
shrimp. The 48% protein diet produced significantly lower weight gain in the juvenile shrimp, but there
was no significant effect in the sub-adult shrimp. Feed efficiency values were higher for shrimp fed the 48%
protein diet as compared to those offered the 32% protein diet. Broken line analysis was conducted on the
growth responses for each diet and each size of shrimp in order to determine the protein requirement for
maximum growth. Protein requirement for maximum growth of juvenile shrimp was found to be 46.4 g DP/
(kg BW * d) when fed a 32% protein diet and 43.4 g DP/ (kg BW * d) when fed a 48% protein diet. Subadult
shrimp exhibited a maximum protein requirement of 23.5 g DP/ (kg BW * d) when fed a 32% protein
diet and 20.5 g DP/ (kg BW * d) when fed a 48% protein diet. In summary, FE increased with the protein
content of the diet and decreased with increasing feeding rates. Weight gain corresponded to daily protein
intake. Based on these results a wide range of dietary protein levels could be used to produce maximum
weight gain. However, due to restriction on feed intake and consequently protein intake, low protein diets
may not support maximum growth.


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Cómo citar

Kureshy, N., & Allen Davis, D. (2019). Metabolic requirement for protein by pacific white shrimp, Litopenaeus vannamei. Avances En Nutrición Acuicola. Recuperado a partir de

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