Resumen del producto

The farming of shrimp is developing quickly worldwide and recently nonconventional ingredients as seaweeds have been used showing that they improve the shrimp productive variables. The aim of our study was to determine the relative contribution of dietary carbon to the growth of Litopenaeus vannamei fed with a proportion of 4% Sargassum, 4% Ulva meal and control diet, by measuring d¹³C. The bioassay was made during 30 days in 60-L tanks with two replicates. The d¹³C values were determined for each of the foods and in the muscle of shrimp on the first, 15th, and 30th day. The productive variables (weight increase, size, and survival did) not have significant differences (P > 0.05) among treatments. The food intake and feed conversion ratio were higher (P < 0.05) in shrimp fed with the control diet than with the 4% Sargassum and 4% Ulva diets. The d¹³C in the 4% Sargassum, 4% Ulva, and control diet were -20.9±0.05‰, -20.6±0.6‰, and -22.6±0.2‰. After 15 days, the isotopic discrimination was constant until the end of the experiment. The muscle of shrimp assimilated carbon of all diets, which demonstrated the potential use of combined diets and the optimization of their use in diets containing seaweed.

Palabras clave: shrimp; seaweeds; Stable carbon isotope; Ulva meal; feed conversion ratio

Para obtener una copia del documento contacta la personal de la biblioteca a través del correo bibliocicimar{a}ipn.mx