Effect of native and modified starches on nutritional and physiological performance of wild juveniles of red grouper (Epinephelus morio)

Autores/as

  • Ana Castillo Posgrado de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México (UNAM), México.
  • Leticia Callejas Facultad de Medicina Veterinaria y Zootecnia, UNAM, México.
  • Carlos Alfonso Álvarez-González Laboratorio de Acuicultura Tropical, DACBIOL, Universidad Juárez Autónoma de Tabasco, México
  • Carlos Maldonado Unidad Multidisciplinaria de Docencia e Investigación de Sisal, Fac. de Ciencias,UNAM-México
  • Gerard Cuzon Unidad Multidisciplinaria de Docencia e Investigación de Sisal, Fac. de Ciencias,UNAM-México
  • Martha Gabriela Gaxiola-Cortés Unidad Multidisciplinaria de Docencia e Investigación del SISAL-UNAM

DOI:

https://doi.org/10.19136/era.a5n15.1548

Resumen

The aim of this study was to evaluate carbohydratesutilization by wild red grouper Epinephelus morio.Juveniles were fed during 93 d on a selection of starches: native raw cornstarch (RCS), waxy cornstarch (WCS), raw potato starch (RPS) and gelatinized potato starch (GP) at 20% inclusion level. The best growth was obtained in fish fed cornstarch either native raw of waxy cornstarch (p<0.05). Hepatosomatic index and blood glucose (40 mg dL-1) were similar as well as hematocrit values (50%) (p>0.05), whereas glycogen content increased up to 200 mg g-1with waxy cornstarch. Specific activity of a-glucosidase and α-amylase remained stable (p>0.05). Hepatic glycolytic enzymes increased with raw native and waxy cornstarch (p<0.05); metabolic enzyme glucose 6 phosphate dehydrogenase (G6P-DH) was activated with raw native cornstarch (p<0.05) while pyruvate kinase (PK) remained stable regardless of treatments (p>0.05). Hexokinase (HK1) and glucokinase (GK) varied according to carbohydrate source: values were higher with cornstarches than potato starches (p<0.05).  Pentose monophosphate shunt (HMS) remained not altered by starch sources (p>0.05). In final, the low size of granules from cornstarch favored the assimilation in liver of wild juveniles red grouper.

Biografía del autor/a

Leticia Callejas, Facultad de Medicina Veterinaria y Zootecnia, UNAM, México.

Facultad de Medicina Veterinaria y Zootecnia, UNAM, México.

Publicado

2018-09-03

Cómo citar

Castillo, A., Callejas, L., Álvarez-González, C. A., Maldonado, C., Cuzon, G., & Gaxiola-Cortés, M. G. (2018). Effect of native and modified starches on nutritional and physiological performance of wild juveniles of red grouper (Epinephelus morio). Ecosistemas Y Recursos Agropecuarios, 5(15), 491-500. https://doi.org/10.19136/era.a5n15.1548

Número

Sección

ARTÍCULOS CIENTIFICOS

Artículos más leídos del mismo autor/a