Title
Use of Potato Starch in Diets of Tropical Gar (Atractosteus tropicus, Gill 1863) Larvae
Author
CARLOS ALFONSO FRIAS QUINTANA
CARLOS ALFONSO ALVAREZ GONZALEZ
DARIEL TOVAR RAMIREZ
RAFAEL MARTINEZ GARCIA
SUSANA CAMARILLO COOP
EMYR SAUL PEÑA MARIN
MARIO ALBERTO GALAVIZ ESPINOZA
Access level
Open Access
Publication reference
doi: DOI: 10.3390/fishes2010003
URL/URL: http://www.mdpi.com/journal/fishes
ISSN/ISSN: 2410-3888
Subjects
Summary or description
"Tropical gar, Atractosteus tropicus, is a carnivorous fish species from Southern México with high value and acceptance in local markets. Therefore, the present study aims to spare proteins in diets for larviculture of this species. An experiment was performed using three different experimental diets with increasing carbohydrate levels based on potato starch (S) and decreasing protein content (P) and total energy: 16% S (16% S–44% P), 22% S (22% S–40% P) and 28% S (28% S–36% P). Tropical gar larvae (five days post-hatching, 2.1 mm
average notochordal length) were assessed for growth, survival, degree of cannibalism, and digestive enzyme activities for 30 days. Highest growth and survival (24%), as well as the lowest cannibalism (33%), was seen in larvae fed the 28% S diet, and these larvae
also had the highest lipase, amylase and glucosidase activities (0.28, 0.56 and 0.11 units, respectively). Protease activity (alkaline protease, trypsin, chymotrypsin, and leucine aminopeptidase) was higher in the larvae fed the 22% S diet than in those given the 16% S and 28% S diets. In conclusion, dietary inclusion of potato starch at 28% S enhanced growth, survival and some digestive enzyme activities, and decreased cannibalism in the larval gar. Potato starch could replace dietary protein as a major source of energy for A. tropicus larvae, thereby reducing the cost of diets."
Publisher
Multidisciplinary Digital Publishing Institute
Publish date
2017
Publication type
Article
Publication version
Published Version
Information Resource
Format
application/pdf
Source
Fishes
Language
English
Source repository
Repositorio Institucional CIBNOR
Downloads
226