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- Title
Dietary live yeast (Debaryomyces hansenii) provides no advantages in tropical gar, Atractosteus tropicus (Actinopterygii: Lepisosteiformes: Lepisosteidae), juvenile aquaculture.
- Authors
HERNÁNDEZ-LÓPEZ, Iris Adriana; TOVAR-RAMÍREZ, Dariel; DE LA ROSA-GARCÍA, Susana; ÁLVAREZ-VILLAGÓMEZ, Carina Shianya; ASENCIO-ALCUDIA, Gloria Gertrudys; MARTÍNEZ-BURGUETE, Talhia; GALAVIZ, Mario Alberto; GUERRERO-ZÁRATE, Rocío; MARTÍNEZ-GARCÍA, Rafael; PEÑA-MARÍN, Emyr Saúl; ÁLVAREZ-GONZÁLEZ, Carlos Alfonso
- Abstract
Tropical gar, Atractosteus tropicus Gill, 1863, is an ancient freshwater fish that is commercially cultivated in southern Mexico. Currently, there is a specific diet for its culture; however, the addition of probiotics has not been investigated. The objective of this study was to evaluate the supplementation of live yeast Debaryomyces hansenii for A. tropicus juveniles on growth, productive parameters, survival, somatic index, digestive enzyme activity, and immune system gene expressions (interleukin 10, il-10, Transforming growth factor ß1, tgf-ß1, and ß2 microglobulin, b2m). Three experimental diets increased the dose of live yeast (0.5, 1.0, and 1.5%; 1014, 1015, and 1016 CFU g diet-1, respectively) and a control diet (CD; without yeast) were designed. Daily weight gain and specific growth rate were higher in fish fed with CD and 0.5% D. hansenii. High activities of trypsin, chymotrypsin LAP, and α-amylase, as well as overexpression of il-10 in the spleen, were detected in fish feed 0.5% D. hansenii. The inclusion of D. hansenii had no positive effect on aquaculture for A. tropicus, lower doses should be tested to optimize the diet.
- Subjects
MEXICO; DIGESTIVE enzymes; TRANSFORMING growth factors; ACTINOPTERYGII; YEAST; WEIGHT gain; AQUACULTURE
- Publication
Acta Ichthyologica et Piscatoria, 2021, Vol 51, Issue 3, p311
- ISSN
0137-1592
- Publication type
Article
- DOI
10.3897/aiep.51.67095