Latest Articles from Acta Ichthyologica et Piscatoria Latest 1 Articles from Acta Ichthyologica et Piscatoria https://aiep.pensoft.net/ Thu, 28 Mar 2024 23:58:40 +0200 Pensoft FeedCreator https://aiep.pensoft.net/i/logo.jpg Latest Articles from Acta Ichthyologica et Piscatoria https://aiep.pensoft.net/ Dietary live yeast (Debaryomyces hansenii) provides no advantages in tropical gar, Atractosteus tropicus (Actinopterygii: Lepisosteiformes: Lepisosteidae), juvenile aquaculture https://aiep.pensoft.net/article/67095/ Acta Ichthyologica et Piscatoria 51(3): 311-320

DOI: 10.3897/aiep.51.67095

Authors: Iris Adriana Hernández-López, Dariel Tovar-Ramírez, Susana De la Rosa-García, Carina Shianya Álvarez-Villagómez, Gloria Gertrudys Asencio-Alcudia, Talhia Martínez-Burguete, Mario Alberto Galaviz, Rocío Guerrero-Zárate, Rafael Martínez-García, Emyr Saúl Peña-Marín, Carlos Alfonso Álvarez-González

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 β1, tgf-β1, and β2 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.

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