title: Effects of Saccharomyces cerevisiae on survival rate and growth performance of Convict Cichlid (Amatitlania nigrofasciata).
abstract: Using probiotics can control pathogens by a variety of mechanisms. Probiotics can promote growth performance and have, therefore, become increasingly important in the aquaculture industry. Convict Cichlid belongs to the family of Cichlidae and is known for its rapid development in laboratory conditions and is suitable for behavioral examinations. The aim of this study was to evaluate the effects of Saccharomyces cerevisiae on growth performance, survival rate and body composition of Convict Cichlids (Amatitlania nigrofasciata). One hundred sixty eight Convict Cichlids (mean weight: 2.1 ± 0.12 g and mean length: 2.2 ± 0.05 cm) were fed by commercial diets with different concentrations of S. cerevisiae (0, 0.5%, 1%, 2%). At the end of the experiment, survival rate and growth indices were measured. Based on the results, growth performance significantly increased with probiotic, S. cerevisiae, specially, at the 2% probiotic level of concentration. In the present study, the best FCR (feed conversion rate), SGR (specific growth rate), CF (condition factor) and BWG (body weight gain) values were observed in a 2% concentration of S. cerevisiae. The results suggest that this yeast could improve feed utilization in this fish species.
authors.affiliation: Graduated from Faculty of Marine Natural Resources, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran;
authors.forename: F
authors.initials: F
authors.lastname: Mohammadi
authors.affiliation: Department of Fisheries, Faculty of Marine Natural Resources, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran;
authors.forename: S M
authors.initials: SM
authors.lastname: Mousavi
authors.affiliation: Graduated from Faculty of Marine Natural Resources, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran;
authors.forename: E
authors.initials: E
authors.lastname: Ahmadmoradi
authors.affiliation: Department of Fisheries, Faculty of Marine Natural Resources, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran;
authors.forename: M
authors.initials: M
authors.lastname: Zakeri
authors.affiliation: MSc in Aquaculture, Agricultural Jihad Educational Center of Khoozestan, Ahvaz, Iran.
authors.forename: A
authors.initials: A
authors.lastname: Jahedi
keywords: Amatitlania nigrofasciata; Convict Cichlid; Growth performance; Probiotic; Saccharomyces cerevisiae