Effects of dietary microencapsulated Cymbopogon flexuosus essential oil on reproductive-related parameters in male Rhamdia quelen

In aquaculture, nutrition and supplemented diets have been shown to affect broodstock reproductive performance. In this study, we investigated the effects of dietary supplementation with Cymbopogon flexuosus essential oil (CFEO) microcapsules on reproductive-related parameters in silver catfish ( Rh...

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Bibliographic Details
Published in:Fish physiology and biochemistry 2018-08, Vol.44 (4), p.1253-1264
Main Authors: de Freitas Souza, Carine, Rampelotto, Cristine, Loureiro, Bruno Bianchi, Pereira, Fernanda Alves, Bianchini, Adriane Erbice, Corcini, Carine Dahl, Junior, Antonio Sergio Varela, Emanuelli, Tatiana, da Silva, Leila Picolli, da Costa, Sílvio Teixeira, Bertolin, Kalyne, Rovani, Monique Tomazele, Gonçalves, Paulo Bayard Dias, Heinzmann, Berta Maria, Baldisserotto, Bernardo
Format: Article
Language:English
Subjects:
Animal Anatomy
Animal Biochemistry
Animal Physiology
Animals
Aquaculture
Biomedical and Life Sciences
Breeding stock
Catfish
Catfishes - physiology
Cymbopogon - chemistry
Cymbopogon flexuosus
Diet
Diet - veterinary
Dietary Supplements
DNA
Essential oils
Fish
Fish Proteins - metabolism
Freshwater & Marine Ecology
Freshwater fishes
Gene expression
Gonadosomatic index
Gonads
Histology
Histopathology
Life Sciences
Male
Males
Microcapsules
Morphology
Nucleotide sequence
Nutrition
Oil
Oils & fats
Oils, Volatile - pharmacology
Oxidative stress
Oxidative Stress - drug effects
Parameters
PCR
Pituitary
Pituitary gland
Plant Oils - pharmacology
Reproduction
Rhamdia quelen
Spermatozoa
Testosterone
Zoology
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Summary:In aquaculture, nutrition and supplemented diets have been shown to affect broodstock reproductive performance. In this study, we investigated the effects of dietary supplementation with Cymbopogon flexuosus essential oil (CFEO) microcapsules on reproductive-related parameters in silver catfish ( Rhamdia quelen ) male broodfish. Adult male broodstocks were separated into three groups according to the concentrations of supplemented CFEO (0.0 = control; 1.0 or 3.0 mL per kg of diet). After 20 days under experimental conditions, the animals were euthanized and the gonads were harvested for gonadosomatic index, sperm analysis, oxidative stress, and histopathology; testosterone levels were measured in the plasma; gene expression of prl , smtl , pomca , and pomcb was assessed in the pituitary gland by real-time PCR. The results showed no alterations on reproductive parameters in R. quelen males treated with Cymbopogon flexuosus essential oil compared to the control-diet animals. In conclusion, CFEO microcapsules supplied for 20 days in the concentrations of 1.00 or 3.00 mL per kilogram of diet did not affect the reproduction criteria evaluated in this study in male silver catfish.
ISSN:0920-1742
1573-5168
DOI:10.1007/s10695-018-0518-9