Research Article

Effects of GroBiotic®-A supplementation on growth performance, body composition and liver and intestine histological changes in European Seabass (Dicentrarchus labrax) juveniles

Volume: 37 Number: 4 December 15, 2020
TR EN

Effects of GroBiotic®-A supplementation on growth performance, body composition and liver and intestine histological changes in European Seabass (Dicentrarchus labrax) juveniles

Abstract

The effects of GroBiotic®-A supplementation on growth performance, body composition, liver and intestine histology in European seabass (Dicentrarchus labrax) juveniles were evaluated. The commercial GroBiotic®-A was added to diets at four different levels (0, 1, 2 and 3%), three replicates and fed 4 times a day (9:00, 11:30, 14:00, 16: 30 hours) for 60 days as ad libitum. Total 480 European seabass juveniles with a starting weight of 1.40±0.08 g were randomly stocked into 12 tanks with a volume of 1 m3. At the end of the study, the changes observed in weight, feed conversion ratios (FCR) and survival rates were calculated as 6.69 ± 5.35-7.40 ± 5.47, 0.80 ± 0.18-0.88 ± 0.20 and 96.6 ± 1.51-100 ± 0.0, respectively. When the body composition of the control and treatment groups were compared, no statistically significant differences were observed between the protein and lipid values (p>0.05), except ash (p <0.05). Histological sections of intestinal tissue; the number of goblet cells was higher than that of the control group. The highest values were determined in the group supplemented 2% GroBiotic®-A. The highest microvillus length was found in the group added 1% GroBiotic®-A. It was detected an inverse relationship between microvillus length and contribution rates as the the GroBiotic®-A additive levels increased. Also, degeneration and necrosis was detected in hepatocyte cells of seabass juvenile fed with diets supplemented 2% and 3% GroBiotic®-A as well as increase of the number of fatty vacuoles in liver tissue due to the increase in the amount of GroBiotic®-A. In conclusion, when the growth parameters, body composition and histological data were evaluated together, the feeding group supplemented 1% GroBiotic®-A performed the best. 

Keywords

Thanks

We would like to thank Prof. Dr. Delbert M. Gatlin and International Ingredient Corporation (St. Louis, MO) for kindly providing GroBiotic®-A. We also express our gratitude to Kılıç Seafood Corporation for providing European seabass fish used in this study.

References

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Details

Primary Language

English

Subjects

Fisheries Management

Journal Section

Research Article

Publication Date

December 15, 2020

Submission Date

January 10, 2020

Acceptance Date

June 9, 2020

Published in Issue

Year 2020 Volume: 37 Number: 4

APA
Yazıcı, M., Mazlum, Y., Naz, M., Sayın, S., Ürkü, Ç., & Akaylı, T. (2020). Effects of GroBiotic®-A supplementation on growth performance, body composition and liver and intestine histological changes in European Seabass (Dicentrarchus labrax) juveniles. Ege Journal of Fisheries and Aquatic Sciences, 37(4), 389-396. https://doi.org/10.12714/egejfas.37.4.10

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