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All Journal Veterinary Biomedical and Clinical Journal Indonesian Educational Research Journal
Bello, Umar
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Biochemistry, Genetics & Molecular Biology Education Health Professions Immunology & microbiology Veterinary

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Journal : Veterinary Biomedical and Clinical Journal

 1 
Effects of Acetone Extract of Green Tea (Camellia sinensis) on Diameter, Viability, and Germinal Vesicle Breakdown Rate of Zebrafish Oocytes (Danio rerio) Exposed to Heat Stress as an Animal Model Tuska, Habib Syaiful Arif; Hidayah, Aaliyah Nurul; Lonameo, Bonick Kartini; Bello, Umar; Budiono
Veterinary Biomedical and Clinical Journal Vol. 6 No. 2 (2024):
Publisher : Faculty of Veterinary Medicine Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.VetBioClinJ.2024.006.02.2

Abstract

Global warming is characterized by increasing temperatures of the earth's atmosphere, ocean and land, resulting in extreme climate change. The effects of climate change will affect animal health through increased ambient temperature (heat stress). This study using Zebrafish as animal model like our previuous study because Zebrafish, have 70% identical genetic similarity to humans. In addition, Zebrafish have specific approval from the U.S. Food and Drug Administration for new drug discovery research. Heat stress negatively affects animal health through an increase in Reactive Oxygen Species (ROS), especially in the reproductive system because it causes a decrease in reproductive efficiency, such as follicular development, oocyte quality, and oocyte maturation. Antioxidant supplementation, namely green tea extract, is needed to reduce the negative effects of heat stress. The purpose of this study was to analyze the difference of 4 µl dose of green tea extract (Camellia sinensis) on the diameter, viability, and Germinal Vesicle Breakdown (GVBD) rate of Zebrafish oocytes at normal temperature (28℃) and with exposure to heat stress (32℃; 34℃). Zebrafish oocytes were collected and grouped into 2 (two) treatment groups including, non-heat stress group (28℃) and heat stress group (32℃; 34℃) with 6 repetitions.  Quantitative data were processed using SPSS software with Two Way ANOVA analysis.  The results of Two Way ANOVA showed that green tea extract supplementation had a positive effect on the diameter, viability, and GVBD of Zebrafish oocytes. This is indicated by the significance of the percentage of diameter (P=0.002), viability (P=0.003), and GVBD rate (P=0.000).
Case Report: ACUTE IRON TOXICITY IN SIX WEEKS OLD JUVENILE AFRICAN CATFISH (Clarias gariepinus) Bello, Umar; Usman, Mannir Dahiru; Musa, Usman
Veterinary Biomedical and Clinical Journal Vol. 7 No. 2 (2025): Vol. 7 No. 2 2025
Publisher : Faculty of Veterinary Medicine Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.VetBioClinJ.2025.007.02.5

Abstract

Acute iron toxicity is an underreported cause of mortality in Aquaculture despite iron being a common groundwater contaminant in parts of sub-Saharan Africa. This case describes a sudden mortality event in six-week-old juvenile Clarias gariepinus reared in Sokoto, northwestern Nigeria. Over 50% of the 38, 000 stocked juveniles died within three days after transfer to new farm. Water analysis revealed iron concentrations from 0.57 to 0.99 mg/L, exceeding the Nigerian Industrial Standard limit of 0.3 mg/L for aquaculture water. A parallel cohort from the same batch reared elsewhere remained unaffected, ruling out infectious causes. The findings confirm acute iron toxicity as the etiology and underscore the vulnerability of early juvenile catfish to elevated iron levels. This highlights the need for routine trace metal monitoring, effective borehole water treatment, and heightened diagnostic awareness to prevent catastrophic losses in aquaculture systems.
Co-Authors Budiono Gambari, Isiaka Amosa Hidayah, Aaliyah Nurul Ismaila, Abdullahi Abubakar Lonameo, Bonick Kartini Musa, Usman Tuska, Habib Syaiful Arif Usman, Mannir Dahiru