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All Journal Medicina E-Jurnal Medika Udayana Indonesia Medicus Veterinus Jurnal Medik Veteriner ISM (Intisari Sains Medis) : Jurnal Kedokteran Jurnal Kedokteran: Media Informasi Ilmu Kedokteran dan Kesehatan Journal of Health Sciences and Medicine Journal of Global Pharma Technology Journal of Clinical Microbiology and Infectious Diseases
Komang Januartha Putra Pinatih
Departemen Mikrobiologi, Fakultas Kedokteran, Universitas Udayana, Denpasar, Bali, Indonesia
Biochemistry, Genetics & Molecular Biology Health Professions Immunology & microbiology Medicine & Pharmacology Public Health Veterinary

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Identification and antibiotic susceptibility of Gram-positive bacteria exhibiting β-hemolysis isolated from traditional pig farms in Bali, Indonesia Suardana, I Wayan; Bire, Ienioliski L. O. Rohi; Pinatih, Komang Januartha Putra
Jurnal Medik Veteriner Vol. 9 No. 1 (2026): April
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmv.vol9.iss1.2026.1-15

Abstract

Pig farming in Bali plays a critical role from a One Health perspective, as zoonotic cases originating from pigs have been documented, including human infections caused by Gram-positive bacteria such as Streptococcus suis. Furthermore, farmers in affected areas often administer medications, including amoxicillin, chloramphenicol, and streptomycin, without adhering to appropriate dosages, treatment durations, or disease-specific indications. Considering the complexity of this issue, the identification of β-hemolytic Gram-positive bacteria isolated from traditional pig farms in Bali is warranted to address public health concerns. This study began with the cultivation of eight bacterial isolates obtained from the tonsils and nasal cavities of pigs on blood agar media. Subsequent analyses included Gram staining and catalase, oxidase, and salt tolerance testing. Molecular identification was performed through 16S rRNA gene analysis. Antibiotic susceptibility testing was conducted using the Kirby–Bauer disk diffusion method. The results indicated that all eight isolates were Gram-positive and exhibited β-hemolysis. Molecular identification revealed that six isolates were Enterococcus faecalis, one isolate was classified as Staphylococcus spp., and one isolate as E. casseliflavus. Antibiotic susceptibility testing demonstrated that all isolates remained sensitive to amoxicillin, chloramphenicol, and streptomycin. Nevertheless, the prudent use of antibiotics remains essential to prevent zoonotic transmission and the development of antimicrobial resistance.
Co-Authors Agus Eka Darwinata Agus Roy Rusly Hariantana Hamid Amy Yelly Bire, Ienioliski L. O. Rohi D. A. Widiasih Dhyana Ratmaja, I Gusti Agung Ngurah Dwi Lestari Dyah Ayu Widiasih Gede Wara Samsarga Samsarga I Dewa Ayu Rayna Nareswari Wikananda I Dewa Made Sukrama I G A Aristi Dhika Pranani I Gede Sathya Agastya I Gede Wikania Wira Wiguna I Gusti Agung Istri Gladys Elsyaningrat I Gusti Putu Hendra Sanjaya I Kadek Jaya Santika I Made Gustama Heryawan I Nyoman Arnatha I Putu Gede Septiawan Saputra I Wayan Suardana Ida Ayu Putu Putri Andari Ida Ayu Santhi Pertiwi Manuaba Ida Bagus Aditya Bhaskara Ida Bagus Putu Putrawan Ida Sri Iswari Kadek Adit Wiryadana Luh Putu Dea Sasmita Pralambari Made Agus Hendrayana Maharani, Ida Ayu Komang Ananta Mita Ekamelinda Nara Dhany, Henri Ni Luh Ranthi Kurniawathi Ni Made Adi Tarini Ni Made Ratih Purnama Dewi Ni Nengah Dwi Fatmawati Ni Nyoman Sri Budayanti Ni Putu Eka Umarista Apriliani Oktivia Chandra Mustika, Oktivia Chandra Putu Indri Widiani Rachmy Hamdiyati Rian Ka Praja Saraswati, I Gusti Ayu Agung Putri Indria Surya Putra, I Gusti Agung Utama Yosi Kusuma