Analisis Mobilisasi Sel T CD4+ dan CD8+ pada Timus Ayam Pedaging Pasca Infeksi Salmonella typhimurium dan Pemberian Simplisia Polyscias obtusa
Abstract
Penggunaan antibiotik dalam pakan sebagai perlindungan bagi ternak dari penyakit memiliki dampak negatif yakni adanya kandungan residu sehingga diperlukan adanya bahan substitusi antibiotik. Simplisia daun kedondong laut (Polyscias obtusa) diduga mengandung senyawa flavonoid yang diduga dapat berperan sebagai agen imunomodulator dalam sistem imun seluler. Tujuan dari penelitian ini adalah untuk mengetahui peran kandungan simplisia daun Polyscias obtusa dalam pakan ayam sebagai imunomodulator pada ayam yang telah diinfeksi bakteri Salmonella typhimurium, ditinjau dari profil ekspresi CD4+, CD8+ dan B220+ yang dianalisis melalui Flowcytometri. Tahapan penelitian meliputi uji konfirmasi bakteri S.typhimurium, persiapan kultur bakteri dan simplisia daun P. obtusa, infeksi bakteri secara oral 500 µl, pembuatan pakan konversi dengan perlakuan simplisia dosis 1 (0.08%), dosis 2 (0.16%) dan dosis 3 (0.26%), isolasi organ timus dan sel T-limfosit dan analisis flowcytometri. Hasil yang diperoleh menunjukan bahwa jumlah relatif CD4+, CD8+ dan B220+ mengalami peningkatan pada perlakuan pakan pabrik+infeksi bakteri Salmonella dan perlakuan penambahan simplisia dosis 2 (0.16%) dengan hasil yang berbeda nyata berdasarkan waktu pemberian pada jumlah relatif sel CD8+. Hal ini membuktikan bahwa simplisia daun P. obtusa memiliki kemampuan dalam memaksimalkan fungsi sistem imun.
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