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Mengapa Ayam Jantan Berkokok di Pagi Hari, Ini Jawabannya Ayam jantan sesungguhnya memang berkokok karena memiliki kepekaan waktu dalam tubuhnya atau hanya respon untuk menstimulasi rangsangan eksternalnya?
Studi sebelumnya telah menunjukkan bahwa segudang perilaku hewan pada umumnya didorong oleh jam internal dalam tubuhnya yang mengenali waktu. Misalkan pada malam hari, beberapa hewan menyelupkan diri mereka di rawa atau kubangan air, bahkan ikan-ikan di dalam gua menggunakan jam sirkadian untuk memberitahu waktu.
"Suara ayam berkokok merupakan simbol atau pertanda bahwa waktu fajar telah tiba. Banyak orang di berbagai Negara percaya itu, namun penelitian ini belum cukup jelas membuktikan bahwa ayam jantan sesungguhnya memang berkokok karena memiliki kepekaan waktu dalam tubuhnya atau hanya respon untuk menstimulasi rangsangan eksternalnya" kata Takashi Yoshimura dari Nagoya University.
Karena rangsangan sepanjang hari, seperti menyalanya lampu mobil, akan memicu ayam jantan untuk berkokok setiap saat. Hal ini juga diduga menjadi alasan mengapa ayam jantan terus berkokok karena adanya cahaya yang mengarah pada ayam jantan.
Untuk mengetahuinya, Yoshimura dan rekan-rekan melakukan penelitian dan menempatkan 40 ayam jantan dalam pengaturan dengan cahaya konstan, kemudian direkam ketika mereka berkokok.
Benar saja, nyatanya ayam berkokok tidak hanya saat fajar. Ayam jantan juga berkokok karena merespon cahaya dan sebagai cara berkomunikasi sesama ayam, tetapi perilaku berkokok mereka memang jauh lebih kuat saat fajar. Sebagai tindak lanjut, tim berharap untuk menentukan dasar-dasar genetik dari suara binatang lainnya.Langka, Seekor Panda di Kebun Binatang Jepang Diduga Hamil Fatwa Dikriminalisasi, MUI Seperti Akan Dilenyapkan? Pasar Senen Kebakaran, Puluhan Mobil Pemadam Dikerahkan Soal Tudingan 'Palu Arit', Rizieq Masih Berstatus Saksi Terlapor Timses Anies-Sandi Tuding Hasil Survei Tak Bertanggung Jawab 'Rolling Thunder' Sebuah Penghormatan Kepada Veteran Perang Obat Rindu Penikmat Jazz di Perhelatan Ke-13 Java Jazz Festival Ini Kesiapan Pengamanan Aksi 212 di DPR Jangan Menyalahkan, Ini Kata Mereka Soal Musibah Banjir Jakarta Pernah Dihancurkan Taliban, Resor Ski Ini Kembali Menggeliat Trump Jadi 'Hina' Boneka Tradisional Jepang Sambut 'Girls Day'