Semen collection in Rusa timorensis under general anaesthesia by using Ketamine-Xylazine: clinical study by Wan Jaafar, Wan Nor Fitri, Haron, Abd Wahid, Abdullah Jesse, Faez Firdaus, Zainal Abidin, Siti Aimi Sarah, Mohd Lila, Mohd Azmi, Rashid, Muhammad Azrolharith, Kamarudin, Zubaidah, Yawah, Donny, Zulhizri, Ahmad, Che Amat, Azlan, Yap, Keng Chee