1. Embryo Technology and Stem Cell Research Center and School of Biotechnology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand.
2. Stem Cell and Developmental Biology, Genome Institute of Singapore, Singapore 138672, Singapore.
3. Khao Kheow Open Zoo, Chonburi 20110, Thailand.
4. Semen Production Section, The Dairy Farming Promotion Organization of Thailand (D.P.O.), Saraburi 18180, Thailand.
5. Institute of Dairy Research and Development, The Dairy Farming Promotion Organization of Thailand (D.P.O.), Saraburi 18180, Thailand.