[1]Key Laboratory for Agro-Ecological Processes in Subtropical Region;
National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production;
Institute of Subtropical Agriculture;
Chinese Academy of Sciences;
Changsha 410125;
Hunan;
China;
[2]University of the Chinese Academy of Sciences;
Beijing 100049;
China;
[3]College of Veterinary Science and Medicine;
Central Luzon State University;
Science City of Mu?oz;
3120 Nueva Ecija;
Philippines;
[4]College of Animal Science and Technology;
Hunan Agricultural University;
Changsha 410128;
People’s Republic of China;
[1]Key Laboratory for Agro-Ecological Processes in Subtropical Region;
National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production;
Institute of Subtropical Agriculture;
Chinese Academy of Sciences;
Changsha 410125;
Hunan;
China;
[5]Agriculture and Agri-Food Canada;
Lethbridge Research and Development Centre;
Lethbridge;
Alberta T1J 4B1;
Canada;
[1]Key Laboratory for Agro-Ecological Processes in Subtropical Region;
National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production;
Institute of Subtropical Agriculture;
Chinese Academy of Sciences;
Changsha 410125;
Hunan;
China;
[2]University of the Chinese Academy of Sciences;
Beijing 100049;
China;
[1]Key Laboratory for Agro-Ecological Processes in Subtropical Region;
National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production;
Institute of Subtropical Agriculture;
Chinese Academy of Sciences;
Changsha 410125;
Hunan;
China;
[4]College of Animal Science and Technology;
Hunan Agricultural University;
Changsha 410128;
People’s Republic of China;
[1]Key Laboratory for Agro-Ecological Processes in Subtropical Region;
National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production;
Institute of Subtropical Agriculture;
Chinese Academy of Sciences;
Changsha 410125;
Hunan;
China;
[4]College of Animal Science and Technology;
Hunan Agricultural University;
Changsha 410128;
People’s Republic of China;
[6]International livestock Research Institute;
POB 30709;
Nairobi 00100;
Kenya.;
[1]Key Laboratory for Agro-Ecological Processes in Subtropical Region;
National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production;
Institute of Subtropical Agriculture;
Chinese Academy of Sciences;
Changsha 410125;
Hunan;
China;
Dissolved hydrogen; Methane; Nitrate; Oil; Rumen fermentation; Urea;