1. College of Mechanical Engineering, Guangxi University, Nanning, China;
2. Key Laboratory of Guangxi Petrochemical Resource Processing and Process Intensification Technology, Nanning, China;
3. Guangxi Engineering Research Center for Comprehensive Utilization of Livestock and Poultry Breeding Waste, Nanning, China;
4. College of Animal Science and Technology, Guangxi University, Nanning, China