PeerJ Author 335 Points Contributions by role Author 335 Contributions by subject area Veterinary Medicine Zoology Climate Change Biology Atmospheric Chemistry Agricultural Science Food Science and Technology Chen Zheng PeerJ Author Summary Agricultural Science Veterinary Medicine Zoology Past or current institution affiliations Gansu Agricultural University PeerJ Contributions Articles 3 June 30, 2021 Effects of mannan oligosaccharides on growth performance, nutrient digestibility, ruminal fermentation and hematological parameters in sheep Chen Zheng, Juwang Zhou, Yanqin Zeng, Ting Liu https://doi.org/10.7717/peerj.11631 PubMed 34249497 March 31, 2021 Research progress on the application of feed additives in ruminal methane emission reduction: a review Kang Sun, Huihui Liu, Huiyu Fan, Ting Liu, Chen Zheng https://doi.org/10.7717/peerj.11151 PubMed 33850664 January 28, 2021 Effects of dietary fennel (Foeniculum vulgare Mill.) seed powder supplementation on growth performance, nutrient digestibility, small intestinal morphology, and carcass traits of broilers Huihui Liu, Jinlu Li, Shuqin Lin, Ting Liu, Chen Zheng https://doi.org/10.7717/peerj.10308 PubMed 33575119