Seasonal testicular regression in Yangzhou geese: Transcriptomic evidence for an immune–reproductive trade-off during the transition from peak to shutdown egg production - Yuyan Feng; Haiyue Mei; Xiaojing Chen; Binbin Guo; Zichun Dai; Mingming Lei; Huanxi Zhu; Wenya Lan; Jie Liu (Theriogenology, 2026)