Insights into high-altitude adaptation and meat quality regulation by gastrointestinal metabolites in Tibetan and black pigs - Bai, Xue; Huang, Zhiying; Tan, Helin; Gu, Yiren; Wang, Xun; Jin, Long; Shang, Peng; Long, Keren; Li, Diyan; Li, Mingzhou (Frontiers in Veterinary Science, 2025)