Bovine: If the thing is this time period on pubmed, it implies that the product incorporates beef-derived collagen. Bovine collagen, as documented in PubMed, is high in the two Forms I and II collagens. There’s also rising curiosity within the metabolic effects of dietary collagens, with various content on PubMed https://www.onehealth.sg/2021/12/06/liveon-the-ultimate-age-reversing-beverage/