Researchers found wildfire smoke and fine particulate matter exposure during spermatogenesis increased sperm discard odds by 4% per additional smoke day in bulls, with Angus breeds showing 31% higher vulnerability to PM2.5. The study establishes a baseline for cattle reproductive health risks and calls for mitigation strategies for veterinarians and cattlemen.
Source: academic oup. Original: https://academic.oup.com/jas/advance-article/doi/10.1093/jas/skag110/8651340
