美国人 The U. S. 内政部正在使用 GonaCon 对西奥多·罗斯福国家公园的野马母马进行绝育，引发了关于其长期影响的争论。 The U.S. Interior Department is using GonaCon to sterilize wild horse mares in Theodore Roosevelt National Park, sparking debate over its long-term effects.

美国人 The U. S. The U.S. 前北达科他州州长Doug Burgum领导的内政部正在使用GonaCon(一种导致长期不育的避孕手段)来管理Theodore Roosevelt国家公园的野马,在最近的围捕中注射了几乎所有育龄马。 Interior Department, led by former North Dakota Governor Doug Burgum, is using GonaCon—a contraceptive causing long-term infertility—to manage wild horses at Theodore Roosevelt National Park, injecting nearly all reproductive-age mares during recent roundups. 尽管倡导者对永久不育、胎儿存活率下降和遗传多样性减少表示关切,但官员仍坚持采用这种方法,对生态系统保护是有效的。 Despite concerns from advocates about permanent sterility, declining foal survival, and reduced genetic diversity, officials maintain the method is effective for ecosystem protection. 批评者敦促转而采用PZP,这是一个可逆的替代方案,但该机构继续支持GonaCon的长期工作,这引起了持续的伦理和生态问题。 Critics urge a shift to PZP, a reversible alternative, but the agency continues favoring GonaCon for its longer duration, raising ongoing ethical and ecological concerns.