A chemical method for sexual sterilisation and libido suppression in male mammals is indicated to achieve the biological sterilisation of male mammals such as bovines, sheep, goats, equines, swine, dogs, cats and humans. The invention consists in a sterile aqueous solution containing an active sclerosing principle (lactic acid) and an enzyme (papain). The enzyme causes digestion of testicle tissue, intensifying the acid's necrosing effect and causing it to act faster and more efficiently. The association of these two active principles provokes an acute inflammatory reaction with a quick resolution characterised by fibrosing of the organ. This effect leads to the loss of the gametogenic and androgenic functions, and causes sterility and libido suppression, respectively. The biological sterilisation process can be easily carried out and does not require additional treatments, requiring less handling of the animals, with less stress and increased weight gain. The process is not painful either during or after administration, owing to the lesion of the testicle nerve endings at the moment of application, and to the fact that the greatest number of sensitive structures is located in the scrotal sac. The meat of thus treated cattle does not require for consumption a waiting period between application and slaughter, since the biological active principles can be easily metabolised by the animal organism. This method has already been successfully used in more than 3,000 animals, and is the only method available today in which naturally available biological active principles are used.수컷 포유동물에서 리비도 억제 및 성적 불임화를 위한 화학 방법은 수컷 포유동물, 예컨대 소, 양, 염소, 말, 돼지, 개, 고양이 및 인간의 생물학적 불임화를 달성하는 것으로 나타내어진다. 본 발명은, 활성 경화성 요인 (락트산) 및 효소 (파파인) 를 함유하는 불임 수용액으로 이루어진다. 이들 효소는 고환 조직의 소화를 야기하고, 산의 괴사 효과를 강화하고 보다 신속하고 보다 효율적으로 작용하게 한다. 이들 2 개의 활성 요인의 연계는 기관의 섬유화를 특징으로 하는 신속한 분해와 급성 염증성 반응을 일으킨다. 이러한 효과는 배우자발생 및 안드로겐의 기능의 손실을 야기하고, 각각 불임화 및 리비도 억제를 야기한다. 생물학적 불임화 과정은 용이하게 수행될 수 있으며 추
