Fertility studies for the benefit of animals and human beings: Development of improved sterilization and contraceptive methods

Investigations into the basic mechanisms of reproduction and the causes of infertility have resulted in the generation of methods for the manipulation of reproduction in mammals. This paper emphasizes studies on mammalian gametes and their roles in the fertilization process. One of the studies is on the development and maturation of spermatozoa in the male reproductive tract. A study examined the changes in spermatozoa in the female reproductive tract while another focused on the development and ovulation of eggs in the mammalian ovary. Another study was conducted to investigate the general mechanisms of mammalian fertilization. The causes of infertility the methods for treatment of infertility and improvement of reproductive performance were likewise investigated. In addition research into population control was undertaken by which new methods of contraception would be studied. In relation studies were carried out emphasizing the immunologic methods for regulation of fertility. Lastly the paper presents a specific example of how the research targeted for human welfare can potentially have a significant impact on animal welfare.