Topics: Animal Reproduction Physiology, digestive system, Carbohydrates, fiber, protein, fats, vitamins, Nerve Regulators, hormone regulators, reproductive system, reproduction, male reproductive anatomy, lactation, nervous system, Glial Cells, muscular system, smooth muscle, cardiac muscle, circulatory system, Pulmonary circulation, heart, systemic circulation, Open circulatory system, artificial insemination, Electro-ejaculation, semen preservation, gametogenesis, fertilization pregnancy, Oestrous cycle, oogenesis, Salmonellosis, Infectious Bovine Rhinotracheitis