1 Preseed maintains this alkalinity while other vaginal lubricants tend to have pH values below 7.0 and as low as 3.5 (very acidic and deadly to sperm.  Osmolality Ã¢â¬â Semen has a specific particle concentration that keeps sperm motile and healthy.
Causes of instantaneous or sudden death. Instantaneous or sudden death may result from dysfunction/abnormalities of the heart and its vessels, noncardiac vessels, pulmonary system, and central nervous system (CNS).
Actinobacillus pleuropneumonia (APP) and Actinobacillus suis (AS) are bacterial infections of the lungs that cause sudden death in all ages of swine. Both organisms can cause numerous deaths at a single visit. With APP, it is common to see pigs that have recently died with blood coming from the nose.n general, sudden death in finishing pigs can be divided into enteric (gut) conditions, respiratory (lung) infections and individual pig events. Enteric conditions would include ileitis, hemorrhagic bowel syndrome (HBS), twisted gut and stomach ulcers.