absence of breathing

an abnormal heart rhythm

any mark on a radiograph which decreases the quality

blood vessel carrying blood away from the heart

the concentration of a nutrient in the food as it is fed to the animal, which includes the water content of the food

excess fluid in the abdominal cavity

freedom from infectious material

the complete absence of bacteria, viruses or fungi that could cause disease. Asepsis is the ideal situation for the performance of surgical or other invasive procedures, and is achieved by sterilisation techniques

reproduction which involves only one parent and produces offspring which are identical to the parent

the residue left after combustion of the food - generally the mineral content