Final answer:
Fasting before a biochemical assay is not required for birds, camelids, horses, and ruminants.
Step-by-step explanation:
Fasting before a biochemical assay is not required for birds, camelids, horses, and ruminants. These animals have different digestive systems that allow them to process food efficiently without the need for fasting. For example, birds have a four-chambered stomach, while ruminants like goats and cows have a four-stomach system that includes the rumen, reticulum, omasum, and abomasum.