Fat digestibility is species dependent (lower for poultry than for pigs), age dependent (lower for young animals) and strongly influenced by gut health (dysbacteriosis, mycotoxins etc).
Adding a feed or oil ingredient supplies the animal with essential fatty acids, needed for production and growth. But the digestibility of the fatty acids can vary between animal species and age groups. The effectiveness of including a fat or oil also depends on the total feed formulation. In this article we explain what nutritionists should consider. In the past feed grade animal fat was derived as a slaughter by-product as well as from dead (recycled) animals. Nowadays in the EU (category 3)
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