Corporate Social Responsibility Report
The animal feed can affect a lot of different social and environmental factors. It contributes to the safety and quality of food products, the productivity and welfare of the animals, and the conservation (or disruption) of the environment. As such it is widely relevant to a company's reporting transparency.
Using search terms like "animal feed" or "animal food" go through the company's CSR report and establish what the main component of the animal feed is.
If a more detailed composition of feed is reported on, please add this information as a comment to the metric value.