The document summarizes the recovery of cheese whey from dairy factories for use as animal feed. Currently, only 4% of whey is recovered from factories producing hard and white cheeses, with the remaining 96% discharged into sewer systems. The document proposes a pollution prevention approach where whey would be recovered from factories and used as feed for animals at local farms. A pilot study found that whey provides similar nutritional benefits as molasses for animal growth but with higher yield efficiency. The approach could generate revenue from byproduct recovery, reduce wastewater disposal costs for factories, and lower feed costs while increasing safety for farms.