considerations include the effects on the animal eating the feed and on consumers eating the resulting animal product worker safety and other environmental aspects of using the feed as the production process for the enzymes used in animal feeds takes place under controlled conditions in closed fermentation tank installations and eliminates the modified dna from the final products these products do not pose any risk to the animal or the environment the enzyme phytase has particular benefits in feeding pigs and poultry including a significant reduction in the amount of phosphorus released to the environment