Hay Research Increases Protein and RFV by Robert Cain | Research | 0 comments Hay Research shows SEA-90 Application Increases Protein and RFV (Relative Feed Value) Over 50% with only one application. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website By using this form you agree with the storage and handling of your data by this website. Privacy Policy * Notify me of follow-up comments by email. Notify me of new posts by email.