Tyson Foods Invests in Brazilian Poultry CompanyThe deal is part of Tyson's global growth strategy to give the manufacturer greater flexibility in serving key global markets. Tyson Buys Keystone Foodservice OperationThe acquisition expands Tyson's value-added protein capabilities and strengthens its global presence. Network of Executive Women Adjusts Board of Directors The Network of Executive Women has named a new chair and seven new members to its board of directors.