Rewrites with shares falling on earnings miss Aug 8 (Reuters) - Tyson Foods TSN.N shares fell 10% on Monday as the U.S. meat processor reported weaker-than-expected quarterly earnings and warned of supply constraints and reduced demand for high-priced meat. Tyson said it raised meat prices to offset surging inflation, including $145 million of higher costs for feed ingredients in the April to June quarter. Tyson has sought to improve performance in the chicken unit after struggling to meet demand to produce consistent results.