Proposed Use of Adjusted Intake Based on Forage Particle Length for Calculation of Roughage Indexes

摘要: Abstract Effects of forage intake and particle length on chewing time were investigated. Two ratios to concentrate, 33:67 50:50, three lengths particles compared in two 3×3 Latin squares repeated a second year. Distribution was determined with an oscillating screen separator. Weighted mean lengths, .31, .43, .51cm, measured for the forages. Actual intakes dry matter fibrous constituents multiplied by obtain adjusted (kg.cm) length. Although there no differences matter, or neutral detergent fiber acid between adjustment revealed that total associated consumed forage. Total affected concentration rumen volatile fatty acids, pH, milk fat percentage concentrate. Roughage indexes based are reported. The quadratic equation described roughage index (Ŷ) Ŷ = 365.2−69.6X + 4.73X 2 .