Características químicas e produtivas da gramínea coastcross (Cynodon Dactylon (L.) Pers) pastejada por novilhos no verão

Abstract

This experiment utilized four one-hectare paddocks, grazed by thirty-two crossbreed steers (345kg mean initial weight) with or without supplementation. Production estimation and forage sampling were taken every 28 days in four places of each paddock. Chemical analyses were conducted for green leaf blade (GLB), leaf sheath + green stem (LSGS) and dead material (DM) fractions. Variations were observed on participation of GLB, LSGS and DM fractions and in CP and NDF concentration. The forage mass showed negative correlation with CP and IVDDM. The crude protein partition showed most significant for GLB fraction B3; for LSGS and MM, fractions A and B2 were superior (p<0.05). The highest observed values for carbohydrate partition were on B2 fraction, but occurring more A + B1 fraction in GLB, B2 in LSGS and MM and C fraction in DM (p<0.05).