Carbohydrate and nitrogen fractions and ruminal kinetics of dry matter and neutral detergent fiber of Tifton 85 grass (Cynodon spp.) silages
DOI:
https://doi.org/10.5433/1679-0359.2007v28n3p521Keywords:
Degradation, Forages, Nutrition, Ruminants.Abstract
It was determined the nitrogen and carbohydrate fractions and dry matter (DM), and neutral detergent fiber (NDF) degradation kinetics in five silages prepared with Tifton 85 grass forage: exclusive Tifton 85, Tifton 85 silage added of corn industrial residue, Tifton 85 silage added of corn meal, Tifton 85 silage inoculated with lactobacillus and Tifton 85 silage pré-dry. The values of total carbohydrates varied from 66.32 to 73.12%, the B2 fraction varied from 35.09 a 52.27 %; and non-structural carbohydrates varied from 8.61 to 38.03%. The values obtained for the protein fractions varied from 68.08 to 82.70% for A fraction; from 1.14 to 2.97% for the B1 fraction; from 7.46 to 13.71% for the B2 fraction; from 6.09 to 12.60% for the B3 fraction; and from 0.36 to 6.71% for the C fraction. The values of effective degradability of dry matter varied from 46.93 to 63.49% for the DM, and from 33.47 to 37.84% for the NDF. The corn industrial residue and corn meal used for silage production favored the effective degradation of DM and NDF, and offered highest energy readiness for ruminal microorganisms.Downloads
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