02248naa a2200289 a 450000100080000000500110000800800410001902200140006002400550007410000200012924501310014926000090028052013740028965000180166365000120168165000210169365000120171465300220172670000200174870000220176870000230179070000210181370000200183470000180185470000220187277300640189421668772024-08-28       2024    bl uuuu     u00u1 u    #d  a1745-039X7 ahttps://doi.org/10.1080/1745039X.2024.23199362DOI1 aGOMES, F. de K.  aCarbohydrates and protein digestive traits in beef cattle grazing fertilised or mixed tropical pasture.h[electronic resource]  c2024  aThis study was performed to investigate the nitrogen (N) andcarbohydrate digestive traits of grazing heifers. The experimentwas carried out at the Federal University of Lavras. The treatmentswere a Marandu palisadegrass (Urochloa brizantha [Syn, Brachiariabrizantha] Stapf. A. Rich. cv. Marandu) monoculture fertilised with150 kg N/[ha ∙ year] (FP) or Marandu palisadegrass mixed pasturewith forage peanut (MP). The pastures were grazed by six rumen-cannulated zebu heifers. A double cross-over design was used infour periods. Nutritive value, intake and apparent digestibility offorage, ruminal traits and kinetics and N balance were evaluated.Apparent total-tract digestibility of dry matter (DM) and neutraldetergent fibre (NDF) were greater for FP than for MP. There wasno effect in apparent total-tract digestibility of N. The estimatedintestinal digestibility of nutrients was greater on MP than FP. Eventhough N intake and faecal N output were greater on MP than FP,there was no effect in urine N output. The N balance tended to begreater on MP than FP. The forage peanut, which contains con-densed tannins, decreased ruminal fibre degradation, apparentdigestibility and ruminal protein degradation, increased N flowfrom the rumen. Inclusion of forage peanut in the mixed pasturedecreased the ruminal fibre degradability but increased N retentionby the animals  aDigestibility  aLegumes  aNitrogen balance  aTannins  aDigestion inrumen1 aHOMEM, B. G. C.1 aGUIMARÃES, B. C.1 aDANES, M. de S. C.1 aBRODERICK, G. A.1 aALVES, B. J. R.1 aBODDEY, R. M.1 aCASAGRANDE, D. R.  tArchives onf Animal Nutritiongv. 78, n. 1, p. 60-77, 2024.