Crude protein content in Urochloa cultivars (Syn. Brachiaria) in exclusive pasture system or consorciated with Macrotyloma axillare cv. Guatá
DOI:
https://doi.org/10.18406/2316-1817v11n220191264Keywords:
Biological nitrogen. Forage. Forage quality. Leguminous.Abstract
The objective of this study was to evaluate the crude protein content of Urochloa spp.
cultivars (U. brizantha cv Marandu and U. decunbens cv. Basilisk), within a consortium system
with Macrotyloma axillare cv Guatá. The experimental design was a completely randomized design,
with four replications, in a factorial scheme (2 x 2), at which two types of grass (U. decumbens
and U. brizantha) and two pasture types were studied (intercropped or exclusively fertilized with 60
kg of nitrogen/ha) with repeated measures in time (samplings at two seasons of the year: February
(summer) and August (winter)). Subsequently, samples were collected from a 2 m long PVC bar at
four points in each picket, and the forage cut close to the ground, with costal mowing coupled with
0.5 m length hedge trimmer, each sample of 0.5 x 2.0 m, totalizing 1m2. The sampled material was
identified, weighed and sent for analysis of crude protein to assess the contribution of leguminous
in grass protein content. No significant differences were found when the type of grass versus type of
pasture interaction for the crude protein variable was met; however, significant differences were found
when evaluating the type of grass versus season interaction, at which the highest levels were found
within the month of February (summer), the same occurring for the interaction type of pasture versus
season of the year. It was concluded there were increases in crude protein content for U. decumbens
cv. Basilisk and U. brizantha cv. Marandu when in consortium with M. axillare cv. Guatá in the
summer season.
Keywords: Biological nitrogen. Forage. Forage quality. Leguminous.
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