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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 Guata. 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. Guata in the summer season. Keywords : Biological nitrogen. Forage. Forage quality. Leguminous.

Crude protein content in Urochloa cultivars (Syn. Brachiaria) in exclusive pasture system or consorciated with Macrotyloma axillare cv. Guatá