Efeito do consórcio de gramíneas com feijão-caupi na entressafra sobre a produção de bovinos de corte
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Data
2021-08-20
Autores
Mattos, Jenifer Santos de
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Universidade Federal de Mato Grosso
Resumo
Legumes use intercropped with grasses is advantageous mainly
due to the assimilation of atmospheric nitrogen carried out by the legumes, which
reduces the demand for nitrogen fertilizers, as well as increasing the nutritive
value of pasture. Therefore, in intercropped cultivation, legumes that are not
antagonistic to grasses must be selected, in order to compromise the system's
productivity. One possibility for use in pastures is the use of cowpea (Vigna
unguiculata) and, therefore this research aimed to identify whether cowpea offers
an increase in animal performance when intercropped with grasses in the off
season. Experiment was carried out in the municipality of Itiquira, Mato Grosso,
in a randomized block design, in a 4x2 factorial scheme. The treatments
consisted of four grasses cultivation (Urochloa ruziziensis cv. Kennedy, Urochloa
brizantha cv. Paiaguás, Urochloa brizantha cv. Piatã and Panicum maximum cv.
BRS Tamani) in two systems (monoculture and intercropping with cowpea cv.
BRS Tumucumaque) in the off-season of 2016 and 2017. Systems were sown in
succession to soybeans (March), and the animals entered the area in May.
Samples were collected in May, June and July to measure forage mass,
morphological, botany and chemical-bromatological composition. The
intercropping of grasses with cowpea provided an increase in stocking rate for
Tamani and Paiaguás grasses, compared to the monoculture system.
Furthermore, the intercropping with cowpea provided an increase in weight gain
per area in all grasses, except for Piatã grass. In addition, pastures with cowpea
had higher crude protein content, with the exception of Paiaguás. Also, all the
grasses tested can be used in the off-season in succession to soybean and the
intercropping of grasses with cowpea, in general, increases the performance of
beef cattle during the off-season.
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MATTOS, Jenifer Santos de. Efeito do consórcio de gramíneas com feijão-caupi na entressafra sobre a produção de bovinos de corte. 2021. 21 f. Dissertação (Mestrado em Zootecnia) - Universidade Federal de Mato Grosso, Campus Universitário de Rondonópolis, Instituto de Ciências Agrárias e Tecnológicas, Rondonópolis, 2021.