This work was realized in the Animal Research Unit "Senator Alvaro Adolpho" in the
Embrapa Eastern Amazon, in Belem, Para State, to evaluate the effect of four levels
of substitution (25%, 50%, 75% and 100%) of the Pueraria phaseoloides (Roxb.)
Benth leguminous, in the voluntary consumption and apparent digestibility of the dry
substance (MS), crude protein (PB), crude energy (EB), detergent neutral fiber (FDN)
and acid detergent fiber (FDA). The experiment was of 14 days of adaptation and
seven days of experimental period, using sixteen sheep’s, of ten months and 28 (±
2,44) average of kg, in a completely randomized experimental design, with four
treatments and four repetitions. The data had been analyzed by software SAS. The
substitution of the quicuio-da-Amazônia for the pueraria in the diet influenced the
voluntary consumption and the apparent digestibility of all the nutrients, being
described for quadratic function. A quadratic increase in the apparent consumptions
of the FDN was evidenced and FDA, however, with increase of the level of
leguminous in the diet, had been observed significant reductions in the FDN text
when the 75% level was supplied. The use of the Pueraria phaseoloides leguminous,
provides to greater availability of dry substance in the fodder plant and rise of the
nutritional value, mainly, protein in the diet, promoting increase of the animal
productivity. Levels of substitution of P. Phaseoloides, around 100%, make possible
greater consumption of the dry substance, organic substance, PB and EB, while that,
the 75% level allows to greater consumption of the fibroses fractions.
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