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vol.30 issue1Estimation of solid transit kinetics parameters in cattle under grazing by different sample seriesIn vitro disappearance of dry matter, nitrogen and acid detergent fiber of diets containing cottonseed meal, urea or starea author indexsubject indexarticles search
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Revista Brasileira de Zootecnia

On-line version ISSN 1806-9290


EZEQUIEL, Jane Maria Bertocco et al. Apparent digestibility of energy and fiber of sheep diets containing urea, starea or cottonseed meal. Rev. Bras. Zootec. [online]. 2001, vol.30, n.1, pp.231-235. ISSN 1806-9290.

This research was conducted to evaluate the energy and the fiber digestibility of diets containing urea, starea and cottonseed meal as nitrogen sources and corn silage as forage. Twenty-four lambs averaging 11 months old and initial 31 kg LW and total feces collection method were used. Dry matter intake was 64.1, 68.8 and 71.4 g /kg PV.75 /day and the energy, NDF and CF digestibilities were 63.0, 67.7 and 64.4%, 39.6, 55.7 and 50.0%, 47.0, 49.3 and 53.4%, for the diets with urea, starea and cottonseed meal, respectively. The average weights gain were 278.5, 348.0 and 293.7 g/anim./day, in the same above sequence. The use of starea would be more adequate in relation to urea and cottonseed meal in diets with corn silage as forage for lambs.

Keywords : apparent digestibility; cottonseed meal; energy; NDF; starea; urea.

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