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Boletín Científico. Centro de Museos. Museo de Historia Natural

Print version ISSN 0123-3068

Abstract

CASTANEDA-SERRANO, Román David; PINEROS-VARON, Roberto  and  VELEZ-GIRALDO, Alejandra. FOLIAGE OF TROPICAL ARBOREAL SPECIES IN FEEDING OVINES (Ovis aries): INTAKE, DIGESTIBILITY AND BALANCE NITROGEN. Bol. Cient. Mus. Hist. Nat. Univ. Caldas [online]. 2018, vol.22, n.1, pp.58-68. ISSN 0123-3068.  http://dx.doi.org/10.17151/bccm.2018.22.1.4.

Objective:

To determine the eff ects of supplementation with three tropical arboreal species (Guazuma ulmifolia, Gliricidia sepium y Tithonia diversifolia) on intake, in vivo and in vitro digestibility in hair sheep.

Methodology:

The experiment was carried out in “Las Brisas” farm of Universidad del Tolima, Colombia. Twelve hair sheep, with an average weight of 22.2±2.5 kg, received four treatments in a 4×4 Latin square design with three sheep per experimental unit were used. The treatments consisted of: T1 = 100% D. aristatum; T2 = 50% D. aristatum, 25% Guazuma ulmifolia and 25% rice bran; T3 = 50% D. aristatum, 25% Gliricidia sepium and 25% rice bran; and T4 = 50% D. aristatum, 25% Tithonia diversifolia, and 25% rice bran. To determine the intake and digestibility of nutrients, the method of total collection of feces was used. It was observed that the intake and digestibility of dry matter, organic matter, crude protein, fraction of B3 of the protein and fi ber in neutral detergent, increased in relation to the control group in the diets containing tree foliage (p<0,0001).

Main results:

There were no differences for the dry matter intake (p> 0.05) between the treatments containing tropical arboreal species G. ulmifolia (T2), G. sepium (T3) and T. diversifolia (T4). However, diff erences were observed between all treatments (p <0.05) for nutrients digestibility.

Conclusion:

The supplementation of hair sheep with foliage of tropical arboreal species is an interesting alternative to improve the intake and digestibility of diets which can contribute to the improvement of the productive indicators.

Keywords : hair sheep; silvopastoral systems; small ruminants; tropical dry forest.

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