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Archivos de Zootecnia

On-line version ISSN 1885-4494Print version ISSN 0004-0592


HEIMBACH, N.S. et al. Residue from extraction of brown propolis in the diet to rumiants: in vitro digestibility and gas production. Arch. zootec. [online]. 2014, vol.63, n.242, pp.259-267. ISSN 1885-4494.

The objective of this work was to assess the effect of the different inclusion levels of residue from extraction of propolis in the ruminant diet, using the digestibility and gas production measures. Were evaluated five inclusion levels of brown propolis about the in vitro nutrient digestibility with 72 hours of the incubation (with and without pepsin, considered ruminal and total rumination, respectively), and in vitro gas production. Tifton hay (Cynodon) was utilized as substrate and the concentrate was made from the soybean meal and corn, with relation roughage:concentrate around 50:50, based on dry matter. Two ruminal inoculums (from cattle and sheep) were utilized. The treatments were distributed in completely randomized design, with inclusion of the four levels of residue from extraction of propolis (5,10,15 and 20 g/kg DM). The inclusion of residue from extraction of propolis had effect on in vitro ruminal digestibility for dry matter and neutral detergent fiber, and total digestibility in vitro had significative diference for dry matter digestibility, crude protein, neutral detergent fiber and acid detergent fiber. The best level of inclusion for total digestibility in vitro is 13.88 g of residue from extraction of propolis/kg DM. While for gas production, the best level in vitro of residue from extraction of propolis for cattle was 8.52 g/kg DM and for sheep was 5.53 g/kg DM.

Keywords : Aditive.

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