Fontes de carboidratos e ionóforo em dietas contendo óleo vegetal para ovinos: Digestibilidade, balanço de nitrogênio e fluxo portal de nutrientes

Translated title of the contribution: Carbohydrate sources and ionophore in sheep diets with vegetal oil: Digestibility, nitrogen balance and portal flux of nutrients

Gisele Fernanda Mouro, Antonio Ferriani Branco, David Lee Harmon, Fabio José Maia, Sabrina Marcantonio Coneglian, Tathiane Fernanda Minela Ribeiro

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The objectives of this trial were to evaluate the effects of two carbohydrate sources (soybean hulls and corn grain) with and without monensin on digestibility, nitrogen balance and portal nutrient flux in sheep fed high vegetable oil diets. Four Corriedale wethers averaging 54 kg of body weight and fitted with catheters in the mesenteric and portal veins and also in the mesenteric artery were used. Digestibility and nitrogen balance were determined using total collection of feces and urine. Net nutrient flux was calculated using the Fick principle. Intake, fecal excretion, digestion and digestibility of dry matter (DM), organic matter (OM) and ether extract (EE) were not affected by treatments. However, intake, digestion and digestibility of neutral detergent fiber (NDF) were higher when animals were fed soybean hulls (757.0 g/d, 531.1 g/d and 70.2%) rather than corn grain (392.3, 199.9 g/d and 51.0%). Conversely, intake, digestion and digestibility of nonfiber carbohydrates (NFC) as well as TDN content were greater on corn (474.6 g/d, 416.8 g/d, 87.8%, 80.2%) than on soybean hulls diets (148.0 g/d, 97.8 g/d and 66.1%, 76.7%). There was no effect of monensin on nutrient digestibility and nitrogen balance. Fecal excretion of protein was lower and protein digestibility was higher for corn diets. Alpha-amino-nitrogen concentration in arterial and portal plasma was lower for diets supplemented with monensin (3.161 and 2.922 mM) compared to non-supplemented monsesin diets (3.530 and 3.218 mM), respectively. Portal concentration (0.419 vs. 0.516 mM), venousarterial difference (0.230 vs. 0.317 mM), and portal flux (26.119 vs. 37.041 mM/h) of ammonia were all lower on corn diets.

Translated title of the contributionCarbohydrate sources and ionophore in sheep diets with vegetal oil: Digestibility, nitrogen balance and portal flux of nutrients
Original languagePortuguese
Pages (from-to)2144-2153
Number of pages10
JournalRevista Brasileira de Zootecnia
Volume35
Issue number5
DOIs
StatePublished - 2006

Keywords

  • Corn
  • Digestibility
  • Monensin
  • Nitrogen balance
  • Portal flow
  • Soybean hulls

ASJC Scopus subject areas

  • Animal Science and Zoology

Fingerprint

Dive into the research topics of 'Carbohydrate sources and ionophore in sheep diets with vegetal oil: Digestibility, nitrogen balance and portal flux of nutrients'. Together they form a unique fingerprint.

Cite this