SciELO - Scientific Electronic Library Online

 
vol.35 issue4Quantitative characteristics of the carcass of Morada Nova lambs fed different dietary ratios of forage and concentrateFeeding vegetable oil to lactating goats: milk production and composition and milk fatty acids profile author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista Brasileira de Zootecnia

Print version ISSN 1516-3598On-line version ISSN 1806-9290

Abstract

MAIA, Fábio José et al. Feeding vegetable oil to lactating goats: nutrient digestibility and ruminal and blood metabolism. R. Bras. Zootec. [online]. 2006, vol.35, n.4, pp.1496-1503. ISSN 1516-3598.  http://dx.doi.org/10.1590/S1516-35982006000500032.

The objectives of this trial were to evaluate the effect of dietary oil supplementation on intake, apparent total tract digestibility of nutrients, and ruminal metabolism in lactating Saanen goats. Four ruminally cannulated multiparous goats averaging 54±1.02 kg BW and 80 days in milk were used. Goats were fed a control diet (no oil supplementation) or diets supplemented with one of the following oil sources: canola, rice or soybean. A 4 x 4 Latin square design was used and data were analyzed using the MIXED procedure of SAS (2001) with means compared through orthogonal contrasts at 5% of significance. Dietary oil supplementation reduced apparent total tract digestibility of both neutral detergent fiber and nonstructural carbohydrates but contents of TDN did not differ among diets. Oil supplementation did not change the concentration of ruminal ammonia N and plasma urea N but increased ruminal pH and decreased milk urea nitrogen concentration (MUN). The inclusion of 5.1% of vegetable oils in the diet of lactating goat did not significantly affect nutrient digestibility and ruminal fermentation parameters.

Keywords : rice oil; rapeseed oil; soybean oil; ruminal pH.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License