Effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep

Effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep

7 pages, 4 tables.-- Available online 21 Jan 2009.

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Bibliographic Details
Main Authors: Toral, Pablo G., Belenguer, Álvaro, Frutos, Pilar, Hervás, Gonzalo
Format: artículo biblioteca
Language:English
Published: Elsevier 2009
Subjects:Lipid, Rumen degradation, Linoleic acid, ω-3 polyunsaturated fatty acids,
Online Access:http://hdl.handle.net/10261/11167
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spelling dig-igm-es-10261-111672021-03-18T16:13:20Z Effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep Toral, Pablo G. Belenguer, Álvaro Frutos, Pilar Hervás, Gonzalo Lipid Rumen degradation Linoleic acid ω-3 polyunsaturated fatty acids 7 pages, 4 tables.-- Available online 21 Jan 2009. This study was conducted to test the hypothesis that the supplementation of a highconcentrate diet with lipids, reportedly a good strategy for improving the nutritional value of ruminant-derived products, may not necessarily be associated with detrimental effects on ruminal fermentation in sheep. Four ruminally cannulated adult ewes were fed a high-concentrate diet, with no oil (Control diet), for a 14-day adaptation period. Afterwards, they were fed the same basal diet but supplemented with sunflower oil [20 g/kg fresh matter (FM)] and fish oil (10 g/kg FM) (SOFO diet) for a further 11 days, to investigate the impact of the addition of oils on the ruminal fermentation of the diet. On days 0 (Control), 3 and 10 of the experimental period rumen fluid was sampled at 0, 1.5, 3, 6 and 9 h after the morning feeding, for analysis of pH, and ammonia, lactate and total volatile fatty acid (VFA) concentrations. Alfalfa hay was incubated in situ, using the nylon bag technique, for 12 and 24 h to examine the effect of oil supplementation on ruminal disappearance of dry matter (DM), crude protein (CP) and neutral detergent fibre (NDF). On days 0 and 11, rumen fluid was collected just before the morning feeding and used to incubate alfalfa hay and the Control and SOFO diets by means of the in vitro gas production technique. The mean concentrations of acetate (87.8 vs 73.7 mmol/L) and butyrate (21.2 vs 17.7 mmol/L) were reduced by oil supplementation (P< 0.05) and the total VFA showed a tendency (P= 0.098) to be lower with the SOFO diet (139.0 vs 122.1 mmol/L). However, none of the other in vivo ruminal fermentation parameters were affected by the treatment (P> 0.10). The oil supplementation affected neither in situ rumen disappearance of DM, CP and NDF of alfalfa hay, nor rates of gas production (P> 0.10). On the other hand, a little, but significant reduction in cumulative gas production was observed when the experimental diets were incubated with rumen fluid derived from animals fed the oil-rich diet (P< 0.05). 3 Overall, the results suggest that the supplementation of high-concentrate diets with sunflower oil (20 g/kg FM) plus fish oil (10 g/kg FM) had little effect on ruminal fermentation and therefore its use to improve the nutritional value of ruminant-derived products cannot be precluded. This work was supported by the Spanish Ministry of Science and Innovation (Project AGL2008-04805-C02-02) and the Council of Castile and León (Project CSI01B08). Peer reviewed 2009-03-03T09:21:41Z 2009-03-03T09:21:41Z 2009 artículo http://purl.org/coar/resource_type/c_6501 Small Ruminant Research 81(2-3): 119-125 (2009) 0921-4488 http://hdl.handle.net/10261/11167 10.1016/j.smallrumres.2008.12.009 en http://dx.doi.org/10.1016/j.smallrumres.2008.12.009 open 135879 bytes application/pdf Elsevier
institution IGM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-igm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IGM España
language English
topic Lipid
Rumen degradation
Linoleic acid
ω-3 polyunsaturated fatty acids
Lipid
Rumen degradation
Linoleic acid
ω-3 polyunsaturated fatty acids
spellingShingle Lipid
Rumen degradation
Linoleic acid
ω-3 polyunsaturated fatty acids
Lipid
Rumen degradation
Linoleic acid
ω-3 polyunsaturated fatty acids
Toral, Pablo G.
Belenguer, Álvaro
Frutos, Pilar
Hervás, Gonzalo
Effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep
description 7 pages, 4 tables.-- Available online 21 Jan 2009.
format artículo
topic_facet Lipid
Rumen degradation
Linoleic acid
ω-3 polyunsaturated fatty acids
author Toral, Pablo G.
Belenguer, Álvaro
Frutos, Pilar
Hervás, Gonzalo
author_facet Toral, Pablo G.
Belenguer, Álvaro
Frutos, Pilar
Hervás, Gonzalo
author_sort Toral, Pablo G.
title Effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep
title_short Effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep
title_full Effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep
title_fullStr Effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep
title_full_unstemmed Effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep
title_sort effect of the supplementation of a high-concentrate diet with sunflower and fish oils on ruminal fermentation in sheep
publisher Elsevier
publishDate 2009
url http://hdl.handle.net/10261/11167
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AT frutospilar effectofthesupplementationofahighconcentratedietwithsunflowerandfishoilsonruminalfermentationinsheep
AT hervasgonzalo effectofthesupplementationofahighconcentratedietwithsunflowerandfishoilsonruminalfermentationinsheep
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