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dc.contributor.author
Girard, Marion
dc.contributor.author
Dohme-Meier, Frigga
dc.contributor.author
Wechsler, Daniel
dc.contributor.author
Goy, Daniel
dc.contributor.author
Kreuzer, Michael
dc.contributor.author
Bee, Giuseppe
dc.date.accessioned
2019-11-28T15:12:17Z
dc.date.available
2017-06-11T21:10:18Z
dc.date.available
2019-11-28T15:12:17Z
dc.date.issued
2016-01
dc.identifier.issn
0022-0302
dc.identifier.issn
1525-3198
dc.identifier.other
10.3168/jds.2015-9952
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/106885
dc.identifier.doi
10.3929/ethz-b-000106885
dc.description.abstract
Condensed tannins (CT) may affect ruminal biohydrogenation of dietary polyunsaturated fatty acids. A feeding experiment was conducted with 24 Holstein cows to evaluate whether diets containing CT from different forage legumes can increase polyunsaturated fatty acids, especially n-3 fatty acid content in milk and cheese, without affecting negatively their physicochemical and sensorial properties. Cows were assigned to 4 treatment groups (n = 6) for 52 d, divided into 2 periods: a control period (CoP) and an experimental period (ExP). During the CoP, cows received a basal diet composed of hay, corn silage, ExtruLin (Trinova Handel & Marketing AG, Wangen, Switzerland), concentrate, and alfalfa (AF) in a ratio of 45:25:5:7:18. In the ExP, in 3 of the 4 groups AF was replaced by either sainfoin (SF; 19% CT in dry matter) or 1 of 2 cultivars of birdsfoot trefoil [Polom (BP), 3% CT; Bull (BB), 5% CT]. At the end of each period, milk was collected on 3 consecutive days and analyzed for milk gross composition and fatty acid profile and was processed to Gruyère-type cheese. A trained panel assessed the sensory quality of raw milk and cheese using discriminative and descriptive tests. This experimental design consisting of AF in both the CoP and ExP allowed us to quantify effects due to lactation stage and experimental diets. In both the CoP and ExP, dry matter intake and milk yield did not differ among treatment groups. From the CoP to the ExP, milk urea content was reduced by 23% with SF, remained unchanged with BP, and tended to increase with AF and BB. The odor of the raw BB milk was judged to be different from AF milk. With SF, switching from the CoP to the ExP resulted in a 17% increase of the 18:3n-3 proportion in milk and cheese lipids. In BP cheese, the increase was 3%, whereas it tended to decrease in BB cheese. Additionally, the 20:5n-3 and 22:5n-3 proportions tended to increase in SF cheese from the CoP to the ExP. Compared with the AF cheeses, cheeses from cows fed CT-containing legumes were judged harder and tended to be less adhesive to the palate. In addition, SF and BP cheeses had less rind. In conclusion, feeding SF compared with BB and BP increased the content of 18:3n-3 in the milk and the cheese without a negative effect on flavor of the cheese. Despite a similar CT content, the 2 birdsfoot trefoil cultivars had opposite effects on milk urea and 18:3n-3 deposition, suggesting that, besides the content, the chemical structure may have had an important effect on the CT efficacy.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/3.0/
dc.subject
condensed tannins
en_US
dc.subject
milk
en_US
dc.subject
cheese
en_US
dc.subject
quality
en_US
dc.title
Ability of 3 tanniferous forage legumes to modify quality of milk and Gruyère-type cheese
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported
dc.date.published
2015-11-18
ethz.journal.title
Journal of Dairy Science
ethz.journal.volume
99
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
J. dairy sci.
ethz.pages.start
205
en_US
ethz.pages.end
220
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
000032582
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03428 - Kreuzer, Michael / Kreuzer, Michael
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03428 - Kreuzer, Michael / Kreuzer, Michael
ethz.date.deposited
2017-06-11T21:10:47Z
ethz.source
ECIT
ethz.identifier.importid
imp593653b01b8cd48458
ethz.ecitpid
pub:167301
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-24T10:01:08Z
ethz.rosetta.lastUpdated
2019-11-28T15:12:29Z
ethz.rosetta.versionExported
true
ethz.COinS
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