Effect of incremental amounts of camelina oil on milk fatty acid composition in lactating cows fed diets based on a mixture of grass and red clover silage and concentrates containing camelina expeller

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Halmemies-Beauchet-Filleau , A , Shingfield , K J , Simpura , I , Kokkonen , T , Jaakkola , S , Toivonen , V & Vanhatalo , A 2017 , ' Effect of incremental amounts of camelina oil on milk fatty acid composition in lactating cows fed diets based on a mixture of grass and red clover silage and concentrates containing camelina expeller ' , Journal of Dairy Science , vol. 100 , no. 1 , pp. 305-324 . https://doi.org/10.3168/jds.2016-11438

Title: Effect of incremental amounts of camelina oil on milk fatty acid composition in lactating cows fed diets based on a mixture of grass and red clover silage and concentrates containing camelina expeller
Author: Halmemies-Beauchet-Filleau, A.; Shingfield, K. J.; Simpura, I.; Kokkonen, T.; Jaakkola, S.; Toivonen, V.; Vanhatalo, A.
Other contributor: University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Department of Agricultural Sciences



Date: 2017-01
Language: eng
Number of pages: 20
Belongs to series: Journal of Dairy Science
ISSN: 0022-0302
DOI: https://doi.org/10.3168/jds.2016-11438
URI: http://hdl.handle.net/10138/309593
Abstract: Camelina is an ancient oilseed crop that produces an oil rich in cis-9,cis-12 18:2 (linoleic acid, LA) and cis9,cis-12, cis-15 18:3 (alpha-linolenic acid, ALA); however, reports on the use of camelina oil (CO) for ruminants are limited. The present study investigated the effects of incremental CO supplementation on animal performance, milk fatty acid (FA) composition, and milk sensory quality. Eight Finnish Ayrshire cows (91 d in milk) were used in replicated 4 x 4 Latin squares with 21-d periods. Treatments comprised 4 concentrates (12 kg/d on an air-dry basis) based on cereals and camelina expeller containing 0 (control), 2, 4, or 6% CO on an air-dry basis. Cows were offered a mixture of grass and red clover silage (RCS; 1:1 on a dry matter basis) ad libitum. Incremental CO supplementation linearly decreased silage and total dry matter intake, and linearly increased LA, ALA, and total FA intake. Treatments had no effect on whole-tract apparent organic matter or fiber digestibility and did not have a major influence on rumen fermentation. Supplements of CO quadratically decreased daily milk and lactose yields and linearly decreased milk protein yield and milk taste panel score from 4.2 to 3.6 [on a scale of 1 (poor) to 5 (excellent)], without altering milk fat yield. Inclusion of CO linearly decreased the proportions of saturated FA synthesized de novo (4:0 to 16:0), without altering milk fat 18:0, cis-9 18:1, LA, and ALA concentrations. Milk fat 18:0 was low (
Subject: camelina
saturated fatty acid
trans fatty acid
conjugated linoleic acid
CONJUGATED LINOLEIC-ACID
RUMINAL LIPID-METABOLISM
SUNFLOWER-SEED OIL
DAIRY-COWS
LINSEED OIL
AMINO-ACIDS
PLANT OILS
MAMMARY LIPOGENESIS
NITROGEN-METABOLISM
RUMEN FERMENTATION
4111 Agronomy
412 Animal science, dairy science
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