Fatty acid composition and fat content in milk from cows grazing in the Alpine region

Roda, Gabriella; Fiala, Stefano; Vittorini, Michela; Secundo, Francesco

doi:10.1007/s00217-015-2473-3

Cited by 6 publications

(5 citation statements)

References 37 publications

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“…Milk of Burlina cows showed lower SFA and PUFA percentage, and greater UFA, MUFA, C14:0, C16:0 and C18:0 percentage (Niero et al 2016) than milk of PI cows from our study. In cows grazed on alpine pastures, Falchero et al (2010) detected twice PUFA and greater LCFA percentage compared with the present study, and Roda et al (2015) reported greater C18:0, and lower C14:0 and C16:0 percentage than our findings. All mentioned studies used gas chromatography as analytical method for milk FA determination.…”

Section: Resultscontrasting

confidence: 63%

Phenotypic variation of milk fatty acid composition of Pinzgauer cattle breed

Manuelian¹,

Visentin²,

Penasa³

et al. 2017

Italian Journal of Animal Science

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This paper investigated sources of variation of milk fatty acid (FA, g/100 g total FA) profile routinely predicted by mid-infrared spectroscopy in Pinzgauer dual-purpose cattle breed. A total of 19,578 individual milk samples collected from 1232 cows and 77 herds between 2011 and 2014 were available for phenotypic characterisation. Data were analysed using a linear mixed model which included stage of lactation, parity and their interaction as fixed effects, and cow and herdtest-day as random effects. Milk yield averaged 20.87 kg/d, and means for fat, protein and casein were 4.01, 3.44 and 2.72%, respectively. Saturated FA (SFA), monounsaturated FA (MUFA) and polyunsaturated FA (PUFA) averaged 69.20, 25.43 and 3.19 g/100 g total FA, respectively. About half of the SFA were provided by C16:0 (31.24 g/100 g total FA), and almost all MUFA by C18:1 (22.18 g/100 g total FA). Fixed effects were significant in explaining the variation of the studied traits. Milk of first-parity cows had the lowest percentage of SFA, medium-chain FA and C14:0, and the greatest percentage of MUFA, PUFA, trans FA, short-and long-chain FA, and C18:1. Saturated FA, C14:0 and C16:0 increased from calving until 120 days in milk, whereas unsaturated FA, MUFA, PUFA, long-chain FA, C18:0 and C18:1 decreased. Although both parity and stage of lactation affected milk FA, greater variation was observed during lactation than among parities.

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Section: Resultscontrasting

confidence: 63%

Phenotypic variation of milk fatty acid composition of Pinzgauer cattle breed

Manuelian¹,

Visentin²,

Penasa³

et al. 2017

Italian Journal of Animal Science

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“…Compared to silage feed, hay or fresh grass induces elevated concentrations of long chain polyunsaturated fatty acids (PUFA) and a decrease of short and medium chain fatty acids as confirmed by Bugaud et al [6]. In a recent study Roda et al [7] confirmed that grazing cows, specifically at high altitude, have a fat profile with higher content of PUFA. In ruminants, the relation of feed fatty acids (FA) to those FAs found in milk is more complex than in monogastric animals, since ruminal bio hydrogenation adds another factor that modifies dietary FAs.…”

Section: Introductionmentioning

confidence: 84%

“…Administration of high energy feed (sunflower or soy bean supplements) or other fatty supplements such as oil seeds (e.g. linseed oil), algae or fish oil, does not affect milk yield but has an influence on the composition of FAs [7][8][9][10][11][12][13][14][15][16][17][18]. These kinds of diets increase monounsaturated fatty acids (MUFAs) and PUFAs, such as alpha-linolenic acid (C18:3c9,12,15, ALA) as well as other unsaturated FAs, which are substrates for microbial hydrogenation in the rumen and are converted to a variety of unsaturated FAs, such as vaccenic acid (C18:1t11) or rumenic acid (C18:2c9,t11) [8,[10][11][12]19].…”

Section: Introductionmentioning

confidence: 99%

Discrimination of haymilk and conventional milk via fatty acid profiles

et al. 2018

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Milk produced by feeding silage-free feed has become popular in Europe. This kind of milk has recently been recognized as "traditional speciality guaranteed" by the European Union. As a consequence, an analytical discrimination of this silagefree produced milk quality has become necessary. In this study, discrimination of "haymilk" (HM) from conventional milk (CM) in retail samples was attempted taking in consideration all feeding seasons. For analytical discrimination, a partial least square discriminant analysis (PLS-DA) to fatty acids methyl esters (FAMEs) obtained from analysis by gas chromatography was applied. All groups of long-chain fatty acids, including saturated, odd chain fatty acids, mono-and polyunsaturated fatty acids of both cis/trans configuration, contributed to discrimination of the two types of milk, where alpha linolenic acid (+ 37% in HM) and conjugated linoleic acid (C18:2c9t11-+ 22% in HM) were the most relevant for calibration. Applying PLS-DA was successful in discriminating CM and HM from retail milk in all seasons. From 48 identified fatty acids, 18 showed different levels in CM and HM samples and could be used for discrimination of the two groups. The method was able to discriminate HM and CM produced in the cold season, but showed unclear results in the warm season due to a higher scattering of both groups. These higher deviations were attributed to the fact that most dairy cows are able to consume fresh grass during summer. Although it is not possible to discriminate HM and CM produced in warm season, the fatty acid pattern of HM can be taken as a reference, from which a properly produced HM should not deviate. A separate calibration for each season is recommended for optimal results.

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“…Agreement with our results Collomb et al [ 31 ], Rego et al [ 32 ] and Stergiadis et al [ 33 ] found decreased concentrations in milk of C18:1 cis-9, C18:2 cis-9, cis-12, and C18:3 cis-9, cis-12, cis-15 from animals given an oil supplementation in contrast with basal diets. This could be explained because unsaturated trans FA as vaccenic and rumenic acids increase in grassland cows [ 34 ]. Rumenic acid is the primary octadecadienoic acid isomer (cis-9, trans- 11-octadecadienoic acid), which accounts for more than 82% of the total in dairy products [ 35 ].…”

Section: Discussionmentioning

confidence: 99%

Influence of supplemental canola or soybean oil on milk yield, fatty acid profile and postpartum weight changes in grazing dairy goats

Lerma-Reyes¹,

Mendoza-Martínez

Rubio³

et al. 2018

Asian-Australas J Anim Sci

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ObjectiveThis experiment was designed to evaluate the effect of supplementation with soybean or canola oil on milk production and the composition of long chain fatty acids as well as weight changes in the goats and their kids.MethodsThirty nine mulitparous crossed Alpine×Nubian goats (initial body weight [BW] 43.5±1.7 kg) from the day of parturition were assigned to the treatments: grazing control (n = 15); grazing plus 20 mL/goat/d of supplemental soybean oil (n = 12); and grazing plus 20 mL/goat/d of supplemental canola oil (n = 12) from November 26, 2014 to March 7, 2015. The planned contrasts were: CI (control vs supplemented with oils); CII (soybean vs canola oil) to compare the treatment effects.ResultsThe vegetable oil supplementation reduced weight losses in lactating goats (CI: −0.060 vs 0.090 kg/d; p = 0.03) but did not improve milk production or affect kids’ growth. The content of C4, C6, C8, C10, C11, C14, and C18:1n9t in the milk was increased (p<0.05) with respect to control. However, C12, C14, C16, C18, C18:1n9c, C18:2n6c, and C18:3n3 were reduced (p<0.05) in supplemented goats. Conjugated linoleic acid (CLA) was increased (p<0.05) in goats supplemented with oils compared to the control group.ConclusionSupplementation with 20 mL/d of soybean or canola oil did not affect milk production or kids’ performance; however, it increased CLA concentration and reduced the reduced weight losses in lactating goats.

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Fatty acid composition and fat content in milk from cows grazing in the Alpine region

Cited by 6 publications

References 37 publications

Phenotypic variation of milk fatty acid composition of Pinzgauer cattle breed

Phenotypic variation of milk fatty acid composition of Pinzgauer cattle breed

Discrimination of haymilk and conventional milk via fatty acid profiles

Influence of supplemental canola or soybean oil on milk yield, fatty acid profile and postpartum weight changes in grazing dairy goats

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