Fatty acid content in milk of dairy cows on a diet with high fat content derived from rapeseed

Komprda, T.; Dvořák, R.; Fialová, M.; Šustová, Květoslava; Pechová, Alena

doi:10.17221/4172-cjas

Cited by 16 publications

(10 citation statements)

References 13 publications

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“…In the present study, a significantly higher percentage of SFAs around day 150 was associated with the later stages of lactation (Komprda et al, 2005), when the animals were no longer in negative energy balance (Ducháček et al, 2012;Stádník et al, 2015). Unlike the SFAs, significantly higher levels of MUFAs and PUFAs were observed around day 30 compared to day 150 of lactation.…”

Section: Discussionsupporting

confidence: 48%

Milk fatty acid composition as an indicator of energy status in Holstein dairy cows

et al. 2017

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Abstract. Transition dairy cows often enter a stage of negative energy balance during which the utilization of energy reserves is reflected in the milk fatty acid (FA) composition. In this study, metabolic status was evaluated by measuring milk FA, ruminal short-chain FA (RSCFA), and serum biochemical parameters in Holstein cows. Samples (milk, rumen contents, and blood) were collected around days 30 (early) and 150 (middle) of lactation, and rumen contents and blood samples were collected 30 days before calving (dry). Fatty acids were extracted and FA composition was determined. Glucose, triacylglycerols, total cholesterol, low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C), beta-hydroxybutyric acid (BHB), and non-esterified fatty acid (NEFA) concentrations were determined in serum samples. Lower percentages of saturated FA in milk and higher percentages of monounsaturated FA, polyunsaturated FA, and C18:1n-9 were observed in early lactation compared to mid-lactation. In rumen higher concentrations of propionic acid were determined at mid-lactation compared to early lactation. Acetic and butyric acid concentrations showed no significant differences between sampling intervals. In serum higher glucose concentrations were observed during the dry period and mid-lactation than during early lactation. Lower BHB and higher NEFA concentrations were noted during early lactation compared to mid-lactation and the dry period. Total cholesterol, LDL-C, HDL-C and triacylglycerols showed no significant differences between sampling intervals. The results of the present study suggest that determination of milk FA is a potential indicator of energy status in dairy cows.

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Section: Discussionsupporting

confidence: 48%

Milk fatty acid composition as an indicator of energy status in Holstein dairy cows

et al. 2017

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“…The contribution of individual FAs to total FAs in milk fat found in this study was in accordance with the previously obtained results on the cow milk fat composition reported in the Czech Republic C10:1, C11:0, C12:0, C12:1, C13:0, iso C15:0, C15:1, iso C16:0, C18:3 n6, C19:1, C20:0, C20:1 n9, C20:2 n9, C20:3 n3, C20:3 n6, C20:4 n3, C20:4 n6, C21:0, C22:0, C22:1 n9, C23:0, C24:0) 2 unidentified isomers of C18:1; CLA = conjugated linoleic acid (9-cis, 11-trans and 11-cis, 9-trans C18:2); SCFA = short-chain fatty acids (C4-C11); MCFA = medium-chain fatty acids (C12-C16); LCFA = long-chain fatty acids (C17-C24) ; SAFA = saturated fatty acids; MUFA = monounsaturated fatty acids; PUFA = polyunsaturated fatty acids; BCFA = branched-chain fatty acids (iso and anteiso) a,b different superscripts indicate differences between farms (differences within rows) (Komprda et al, 2005;Pešek et al, 2005Pešek et al, , 2006Janů et al, 2007;Samková et al, 2009). The majority of FAs in milk fat was represented by saturated FAs (64 g/100 g total FAs) while unsaturated FAs were present by 34 g/100 g total FAs.…”

Section: Discussionmentioning

confidence: 99%

Fatty acid composition of cow milk fat produced on low-input mountain farms

Frelich¹,

Šlachta²,

Hanuš³

et al. 2009

Czech J. Anim. Sci.

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ABSTRACT:The fatty acid (FA) composition of bulk milk fat was examined on three mountain dairy farms in the Czech Republic. Milk samples were collected in the period of indoor grass silage feeding (November-April) and in the grazing period (May-October). In total fifty FAs were identified in the milk fat. The two-way ANOVA with factors of the farm and of the period of milk sample collection was used for the evaluation of variation in FA concentrations. Significant differences between the farms (P < 0.01) were found in the concentration of five FAs, which accounted for 30.40 g/100 g total FAs. Significant differences between the indoor and the grazing period (P < 0.01) were found in the concentration of sixteen FAs, which accounted for 63.86 g/100 g total FAs. The content of long-chain (> C16), mono-and polyunsaturated FAs in the milk fat was higher in the grazing period (49.22, 31.69 and 4.69 g/100 g total FAs) than in the indoor period (42.25, 27.55 and 4.15 g/100 g total FAs, respectively; P < 0.01). The proportion of conjugated linoleic acid (CLA) was also higher in the grazing period (1.09 g/100 g total FAs) than in the indoor period (0.74 g/100 g total FAs; P < 0.01). The medium-chain (C12-C16) and the saturated FAs were more abundant in the milk fat in the indoor period (48.91 and 67.16 g/100 g total FAs) than in the grazing period (41.31 and 62.16 g/100 g total FAs; P < 0.001 and P < 0.01; respectively). These results indicated a positive influence of seasonal grazing on the FA profile of cow milk fat as regards its potential health effects in consumers.

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“…In ruminants, the fatty acid is degraded into monounsaturated and saturated fatty acids in the rumen by microbial biohydrogenation and only a small proportion is available for incorporation into tissue lipids (Nürnberg et al, 1998;Wood et al, 2008). There is also a possibility to change the milk fatty acid profile in cattle (Komprda et al, 2005;Liu et al, 2008;Veselý et al, 2009). Fat is typically added to diets as a source of energy.…”

mentioning

confidence: 99%

The effect of linseed diet on carcass value traits and fatty acid composition in muscle and fat tissue of fattening pigs

Bečková¹,

Václavková²

2010

CZECH J ANIM SCI

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ABSTRACT:The aim of the study was to evaluate the effect of linseed in the diet of fattening pigs on carcass value traits and changes in the fatty acid profile in muscle and fat tissue. Thirty crossbred gilts were divided into two groups (control C and experimental L) and fed a commercial feed mixture for fattening pigs. Ground linseed was added to a feed mixture for the experimental group. The average daily gain, lean meat percentage and intramuscular fat content were not affected by the linseed diet but pH1 value and drip loss were significantly influenced by dietary treatment (P < 0.01). The inclusion of linseed increased linoleic and alpha-linolenic acid content in L group (P < 0.05, P < 0.01) while arachidonic acid content was decreased in both muscle (P > 0.05) and fat tissue (P < 0.01). The content of total n-6 PUFA and n-3 PUFA and their ratio were also determined. A significant decrease in the n-6/n-3PUFA ratio was found in L group compared to C group (P < 0.01). The total SFA content in muscle tissue was not significantly affected (P > 0.05) by the linseed diet but it was decreased (P < 0.01) in backfat. The MUFA/SFA ratio was not affected by the linseed diet (P > 0.05) whereas the SFA/PUFA ratio was reduced (P < 0.01).

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Fatty acid content in milk of dairy cows on a diet with high fat content derived from rapeseed

Cited by 16 publications

References 13 publications

Milk fatty acid composition as an indicator of energy status in Holstein dairy cows

Milk fatty acid composition as an indicator of energy status in Holstein dairy cows

Fatty acid composition of cow milk fat produced on low-input mountain farms

The effect of linseed diet on carcass value traits and fatty acid composition in muscle and fat tissue of fattening pigs

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