Variation in Fatty Acid Contents of Milk and Milk Fat Within and Across Breeds

Soyeurt, Hélène; Dardenne, Pierre; Gillon, Alain; Croquet, Coraline; Vanderick, Sylvie; Mayeres, Patrick; Bertozzi, Carlo; Gengler, Nicolas

doi:10.3168/jds.s0022-0302(06)72534-6

Cited by 137 publications

(143 citation statements)

References 17 publications

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“…In the pre-experimental period milk fat from Holstein cows had slightly lower concentrations of 12:0 (20.63 g/ 100 g) and 14:0 (20.86 g/100 g) than that from Montbé liarde cows, in agreement with Lawless et al (1999) and Soyeurt et al (2006). No difference in milk fat percentage of 16:0 was observed between the breeds during the two periods, in agreement with Soyeurt et al (2006) but at variance with Lawless et al (1999).…”

Section: Discussionsupporting

confidence: 64%

“…The effects linked to individual variations (Kelsey et al, 2003) or breed are significant but limited. However, little information is available on the interaction between breed and nutritional factors and on the comparison between Holstein and Montbé liarde cows (Soyeurt et al, 2006). Also, to our knowledge, no work has been published on the effect of time of milking on milk FA composition.…”

Section: Introductionmentioning

confidence: 90%

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Effects of supplementation of maize silage diets with extruded linseed, vitamin E and plant extracts rich in polyphenols, and morning v. evening milking on milk fatty acid profiles in Holstein and Montbéliarde cows

Ferlay

Martin

Lerch

et al. 2010

Animal

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The aim of this study was to evaluate the effects on dairy performance and milk fatty acid (FA) composition of (i) supplementation with extruded linseed (EL), (ii) supplementation with synthetic or natural antioxidants, namely vitamin E and plant extracts rich in polyphenols (PERP), (iii) cow breed (Holstein v. Montbé liarde) and (iv) time of milking (morning v. evening). After a 3-week pre-experimental period 24 lactating cows (12 Holstein and 12 Montbé liarde) were divided up into four groups of six cows: the first group received a daily control diet (diet C) based on maize silage. The second group received the same diet supplemented with EL (diet EL, fat level approximately 5% of dietary dry matter (DM)). The third group received the EL diet plus 375 IU/kg diet DM of vitamin E (diet ELE). The fourth group received the ELE diet plus 10 g/kg diet DM of a PERP mixture (diet ELEP). Compared with the diet C, feeding EL-rich diets led to lower concentrations of total saturated FA (SFA) and higher concentrations of stearic and oleic acids, each trans and cis isomer of 18:1 (except c12-18:1), non-conjugated isomers of 18:2, some isomers (c9t11-, c9c11-and t11t13-) of conjugated linoleic acid (CLA), and 18:3n-3. The vitamin E supplementation had no effect on milk yield, milk fat or protein percentage and only moderate effects on milk concentrations of FA (increase in 16:0, decreases in 18:0 and t6/7/8-18:1). The addition of PERP to vitamin E did not modify milk yield or composition and slightly altered milk FA composition (decrease in total saturated FA (SFA) and increase in monounsaturated FA (MUFA)). The minor effects of vitamin E may be partly linked to the fact that no milk fat depression occurred with the EL diet. During both periods the Holstein cows had higher milk production, milk fat and protein yields, and milk percentages of 4:0 and 18:3n-3, and lower percentages of odd-branched chain FA (OBCFA) than the Montbéliarde cows. During the experimental period the Holstein cows had lower percentages of total cis 18:1, and c9,c11-CLA, and higher percentages of 6:0, 8:0, t12-, t16/c14-and t13/14-18:1, and 18:2n-6 than Montbéliarde cows because of several significant interactions between breed and diet. Also, the total SFA percentage was higher for morning than for evening milkings, whereas those of MUFA, total cis 18:1, OBCFA and 18:2n-6 were lower. Extruded linseed supplementation had higher effect on milk FA composition than antioxidants, breed or time of milking.

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Section: Discussionsupporting

confidence: 64%

Section: Introductionmentioning

confidence: 90%

Effects of supplementation of maize silage diets with extruded linseed, vitamin E and plant extracts rich in polyphenols, and morning v. evening milking on milk fatty acid profiles in Holstein and Montbéliarde cows

Ferlay

Martin

Lerch

et al. 2010

Animal

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“…Emphasise that the fatty acid composition is influenced not only by genetic factors but also by environmental factors such as diet and supplementation. But, according Soyeurt et al (2006), the feed supplementation, the most popular way to improve the nutritional quality, presents certain disadvantages. It does not consider the animal genetic effect, and this improvement is not permanent.…”

Section: Discussionmentioning

confidence: 99%

Intramuscular fat and fatty acid profile of muscle of lambs finished in irrigated pasture

Lobo

Bomfim

Facó

et al. 2013

Journal of Applied Animal Research

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The aim of this research was to study the differences between breeds through the analyses of the intramuscular fat content and fatty acid profile of the main local hair sheep breeds of Brazil, Morada Nova (MO), Brazilian Somali (SO) and Santa Ineˆs (SI) and the crossbred ½ Dorper )½ Morada Nova (F1). Genetic group was a significant source of variation for intramuscular fat content, individual fatty acids, polyunsaturated fatty acid (PUFA)/ saturated fatty acid (SFA) ratio, total PUFA, essential fatty acids (EFA), total n-3 and n-6 PUFA and D9 desaturase and atherogenic index. MO breed presented the highest values of conjugated linoleic acid, PUFA (similar to F1) and PUFA/SFA (similar to F1). MO meat had the highest proportion of EFA, despite the value was similar to F1. SO breed showed highest proportion of myristc, pentadecanoic, palmitic and palmitoleic acids in muscle, and highest D9 desaturase indices. In conclusion, there are differences between genetic group for the profile of fatty acids and intramuscular fat. The meat from MO lambs had better attributes of fatty acid composition with higher PUFA, PUFA/SFA ratio, EFA and total n-3 PUFA.

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“…This technology is faster and cheaper than the reference chemical analysis. Thanks to these estimations of FAs by infrared, Soyeurt et al (2006b and2008b) studied the differences across dairy breeds on a large dataset using mixed models. The obtained results for Jersey, Montbeliarde, and Normande breeds were generally in agreement with those mentioned in Table 1.…”

Section: Breed Differencesmentioning

confidence: 99%