Effect of forage type and supplemental dietary vitamin E on milk oxidative stability

Nicholson, J. W. G.; St-Laurent, A. M.

doi:10.4141/cjas91-139

Cited by 29 publications

(18 citation statements)

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“…Similarly, the α-tocopherol content in cheese fat was positively influenced by the vitamin E supplementation of the preserved-foragebased rations, but only with the high level of supplementation. These results agree with previous experimental findings related to milk [26,29,57,70]. The retinol and α-tocopherol contents in milk fat directly depend on their level in the cow's diet, but also on that of β-carotene for retinol [29].…”

Section: Vitamin Supplementationsupporting

confidence: 83%

Relationships between the conditions of cow’s milk production and the contents of components of nutritional interest in raw milk farmhouse cheese

Lucas

Agabriel

Martin

et al. 2006

Lait

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-The aim of this correlational study was to: (1) characterize the composition of cow's milk farmhouse cheeses in terms of average contents and variability in fatty acids, retinol, α-tocopherol, folate, β-carotene, xanthophylls, calcium, phosphorus, magnesium, potassium, zinc, sodium chloride and total antioxidant capacity (TAC) and (2) identify herd characteristics and feeding practices associated with differences in cheese composition. Three hundred and six farmhouse pressed cheeses, produced under real herd management conditions throughout the year, were collected. The conditions of milk production were identified beforehand by means of surveys. The farmhouse cheese was characterized by a high variability in composition. The nature of the basic fodder ration (pasture vs. preserved forages, in particular) explained a great part of the variability in the fat-soluble components in the cheese. The cheese fat was richer in C4:0, C18:0, cis-9 C18:1, trans-11 C18:1, cis-9, trans-11 C18:2 (CLA), β-carotene, xanthophylls, retinol, α-tocopherol and TAC and poorer in C10:0, C14:0 and C16:0 with the pasture-based rations compared with the preservedforage-based rations. In the grazing period, it was the poorest in C6:0 to C14:0, β-carotene and retinol and the richest in cis-9 C18:1, C18:2 n-6 and C18:3 n-3 with the alpine pasture. It was higher in trans-11 C18:1, CLA, β-carotene and xanthophylls and lower in C16:0 with a first-use pasture compared with a pasture of higher use rank. A higher percentage of concentrate was associated with higher levels of C14:0 and C16:0 and lower levels of trans-11 C18:1, CLA, C18:2 n-6, C18:3 n-3, xanthophylls and retinol. In the indoor feeding period, the cheese fat was the poorest in trans-11 C18:1, CLA, C18:3 n-3 and β-carotene with the maize-based rations, while the vitamin A and E supplementation was associated with higher retinol and α-tocopherol contents, respectively. Herd characteristics did not markedly affect the cheese composition, except the breed. In particular, Abondance and Montbéliarde breeds were associated with higher CLA percentage in the cheese than the * Corresponding author (通讯作者): jbc@clermont.inra.frArticle published by EDP Sciences and available at http://www.edpsciences.org/lait or http://dx

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Section: Vitamin Supplementationsupporting

confidence: 83%

Relationships between the conditions of cow’s milk production and the contents of components of nutritional interest in raw milk farmhouse cheese

Lucas

Agabriel

Martin

et al. 2006

Lait

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“…In agreement with this, in the present study, the concentrations of α-tocopherol and β-carotene in milk paralleled those observed in plasma. A clear relationship between plasma concentrations and secretion into milk of α-tocopherol and β-carotene has been also reported by other authors [24,26,39]. The concentrations of the two fat-soluble antioxidants in milk derived from pasture supplemented groups were much higher than the minima suggested by Al-Mabruk et al [1] to ensure a favourable oxidative stability of milk.…”

Section: Discussionsupporting

confidence: 70%

Increasing pasture intakes enhances polyunsaturated fatty acids and lipophilic antioxidants in plasma and milk of dairy cows fed total mix ration

Terra

Marino

Manenti

et al. 2010

Dairy Sci. Technol.

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-Polyunsaturated fatty acids and lipo-soluble vitamins in the milk are considered as neutraceutical compounds due to their beneficial effects on human health. The aim of the present study was to evaluate the changes in fatty acid composition and fat-soluble antioxidant content in plasma and milk from cows fed with different dietary proportions from pasture. Cows from a farm in the Hyblean mountain region in Italy were randomly divided into three groups (12 animals per group): CTRL fed only a total mix ration (TMR); 30P fed a TMR supplemented with 30% dry matter (DM) from pasture and 70P fed a TMR supplemented with 70% DM of pasture. Blood and milk samples were collected, stored and analysed for their content of fatty acids and fat-soluble antioxidants. Fatty acid profiles were significantly modified by different diets. CLA, vaccenic acid (VA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) significantly (P < 0.05) increased in plasma as a function of the proportion of pasture added to the diet. In agreement with these data, a progressively significant (P < 0.05) increase in concentrations of VA, CLA and EPA was observed in the milk. Such changes in fatty acid composition were accompanied by a concomitant increase in the concentrations of α-tocopherol and β-carotene in both plasma and milk. The increase in EPA, DHA and CLA, β-carotene and α-tocopherol in plasma may not only have a beneficial impact for milk and meat quality, but may also result in an increased protection against inflammatory events. Article published by EDP SciencesRésumé -L'augmentation de la teneur en herbe de la ration améliore la teneur en acides gras polyinsaturés et en antioxydants lipophiles dans le plasma et le lait des vaches laitières en ration complète. Les acides gras polyinsaturés (AGPI) et les vitamines liposolubles du lait sont considérés comme des composés nutraceutiques en raison de leurs effets bénéfiques pour la santé. Le but de cette étude était d'évaluer les changements de composition en acides gras et de teneur en antioxydants liposolubles dans le plasma et le lait de vaches laitières recevant différentes proportions de pâture. Les vaches provenant d'une ferme de la région du mont Iblei en Italie, ont été réparties aléatoirement en trois groupes (12 animaux par groupe) : un groupe témoin recevant une alimentation en ration complète (TMR) ; un groupe recevant une alimentation TMR supplémentée à hauteur de 30 % de matière sèche en herbe ; un groupe recevant une alimentation TMR supplé-mentée à hauteur de 70 % de matière sèche en herbe. Des échantillons sanguins et du lait ont été collectés, conservés et analysés pour leur teneur en acides gras et en antioxydants liposolubles. Les profils en acides gras étaient modifiés de façon significative par les différents régimes. L'acide linoléique conjugué (CLA), l'acide vaccénique (VA), l'acide eisapentanoïque (EPA) et l'acide docohexanoïque (DHA) augmentaient significativement (P < 0,05) dans le plasma en fonction de la proportion de pâture. En accord avec ces rés...

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“…The amount of vitamin E associated with the fat globule membrane is considered to be the main determinant of the oxidative stability of milk. In earlier trials conducted mainly in Canada (Nicholson & St-Laurent, 1991;Charmley & Nicholson, 1994), dietary supplementation of vitamin E did not consistently increase the -tocopherol concentration in milk. However, the oxidative stability of milk, as estimated by a panel of three trained evaluators, generally increased (Nicholson & St-Laurent, 1991).…”

Section: Antioxidants and Milk Oxidationmentioning

confidence: 90%

“…In earlier trials conducted mainly in Canada (Nicholson & St-Laurent, 1991;Charmley & Nicholson, 1994), dietary supplementation of vitamin E did not consistently increase the -tocopherol concentration in milk. However, the oxidative stability of milk, as estimated by a panel of three trained evaluators, generally increased (Nicholson & St-Laurent, 1991). Dietary vitamin E supplementation at 9954 IU/d increased the "-tocopherol concentration in milk by about 45%, which was sufficient to prevent milk oxidation (Focant et al, 1998).…”

Section: Antioxidants and Milk Oxidationmentioning

confidence: 90%

Antioxidants and dairy production: the example of flax

Petit

2009

R. Bras. Zootec.

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-This manuscript reports on the main problems decreasing productivity of dairy cows (e.g. fatty liver syndrome and poor fertility) and how antioxidants could enhance it. High producing dairy cows are prone to oxidative stress, and the situation can be exacerbated under certain environmental, physiological, and dietary conditions. Antioxidants have important effects on the expression of genes involved in the antioxidant status, which may enhance animal health and reproduction. Moreover, antioxidants may contribute to decrease the incidence of spontaneous oxidized flavour in milk enriched in polyunsaturated fatty acids. Plant lignans are strong antioxidants and flax is the richest source of plant lignans. Flax lignans are converted in the mammalian lignans enterolactone and enterodiol. The main mammalian lignan in milk is enterolactone and flax lignans are converted in enterolactone mainly under the action of ruminal microbiota. Therefore, ruminal microbiota may be the most important flora to target for plant lignan metabolism in order to increase concentration of mammalian lignan antioxidants in milk of dairy cows. However, more research is required to improve our knowledge on metabolism of other antioxidants in dairy cows and how they can contribute in decreasing milk oxidation.Key Words: antioxidant, bovine, flaxseed, metabolism Antioxidantes e produção leiteira: o exemplo da linhaça RESUMO -O artigo aborda os principais problemas na diminuição da produtividade de vacas leiteiras (por exemplo, síndrome do fígado gorduroso e baixa fertilidade) e como antioxidantes podem melhorá-los. Vacas de alta produção são propensas ao estresse oxidativo, e a situação pode ser exacerbada sob certas condições ambientais, fisiológicas e de alimentação. Os antioxidantes têm importantes efeitos na expressão de genes envolvidos no status antioxidante, o qual pode melhorar a saúde animal e a reprodução. Além disso, os antioxidantes podem contribuir na diminuição da incidência de oxidação espontânea no leite enriquecido com ácidos graxos poli-insaturados. Lignanas vegetais são potentes antioxidantes e a semente de linhaça é a mais rica fonte de lignanas vegetais. As lignanas presentes na semente de linhaça são convertidas em lignanas mamíferas, enterolactona e enterodiol. A principal lignana mamífera no leite é a enterolactona e as lignanas da linhaça são convertidas em enterolactona principalmente sob a ação da flora ruminal. Assim, a flora ruminal pode ser a mais importante flora objetivando o metabolismo de lignanas vegetais para aumentar a concentração de antioxidantes como lignanas mamíferas no leite de vacas. No entanto, mais pesquisas são necessárias para melhorar nosso conhecimento sobre o metabolismo de outros antioxidantes em vacas leiteiras e como eles podem contribuir na diminuição da oxidação do leite.Palavras-chave: antioxidante, bovinos, metabolismo, semente de linhaça

show abstract

Effect of forage type and supplemental dietary vitamin E on milk oxidative stability

Cited by 29 publications

References 9 publications

Relationships between the conditions of cow’s milk production and the contents of components of nutritional interest in raw milk farmhouse cheese

Relationships between the conditions of cow’s milk production and the contents of components of nutritional interest in raw milk farmhouse cheese

Increasing pasture intakes enhances polyunsaturated fatty acids and lipophilic antioxidants in plasma and milk of dairy cows fed total mix ration

Antioxidants and dairy production: the example of flax

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