Changes in the fatty acid composition of goat milk fat after a 48-hour fast

Massart-Leën, Anne-Marie; Peeters, G

doi:10.1051/rnd:19850704

Cited by 5 publications

(2 citation statements)

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“…The rise of three iso fatty acids in the present study after the administration of unlabelled isobutyrate in concentrations above physiological levels, is very striking if one considers that all the glands, controls included, received enough valine to cover milk protein production (Hardwick and Linzell, 1960). It is well known that isobutyric acid is produced by the microbial attack of valine in the rumen and serves as a primer molecule for branched-chain fatty acid synthesis (Allison et al, 1961 ;Emmanuel, 1974 Peeters, 1985). The decrease in the proportion of certain milk fatty acids during fasting is ascribed to a decrease of the main precursors in the blood and to a rise of the supply of other fatty acids which are derived from adipose tissue lipolysis (Linzell, 1967 ;Annison et al, 1968 ;Massart-Le6n and Peeters, 1985 (Popjak et al, 19511.…”

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confidence: 93%

Effects of valerate and isobutyrate on fatty acid secretion by the isolated perfused mammary gland of the lactating goat

Massart-Leën¹,

Peeters²,

Messom³

et al. 1986

Reprod. Nutr. Dévelop.

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mentioning

confidence: 93%

Effects of valerate and isobutyrate on fatty acid secretion by the isolated perfused mammary gland of the lactating goat

Massart-Leën¹,

Peeters²,

Messom³

et al. 1986

Reprod. Nutr. Dévelop.

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“…Alors que ces travaux chez la vache laitière ne montrent pas d'altération du taux butyreux par la restriction alimentaire de longue durée, une privation d'alimentation pendant 48 h chez la chèvre laitière, conduit à une diminution de la production de lait qui s'accompagne d'une diminution de la sécré-tion de matières grasses dans le lait et d'une modification de sa composition en AG(Massart-Leen et Peeters 1985). Aussi, pour la première étude de nutrigénomique (cf.…”

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La fonction de lactation : régulation de la biosynthèse des constituants du lait

et al. 2013

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La fonction de lactation : régulation de la biosynthèse des constituants du laitLa lactation est contrôlée par de nombreux gènes dont l'expression varie selon différents facteurs, notamment, génétiques et nutritionnels. Ces dernières décennies ont vu l'émergence des études en « omiques » qui permettent de dévoiler une partie des mécanismes moléculaires impliqués dans la biosynthèse et la sécrétion des constituants du lait.INRA Productions Animales, 2013, numéro 2 Figure 2. Effet du polymorphisme au locus CSN1S1 sur l'expression génique mammaire et sur les altérations biologiques associées (d'après Ollier et al 2008). Représentation schématique d'une cellule épithéliale mammaire de chèvre homozygote pour un allèle « défectif ». Les ratios d'expression et le sens de la régulation sont mentionnés à côté des symboles des gènes identifiés.LEROUX C., BERNARD L., DESSAUGE F., LE PROVOST F., MARTIN P., 2013. La fonction de lactation : régulation de la biosynthèse des constituants du lait. In : Numéro spécial, La vache et le lait. Abstract Résumé

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A two-pool model of tritiated water kinetics to predict body composition in unfasted lactating goats

et al. 1988

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1988). A two-pool model of tritiated water kinetics to predict body composition in unfasted lactating goats. ABSTRACTA two-pool model of tritiated water kinetics was investigated as a means of partitioning total body water into empty body water and gut water in 17 lactating goats. Empty body water, gut water and total body water were of a similar magnitude to, and highly correlated with, a rapidly equilibrating tritiated water pool, a more slowly equilibrating pool and the sum of these two pools, respectively.Empty body fat was poorly correlated with both live weight and empty body weight (R 2 = 0-42 and 0-51, respectively). However, there was a strong inverse relationship between the water and fat contents of the empty body. Consequently, empty body fat was accurately predicted by a multiple regression equation which included both empty body weight and empty body water as independent variables (R 2 = 0-97). Substitution of these variables with estimates derived from tritiated water kinetics still resulted in a high correlation (R 2 = 0-88). Tritiated water kinetics offered little improvement over live weight alone in the prediction of empty body protein, empty body ash or fat-free empty body.

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Changes in the fatty acid composition of goat milk fat after a 48-hour fast

Abstract: Summary. Five

Cited by 5 publications

References 18 publications

Effects of valerate and isobutyrate on fatty acid secretion by the isolated perfused mammary gland of the lactating goat

Effects of valerate and isobutyrate on fatty acid secretion by the isolated perfused mammary gland of the lactating goat

La fonction de lactation : régulation de la biosynthèse des constituants du lait

A two-pool model of tritiated water kinetics to predict body composition in unfasted lactating goats

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