Optimising goat's milk and cheese fatty acid composition

Chilliard, Yves; Rouel, J.; Ferlay, Anne; Bernard, Laurence; Gaborit, P.; Raynal-Ljutovac, Ketsia; Lauret, A.; Leroux, Christine

doi:10.1533/9781845691073.2.281

Cited by 46 publications

(41 citation statements)

References 58 publications

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“…In addition, besides PUFA biohydrogenation processes, oleic acid could be isomerized in several trans-C18:1 isomers, including trans-10, as shown in microbial cultures from bovine rumen (Mosley et al, 2002). This finding is in agreement with the observed increase of several trans-C18:1 isomers in milk from goats fed oleic sunflower oil (Bernard et al, 2005c;Ferlay et al, 2003;Chilliard et al, 2006a). Nevertheless, data in Fig.…”

Section: In Vivo Results In Nutritional Studiessupporting

confidence: 91%

Expression and Nutritional Regulation of Lipogenic Genes in the Ruminant Lactating Mammary Gland

Bernard

Leroux

Chilliard

Advances in Experimental Medicine and Biology

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The effect of nutrition on milk fat yield and composition has largely been investigated in cows and goats, with some differences for fatty acid (FA) composition responses and marked species differences in milk fat yield response. Recently, the characterization of lipogenic genes in ruminant species allowed in vivo studies focused on the effect of nutrition on mammary expression of these genes, in cows (mainly fed milk fat-depressing diets) and goats (fed lipid-supplemented diets). These few studies demonstrated some similarities in the regulation of gene expression between the two species, although the responses were not always in agreement with milk FA secretion responses. A central role for trans-10 C18:1 and trans-10, cis-12 CLA as regulators of milk fat synthesis has been proposed. However, trans-10 C18:1 does not directly control milk fat synthesis in cows, despite the fact that it largely responds to dietary factors, with its concentration being negatively correlated with milk fat yield response in cows and, to a lesser extent, in goats. Milk trans-10, cis-12 CLA is often correlated with milk fat depression in cows but not in goats and, when postruminally infused, acts as an inhibitor of the expression of key lipogenic genes in cows. Recent evidence has also proven the inhibitory effect of the trans-9, cis-11 CLA isomer. The molecular mechanisms by which nutrients regulate lipogenic gene expression have yet to be well identified, but a central role for SREBP-1 has been outlined as mediator of FA effects, whereas the roles of PPARs and STAT5 need to be determined. It is expected that the development of in vitro functional systems for lipid synthesis and secretion will allow future progress toward (1) the identification of the inhibitors and activators of fat synthesis, (2) the knowledge of cellular mechanisms, and (3) the understanding of differences between ruminant species.

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Section: In Vivo Results In Nutritional Studiessupporting

confidence: 91%

Expression and Nutritional Regulation of Lipogenic Genes in the Ruminant Lactating Mammary Gland

Bernard

Leroux

Chilliard

Advances in Experimental Medicine and Biology

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206

225

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“…Milk fat, protein, lactose and SNF percentage was not affected significantly by bacteria and oil administration (Table ). These findings for fat content are comparable to the results of previous reports that stated no decrease in milk fat content by supplementation of polyunsaturated fatty acids (PUFAs) in diet fed to dairy goats. Schingoethe et al found that milk production and energy‐corrected milk were similar for cows fed yeast culture supplemented diets.…”

Section: Resultssupporting

confidence: 88%

Dietary supplementation of Butyrivibrio fibrisolvens alters fatty acids of milk and rumen fluid in lactating goats

et al. 2015

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“…The highest values of PUFA in milk of group P were registered in June and September, according to the fatty acid profile of pasture along the trial as reported also by Tsiplakou, Mountzouris and Zervas (2006) on grazing sheep. Both linoleic and linolenic acids levels in milk fat did not significantly increase when linseed were supplemented, according to Mir, Goonewardene, Okine, Jaegear and Scheer (1999), Chilliard et al (2006), Nudda et al (2006).…”

Section: Discussionmentioning

confidence: 89%

Fatty Acid Profile and CLA Content of Goat Milk: Influence of Feeding System

Tudisco¹,

Grossi²,

Addi³

et al. 2014

JFR

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There is great interest in producing bioethanol from biomass and there is much emphasis on exploiting The effect of pasture and of diet linseed supplementation on fatty acid profile of milk was evaluated using 45 pluriparous goats, equally divided after kidding into three homogeneous groups (H, P and L). Group H (control) and L were housed in a stall receiving alfalfa hay, while group P was led to pasture. The groups received concentrate which for group L had linseed as ingredient. Average milk yield did not statistically differ between the groups. Groups P showed significantly higher fat content than group H and L (4.62% vs 3.70%, and 3.90% respectively for groups P, H and L; P < 0.01). On the contrary, milk from goats of group H and L had significantly higher content of lactose (4.65% and 4.61% vs 4.57%, respectively for groups H, L and P; P < 0.05). The levels of C18:1 cis9, C18:1 trans11 and MUFA in milk were significantly (P < 0.05) increased by both the pasture and linseed, while linoleic acid (C18:2) and PUFA were significantly (P < 0.05) higher in group P compared either to H or to L groups. The highest values of CLAs, either as t11 CLA and t10 c12 CLA or as CLA, have been registered in milk of group P, the lowest in group H. These parameters in milk of group L were significantly (P < 0.05) lower or higher than those of group P and H, respectively.

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Optimising goat's milk and cheese fatty acid composition

Cited by 46 publications

References 58 publications

Expression and Nutritional Regulation of Lipogenic Genes in the Ruminant Lactating Mammary Gland

Expression and Nutritional Regulation of Lipogenic Genes in the Ruminant Lactating Mammary Gland

Dietary supplementation of Butyrivibrio fibrisolvens alters fatty acids of milk and rumen fluid in lactating goats

Fatty Acid Profile and CLA Content of Goat Milk: Influence of Feeding System

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