Effect of forage/concentrate ratio and soybean oil supplementation on milk yield, and composition from Sarda ewes

Mele, Marcello; Buccioni, Arianna; Petacchi, F.; Serra, Andrea; Banni, Sebastiano; Antongiovanni, M.; Secchiari, Pier Lorenzo

doi:10.1051/animres:2006019

Cited by 58 publications

(54 citation statements)

References 39 publications

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“…With regard to the lower mammary D-9 desaturase activity with chickpea and MCF diets, a similar effect was observed in dairy ewes fed a supplemented diet with soybean oil (Mele et al 2006), suggesting an effect of the dietary lipid supplement also in this case. However, the DR of C14:0, that provide the best estimation of the mammary D-9 desaturase activity (Corl et al 2001), did not differ among treatments.…”

Section: Milk Fatty Acid Compositionsupporting

confidence: 62%

Legume grain-based supplements in dairy sheep diet: effects on milk yield, composition and fatty acid profile

et al. 2016

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Abstract. With the aim to find protein sources that are free of genetically modified organisms, the effects of legume grainbased concentrates, used as alternatives of a mixed concentrate feed containing soybean, were evaluated on sheep milk production. Twelve lactating ewes were divided into four groups, fed hay and, according to a 4 · 4 Latin square design, supplied with 800 g/day of a commercial mixed concentrate feed (MCF) containing maize and soybean, or the same amount of isoprotein concentrates consisting of chickpea (CH), faba bean (FB), or pea (PE) mixed with barley. The ewes ingested more of the concentrates with legume grains than the MCF (702, 702, 678 vs 587 g/day DM for CH, FB, PE and MCF; P 0.001). Compared with CH, FB and PE resulted in greater (P 0.05) milk yield (710, 718 vs 654 g/day for FB, PE and CH, respectively), and led to a greater (P 0.05) efficiency of dietary protein utilisation for milk casein synthesis (94, 97 vs 87 g casein/kg crude protein intake for FB, PE and CH, respectively), whereas MCF resulted in intermediate levels of milk yield (677 g/day) and milk casein/crude protein intake (88 g/kg). Chickpea increased the milk content of trans-vaccenic and rumenic acids in comparison with FB and PE and, similarly to MCF, increased the milk content of linoleic acid, as well as total unsaturated fatty acids (24.3, 23.9 vs 17.2, 16.8 g/100 g fatty acid methyl esters for MCF, CH, FB and PE; P 0.001), thereby improving the potential health-promoting index. Legume grains can replace soybean in diets of dairy ewes, as they do not adversely affect milk yield and composition.

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Section: Milk Fatty Acid Compositionsupporting

confidence: 62%

Legume grain-based supplements in dairy sheep diet: effects on milk yield, composition and fatty acid profile

et al. 2016

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“…When pooling data from different experiments (Luna et al, 2005;Zhang et al, 2006a,b;Gómez-Cortés et al, 2008, 2009aBodas et al, 2010;Mele et al, 2006Mele et al, , 2007Mele et al, , 2011, a positive linear relationship (R 2 = 0.78) was found between the amount of supplemented dietary fat rich in linoleic and linolenic acids and the CLA content in milk (Figure 2). In particular, a milk CLA content higher than 2 g/100 g fat but lower than 3 g/100 g fat was reached when dietary lipid intake ranged between approximately 50 and 100 g/d, whereas a milk CLA concentration higher than 3 g/100 g fat (i.e., 3.44 g/100 g fat) was reached with a very high dose of soybean oil (140 g/d) associated with a high-concentrate diet.…”

Section: Effects Of Vegetable-oil Supplementationmentioning

confidence: 93%

Feeding strategies to design the fatty acid profile of sheep milk and cheese

et al. 2014

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-The majority of sheep milk produced in the world is transformed into cheese. Feeding is a major factor affecting the quality of sheep milk and, therefore, of sheep cheese. Because fat is the main compound of cheese, this review gives an update on the effects of feeding and nutrition on milk fat content and deeply discusses feeding strategies aimed at increasing the levels of healthy fatty acids (FA), such as conjugated linoleic acid and omega-3 FA, in milk and cheese in the human diet. In addition, the use of alternative feed resources such as by-products, aromatic plants, and phenolic compounds in the sheep diet and their effects on milk and cheese FA composition are also discussed. Among feeding strategies, grazing and the use of supplements rich in oils seem to be the best and the cheapest strategies to improve the nutritional value of the fatty acid profile in sheep cheese.

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“…Feeding starch-rich diets and 18-carbon PUFA to dairy cows increases the ruminal outflow of the trans-10 cis-12 isomer of CLA, which is known to downregulate key genes and transcription factors involved in lipid metabolism in the mammary gland, such as ACACA, FASN or SREBF1 (Bernard et al, 2008;Bauman et al, 2011). Although dairy ewes are not prone to this type of diet-induced MFD (Mele et al, 2006;Castro-Carrera et al, 2015), they are sensitive to the antilipogenic activity of trans-10 cis-12 18:2, which also appears to be mediated by changes in mammary gene expression in this species Ticiani et al, 2016). However, the causes and mechanisms underlying marine lipid-induced MFD (affecting both dairy cows and ewes) have not been well defined yet (Ahnadi et al, 2002;Bichi et al, 2013;Toral et al, 2016a).…”

Section: Introductionmentioning

confidence: 99%

mRNA abundance of genes involved in mammary lipogenesis during fish oil- or trans-10,cis-12 CLA-induced milk fat depression in dairy ewes

Toral

Hervás

Belenguer

et al. 2017

Journal of Dairy Science

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Effect of forage/concentrate ratio and soybean oil supplementation on milk yield, and composition from Sarda ewes

Abstract: -Sixteen lactating Sarda ewes were fed four diets differing in the forage/concentrate ratio (two diets 75/25, two diets 60/40, on a DM basis) and in soybean oil supplementation (two diets with 100 g·d

Cited by 58 publications

References 39 publications

Legume grain-based supplements in dairy sheep diet: effects on milk yield, composition and fatty acid profile

Legume grain-based supplements in dairy sheep diet: effects on milk yield, composition and fatty acid profile

Feeding strategies to design the fatty acid profile of sheep milk and cheese

mRNA abundance of genes involved in mammary lipogenesis during fish oil- or trans-10,cis-12 CLA-induced milk fat depression in dairy ewes

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