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Pregled bibliografske jedinice broj: 306174

Blood lipids and proportion of fatty acids, especially CLA in milk of Simmental cows fed with unprotected sunflower oil


Marenjak, Terezija Silvija; Poljičak-Milas, Nina; Delaš, Ivančica
Blood lipids and proportion of fatty acids, especially CLA in milk of Simmental cows fed with unprotected sunflower oil // Oils, Fats and Lipids: from Science to Applications / Amoneit, Frank (ur.).
Frankfurt: Euro Fed Lipid, 2007. (poster, međunarodna recenzija, sažetak, znanstveni)


Naslov
Blood lipids and proportion of fatty acids, especially CLA in milk of Simmental cows fed with unprotected sunflower oil

Autori
Marenjak, Terezija Silvija ; Poljičak-Milas, Nina ; Delaš, Ivančica

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Oils, Fats and Lipids: from Science to Applications / Amoneit, Frank - Frankfurt : Euro Fed Lipid, 2007

Skup
5th Euro Fed Lipid Congress

Mjesto i datum
Gothenburg, Švedska, 16-19.09.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Fatty acids; lipid profile; milk; cows; vegetable oil

Sažetak
The main objective of our research was to determine an effect of unrifined and unprotected sunflower oil on the fatty acid composition and blood lipid profile in Simmental cows. Ten Simmental cows in mid-lactation were appointed for changeover feeding trial over the 35-d period. Cows were allocated to basal diet (BD) ; 41% concentrate, 33% perennial ryegrass haylage, 26% corn silage in dry matter, or basal diet supplemented with 200g of unprotected sunflower oil (SO) per cow daily. The total blood cholesterol concentration increased significantly in SO diet (5.58 mmol/L vs. 4.58 mmol/L) and triacilglycerol concentration did not change between the treatments. The SO diet significantly and rapidly elevate ratio of cis-9, trans-11 CLA (1.25% vs. 0.80%) and linoleic acid (3.56% vs. 2.75%) in milk, and simultaneously significantly decrease palmitic acid ratio (25.14% vs. 29.99%). High individual variations in blood cholesterol concentration and milk CLA proportions were determined, especially after the introduction of sunflower oil in the diet. Highly positive correlation between the linoleic acid and CLA proportions were determined (r = 0.80), and negative correlation between the total blood cholesterol concentration and milk fat content, during the SO treatment, were observed. In conclusion, relative small quantity of unprotected high linoleic sunflower oil in the diet significantly modified the fatty acid composition of Simmental cows’ milk, with the individual differences in the response to the diet changes.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina



POVEZANOST RADA


Projekt / tema
053-0531854-1850 - Hranidbeno metaboličke osnove podizanja kvalitete animalnih namirnica (Nina Poljičak Milas, )
053-0531854-1866 - Antioksidansi u očuvanju zdravlja životinja i kvalitete animalnih namirnica (Suzana Milinković-Tur, )

Ustanove
Veterinarski fakultet, Zagreb