Naslov
Milk production and fatty acid composition in Simmental cows fed with unprotected sunflower oil

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

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

Izvornik
Revista Romana de Medicina Veterinaria 17(Suppl.2) / Constantinescu, Veronica - Bukurešt : Asociatia Generala a Medicilor Veterinari din Romania, 2007, 37-37

Skup
8th Middle European Buiatrics Congress

Mjesto i datum
Gura Humorului, Rumunjska, 05.06.2007. - 08.06.2007

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
sunflower oil; milk; fatty acids; Simmental cows

Sažetak
The aim of the study was to evaluate the effect of the unprotected sunflower oil in the diet on the milk production, and changes in milk composition. Ten multiparous Simmental cows in mid-lactation (78 ± ; ; ; 40 DIM) were assigned to change over feeding trial, over 5 weeks research period. Treatment was the basal diet (WSO) and diet supplemented with unprotected sunflower oil (SO). The basal diet consisted of the 26% corn silage, 33% perennial ryegrass haylage, and 41% concentrate in DM. In SO diet 200g/cow/day of unprotected sunflower oil was mixed in concentrate mixture. The milk production and production of milk components did not change significantly during the trial, whereas milk fatty acid composition altered significantly. Short chain and medium chain fatty acids decreased for 0.94%, and 6.42%, respectively, and long chain fatty acid increased for 7.76%. The rumenic (cis-9, trans-11 CLA), linoleic acid (cis-9, cis-12 C 18:2) and stearic acid increased significantly during the treatment, and palmitic, myristic and partially lauric acid significantly decreased over the course of study. We could conclude that unprotected sunflower oil efficiently modified the fatty acid composition of Simmental cows’ milk with no influence on the milk production and the majority of standardly analysed milk components.

Izvorni jezik
Engleski

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