Determination of milk fatty acids and some phenotypic characters affecting total milk fat in dairy cows with multiple linear regression

Authors : Ufuk KAYA, Hüseyin ÖZKAN, Murat YAZLIK, Güven GÜNGÖR, Baran ÇAMDEVİREN, İrem KARAASLAN, Sevda DALKIRAN, Hasan Hüseyin KEÇELİ, Aytaç AKÇAY, Akın YAKAN

Pages : 119-126

Doi:10.33188/vetheder.1206837

View : 36 | Download : 46

Publication Date : 2023-06-15

Article Type : Research Paper

Abstract :This study aimed to determine the effect of milk fatty acid composition, breed, and pregnancy status on total milk fat in dairy cows. The study was conducted with a total of 400 milk samples collected form healthy Holstein and Simmental cows. Milk samples were collected for total milk fat and fatty acid analysis. To investigate the effects of milk fatty acids, breed and pregnancy status on total milk fat, multiple linear regression analysis was performed. As a result of the analysis, breed, pregnancy status, C11:0, C14:0, C18:0, C18:1 ω9 and C18:3 ω6 were found to be statistically significant insert ignore into journalissuearticles values(p<0.05);, while the C18:3 ω3 was nearly significant insert ignore into journalissuearticles values(p=0.069);. Also, Holstein cows, C11:0 and C18:0 were found to have a positive effect, while pregnant cows, C14:0, C18:1 ω9, C18:3 ω3, and C18:3 ω6 had a negative effect. The multiple explanatory coefficient of the regression model insert ignore into journalissuearticles values(R2); was 0.238. In the light of all these findings, it was thought that milk fat could be increased with different breeding protocols. Moreover, it is suggested that the regression model can be improved further by adding different variables in future studies.
Keywords : Süt sığırı, Süt yağı, Süt yağ asitleri, Gebelik, Regresyon