Veterinary Archives, Vol. 92 No. 4, 2022.
Original scientific paper
https://doi.org/10.24099/vet. arhiv.1752
The effects of FASN and DGAT1 gene polymorphism on colostrum and milk fatty acid composition of Charolais cows and growth in Charolais calves
Maja Maurić Maljković
orcid.org/0000-0002-0408-215X
; Department of Animal Breeding and Livestock Production, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Tomislav Mašek
; Department of Animal Nutrition and Dietetics, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Marina Vranić
; Department of Field Crops, Forage and Grassland, Faculty of Agriculture, University of Zagreb, Croatia
Kristina Starčević
; Department of Chemistry and Biochemistry, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Abstract
Fatty acid composition of milk has become an important trait in dairy production, but there has not been a large amount of research on milk fat composition in beef cows. The aim of this study was to evaluate the effects of polymorphisms in the fatty acid synthase (FASN) and acyl-CoA diacylglycerol acyltransferase (DGAT1) gene on milk and colostrum fatty acid composition, and their direct (calf) and indirect (cow/mother) relationships with calf birth weight and weight gain over 14 days. Eight Charolais cows and eight calves were genotyped using the PCR-RFLP method. The cows’ milk and colostrum fatty acid profiles and their calves’ weight at birth and 14 day weight gain were analysed. In the colostrum, cows with DGAT1 genotype KA had a significantly higher content of C4:0 and lower C10:0, and with FASN diplotype TW/AR a tendency for higher C14:0 and C16:0 colostrum FA content. In the milk, Charolais cows with diplotype TW/AR tended to have higher C14:1, C16:0 and C16:1, but lower C18:0 content. At the same time, no associations were found between DGAT1 genotypes and the fatty acid composition of milk. There were also no significant associations found between the studied SNPs and the calf’s birth weight and weight gain over 14 days, although calves with DGAT1 KA genotype tended to have higher birth weight.
Keywords
milk; colostrum; fatty acid; DGAT1; FASN; Charolais
Hrčak ID:
283820
URI
Publication date:
26.9.2022.
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