Association of Single Nucleotide Polymorphism in the DGAT1 Gene with the Fatty Acid Composition of Cows Milked Once and Twice a Day

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dc.citation.issue3
dc.citation.volume14
dc.contributor.authorSanjayaranj I
dc.contributor.authorMacGibbon AKH
dc.contributor.authorHolroyd SE
dc.contributor.authorJanssen PWM
dc.contributor.authorBlair HT
dc.contributor.authorLopez-Villalobos N
dc.coverage.spatialSwitzerland
dc.date.accessioned2024-06-20T03:17:04Z
dc.date.available2024-06-20T03:17:04Z
dc.date.issued2023-03-21
dc.description.abstractA single nucleotide polymorphism (SNP) rs109421300 of the diacylglycerol acyltransferase 1 (DGAT1) on bovine chromosome 14 is associated with fat yield, fat percentage, and protein percentage. This study aimed to investigate the effect of SNP rs109421300 on production traits and the fatty acid composition of milk from cows milked once a day (OAD) and twice a day (TAD) under New Zealand grazing conditions. Between September 2020 and March 2021, 232 cows from a OAD herd and 182 cows from a TAD herd were genotyped. The CC genotype of SNP rs109421300 was associated with significantly (p < 0.05) higher fat yield, fat percentage, and protein percentage, and lower milk and protein yields in both milking frequencies. The CC genotype was also associated with significantly (p < 0.05) higher proportions of C16:0 and C18:0, higher predicted solid fat content at 10 °C (SFC10), and lower proportions of C4:0 and C18:1 cis-9 in both milking frequencies. The association of SNP with fatty acids was similar in both milking frequencies, with differences in magnitudes. The SFC10 of cows milked OAD was lower than cows milked TAD for all three SNP genotypes suggesting the suitability of OAD milk for producing easily spreadable butter. These results demonstrate that selecting cows with the CC genotype is beneficial for New Zealand dairy farmers with the current payment system, however, this would likely result in less spreadable butter.
dc.description.confidentialfalse
dc.edition.editionMarch 2023
dc.format.pagination767-
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/36981037
dc.identifier.citationSanjayaranj I, MacGibbon AKH, Holroyd SE, Janssen PWM, Blair HT, Lopez-Villalobos N. (2023). Association of Single Nucleotide Polymorphism in the DGAT1 Gene with the Fatty Acid Composition of Cows Milked Once and Twice a Day.. Genes (Basel). 14. 3. (pp. 767-).
dc.identifier.doi10.3390/genes14030767
dc.identifier.eissn2073-4425
dc.identifier.elements-typejournal-article
dc.identifier.issn2073-4425
dc.identifier.number767
dc.identifier.piigenes14030767
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/69948
dc.languageeng
dc.publisherMDPI (Basel, Switzerland)
dc.publisher.urihttps://www.mdpi.com/2073-4425/14/3/767
dc.relation.isPartOfGenes (Basel)
dc.rights(c) 2023 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectDGAT1
dc.subjectSNP genotype
dc.subjectdairy cattle
dc.subjectfatty acids
dc.subjectmilking frequency
dc.subjectFemale
dc.subjectCattle
dc.subjectAnimals
dc.subjectMilk
dc.subjectFatty Acids
dc.subjectLactation
dc.subjectPolymorphism, Single Nucleotide
dc.subjectDiacylglycerol O-Acyltransferase
dc.titleAssociation of Single Nucleotide Polymorphism in the DGAT1 Gene with the Fatty Acid Composition of Cows Milked Once and Twice a Day
dc.typeJournal article
pubs.elements-id460814
pubs.organisational-groupOther
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