Impact of dietary regime on the metabolomic profile of bovine buttermilk and whole milk powder.
Metabolomics
; 20(5): 93, 2024 Aug 03.
Article
in En
| MEDLINE
| ID: mdl-39096405
ABSTRACT
INTRODUCTION:
Bovine milk contains a rich matrix of nutrients such as carbohydrates, fat, protein and various vitamins and minerals, the composition of which is altered by factors including dietary regime.OBJECTIVES:
The objective of this research was to investigate the impact of dietary regime on the metabolite composition of bovine whole milk powder and buttermilk.METHODS:
Bovine whole milk powder and buttermilk samples were obtained from spring-calving cows, consuming one of three diets. Group 1 grazed outdoors on perennial ryegrass which was supplemented with 5% concentrates; group 2 were maintained indoors and consumed a total mixed ration diet; and group 3 consumed a partial mixed ration diet consisting of perennial ryegrass during the day and total mixed ration maintained indoors at night.RESULTS:
Metabolomic analysis of the whole milk powder (N = 27) and buttermilk (N = 29) samples was preformed using liquid chromatography-tandem mass spectrometry, with 504 and 134 metabolites identified in the samples respectively. In whole milk powder samples, a total of 174 metabolites from various compound classes were significantly different across dietary regimes (FDR adjusted p-value ≤ 0.05), including triglycerides, of which 66% had their highest levels in pasture-fed samples. Triglycerides with highest levels in pasture-fed samples were predominantly polyunsaturated with high total carbon number. Regarding buttermilk samples, metabolites significantly different across dietary regimes included phospholipids, sphingomyelins and an acylcarnitine.CONCLUSION:
In conclusion the results reveal a significant impact of a pasture-fed dietary regime on the metabolite composition of bovine dairy products, with a particular impact on lipid compound classes.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Milk
/
Metabolomics
/
Buttermilk
/
Animal Feed
Limits:
Animals
Language:
En
Journal:
Metabolomics
Year:
2024
Document type:
Article