AI Article Synopsis
- The study aimed to analyze the chemical composition and lipid profile of colostrum and milk from purebred Quarter Horse mares, dividing the mares into groups based on age, birth order, and lactation stage.
- Samples of colostrum and milk were collected at specific postpartum times and analyzed for protein, lactose, and lipid content, revealing that colostrum had high protein and low lactose levels compared to other breeds.
- Findings indicated that while the mares' age didn't affect milk composition, variations in lactation stage and birth order did influence the chemical makeup of the milk, though the nutritional quality remained consistent throughout.
Article Abstract
The objective of this study was to characterize the chemical composition and lipid profile of colostrum and milk of purebred Quarter Horse mares. Thirty-four (34) purebred mares were selected, which were then separated into groups according to age, birth order and lactation stage. Colostrum samples were collected in the first six hours after delivery and milk samples from the 7th postpartum day, with intervals of 14 days until the end of lactation. The samples were refrigerated and sent to the Milk Laboratory of the University (Laboleite-UFRN), where they were analyzed for chemical composition. Colostrum was assessed by refractometry. The lipid profile was determined by gas chromatography through a separation of methyl esters. The data were tabulated and subjected to descriptive statistics and analysis of variance by the F-Test, and the groups were compared by the Tukey test using a significance level of 5%. There was high protein content and reduced lactose content for the colostrum of the Quarter Horse mares, differing from other breeds. The milk composition was not influenced by the mares' age. However, variations in the lactation stage and in the birth order of the Quarter Horse mares altered the milk's chemical composition. There is variation in the lipid composition of milk according to the lactation stage, without changing the characteristic profile of the mares' milk or diminishing the nutritional quality of the lipid fraction.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7489553 | PMC |
| http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0238921 | PLOS |
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