Composition and fatty acid profile of milk from cows fed diets supplemented with raw and n-3 PUFA-enriched fish oil.
Sci Rep
; 14(1): 10968, 2024 05 14.
Article
en En
| MEDLINE
| ID: mdl-38745072
ABSTRACT
Dietary supplementation of ruminants with fish oil is a strategy for favorably modifying the fatty acid composition of milk fat. This study investigated the effect of supplementing cows' diet with fish oil after low-temperature crystallisation (LTC-FO) compared to its raw form (FO) on milk yield, milk components (fat, protein, and lactose), and milk fatty acid profile. Twenty-four mid-lactating multiparous Polish Holstein-Friesian cows fed a total-mix ration were randomly assigned to two homogeneous groups (n = 12 cows each) and supplemented with LTC-FO or FO at 1% of dry matter. Milk samples were collected on days 14 and 30 of the 30-day experiment. No significant differences between the groups in terms of milk yield, milk protein, and lactose content were found, however, the fat yield and content decreased in the LTC-FO group. Milk fat from cows in the LTC-FO group contained significantly higher levels of C181 trans-11, C182 cis-9, trans-11, C183n - 3, C205, and C226, and lower levels of saturated fatty acids compared to the FO group (p < 0.05). Therefore, LTC-FO may be a more efficient feed additive than FO and may serve as a practical way to modify the fatty acid composition of milk fat.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Lactancia
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Aceites de Pescado
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Ácidos Grasos Omega-3
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Suplementos Dietéticos
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Leche
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Ácidos Grasos
Idioma:
En
Revista:
Sci Rep
Año:
2024
Tipo del documento:
Article