Título : Inclusion of pasture in dairy cow’s diet: fatty acid profile of Danbo-type cheese
Autor(es) : Casarotto, G.
Bonfiglio, C.
López, A.
Vieitez, I.
Britos, A.
Repetto, J. L.
Carro, S.
Cajarville, C.
Fecha de publicación : jul-2023
Tipo de publicación: Documento de conferencia
Versión: Publicado
Publicado en: American Dairy Science Association Annual Meeting
Areas del conocimiento : Ciencias Agrícolas
Producción Animal y Lechería
Otros descriptores : CLA
cheese fat
dairy products
Resumen : The aim was to evaluate the impact of partially replacing a TMR with fresh alfalfa in lactating cows on the Danbo cheese’s fatty acid profile (FA). In a cross-over design experiment, twelve cows were randomly assigned to one of two feeding strategies: T1) 100% TMR and T2) 60% TMR + fresh alfalfa grazed without limit of quantity. Each experimental period lasted 26 days. After 21 days of adaptation, the milk of the morning milking was collected from each cow and a cheese/cow was made the same day (n=12 cheeses/period). After 90 days of maturation, the FA profile was determined by gas chromatography. Data were analyzed by ProcMixed and means separated by LSMeans (SAS®). There were differences between the periods, but the sequence of treatment application did not influence the study. Even if SFA:UFA ratio did not differ between groups, the content of Stearic acid (18:0) decreased in T2. This acid is one of the main SFA in dairy products, often associated with cardiovascular diseases in humans. The levels of Rumenic (CLA, 18:2 c9, t11), Vaccenic (TVA, 18:1 t11), and α-Linolenic acid (18:3 c9, c12, c15), increased in T2, all of them with health benefits. Moreover, total trans-FA was raised by almost 20% in T2. In summary, these findings indicate that partially replacing a TMR for fresh pasture in cow’s diet could be an option to increase the contribution of FA with beneficial repercussions in human health, such as anticarcinogenic effects provided especially by CLA.
URI / Handle: https://hdl.handle.net/20.500.12381/3503
Recursos relacionados en REDI: https://hdl.handle.net/20.500.12381/3502
https://hdl.handle.net/20.500.12381/3501
https://hdl.handle.net/20.500.12381/3500
https://hdl.handle.net/20.500.12381/3505
ISSN: 1525-3198
Institución responsable del proyecto: Universidad de la República. Facultad de Veterinaria
Financiadores: Agencia Nacional de Investigación e Innovación
Ministerio de Ganadería, Agricultura y Pesca
Instituto Nacional de Investigación Agropecuaria
Identificador ANII: FSA_1_2018_1_152588
Nivel de Acceso: Acceso abierto
Licencia CC: Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional. (CC BY-NC-ND)
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