Different conditions during confinement in pasture-based systems and feeding systems affect the fatty acid profile in the milk and cheese of holstein dairy cows

GRILLE PEÉS, LUCÍA DORA - ESCOBAR, DANIELA - MÉNDEZ, MARÍA NOEL - ADRIEN, MARÍA DE LOURDES - OLAZÁBAL, LAURA - RODRÍGUEZ, VÍCTOR - PELAGGIO ETTLIN, RONNY - CHILIBROSTE, PABLO - MEIKLE, ANA - DAMIÁN, JUAN P.

Resumen:

Pasture-based systems have advantages compared to confined systems, such as a higher proportion of beneficial milk fatty acids for their consumers. However, in mixed systems (grazing + total mixed ration), cows are more exposed to external climatic conditions. Due to climate change (high temperature or heavy rains), cows spend more time in confinement facilities where supplementation is offered, mainly in intensive mixed systems (high stocking rate). Therefore, the conditions of the facility during their confinement acquire great importance. To our knowledge, no studies have evaluated how the different facility conditions during confinement in a mixed system affect the fatty acid profiles in milk and cheese. The objective of this study was to compare the fatty acid profiles between mixed systems with different conditions during confinement (compost-bedded pack barns vs. outdoor soil-bedded pen) and mixed systems and confinement systems (100% total mixed ration) in a compost-bedded pack barns. In conclusion, the compost-bedded pack barns during confinement in a mixed system ensued a better milk quality (a higher percentage of Omega 3 (n-3) and C18:3 in the milk) compared to the outdoor soil-bedded pen. However, the fatty acid profiles in the milk, pooled milk (MilkP), and cheese were affected to a greater extent by the feeding management than by controlling the environment during the confinement.


Detalles Bibliográficos
2023
LECHE
ALIMENTACIÓN
CLIMA
ANIMALES
PRODUCTOS LÁCTEOS
Inglés
Laboratorio Tecnológico del Uruguay
Catálogo digital del LATU
https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32694
Acceso abierto
CC BY