← Elaine Ingham · Research and publications
The move to grazing leaves a trace in milk
Two neighbouring farms allowed researchers to follow milk changes as one herd moved towards organic management.
Study published:
Following the transition
Milk from neighbouring herds was compared for 12 months. One herd received a conventional ration indoors, while the other was transitioning to organic management with pasture access. [1]
Changes in composition
After dietary adaptation, milk from the transitioning herd contained more alpha-linolenic acid. Protein profiles were similar. Some fatty acids and volatile compounds changed during monitoring. [1]
Dietary change takes time
A feeding change follows a trajectory. Tracking herd adaptation and milk quality helps farmers plan a transition alongside production and pasture condition.
From pasture to product
The study links feed management with specific milk characteristics. For a Greek farm, a useful next step is seasonal recording based on local vegetation and the farm’s own ration.
Sources and references
- Tunick, M.H., Paul, M., Ingham, E.R., Karreman, H.J. & Van Hekken, D.L. (2015). Differences in milk characteristics between a cow herd transitioning to organic versus milk from a conventional dairy herd. International Journal of Dairy Technology, 68(4), 511–518. DOI: 10.1111/1471-0307.12255 Original publication and study record