In order to study eventual differences in the composition of milk from cows fed with or without silage bulk tank samples (2 milkings) were analysed for different milk components. During the winter period 18 commercial dairy farms with or without silage feeding and during the summer period 8 and 6 farms, respectively, were sampled. All farms had comparable production conditions (e.g. same region, similar husbandry conditions and milk production levels). There was no significant difference of the gross milk composition between the silage an non silage groups.In both periods concentrations of conjugated linoleic acids (CLA) and omega-3 fatty acids were slightly lower in milk from cows fed with silage. Milk from farms feeding silage had slightly higher concentrations of saturated fatty acids and lower concentrations of unsaturated fatty acids. In addition, milk fat from these farms tended to be more susceptible to fat damage.Vitamin and mineral contents were nearly identical for both groups and no sensory differences could be found. During the winter period Clostridium tyrobutyricum spore counts were significantly higher in milk from farms feeding silage.
Plants and microorganisms can perceive and respond to sound waves. In a review of the literature, Agroscope analysed various publications on this topic. The studies show that sound can lead to positive effects on physiology in the form of improved growth, development and disease resistance.
The war in Ukraine, dry spells and droughts followed by heavy rainfall and flooding are major challenges for our food systems. But the problems that they bring to light are nothing new – and solutions are already to hand.
Biogenic amines in foods represent a health risk. Researchers from Agroscope and INRAE investigated the formation of these undesirable substances in raclette cheeses by the bacterium Morganella morganii.