Effect of Calcareous Marine Algae Buffer on High-Producing Dairy Cows during Peak Lactation.

The aim of the study was to investigate the effect of calcareous marine algae ()-based rumen content buffer (CMA) included in concentrated feed within total mixed ration (TMR), fed to 34 peak lactation (87-144 days in milk) Holstein dairy cows, randomized into two groups (group A, = 17; group B, = 17), wearing collars with accelerometers, and housed a in barn with automatic feed-weigh troughs. During the first phase P1, group A received TMR with CMA (TMR-E) and group B was fed TMR without the buffer (TMR-C). For P2, the treatments in the groups were exchanged.