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Organization of the feeding periods during study years 2014 to 2016, including the acclimatization periods (i.e., a one week period during which the high-energy (HE) diet was built up gradually to the full ration), the number of weeks during which the diet was fed and the hay-only periods in between, with the corresponding months. The ponies in the control (maintenance diet) and high-energy (HE; diet equating to 200% of net energy requirements) groups are described per study year.
