The experiment was carried out on 5 horses of Konik Polski breed staked on a meadow for 16 h a day the period from 9th - 16th June 1985 in Raków near Wrocław. The grazing area was 133 m² per horse. Prior to and following grazing, fodder samples were collected from each site to determine the amount of forage consumed daily and its nutritive value. In the last 6 days, feces from the horses examined were sampled and analysed. Digestibility coefficient of green forage was determined by tracer mothod applying insoluble crude ash as an indicator. The horses worked every day for 1-1,5 h riding with a rider or harnessed. Analysing the feed left, it can be said that the horses consumed more plants richer in protein, fibre, calcium and phosphorus whereas the ratio of the consumed fodder to the fodder left on the pasture was on average 1,53 : 1. Digestibility indices for crude protein, crude fibre and nitrogenfree extracts exoeeded 50%. The amount of green fodder consumed by the horses on green pasture for 16 h daily satisfied their requirements in 104%.
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