Horse delicacy Nikolay Sverchkov (1817-1898)

The picture has something of this: mammal, cavalry, farm, two, animal, livestock, portrait, horse, nature, grass, pasture, mare, agriculture, field, seated, outdoors, grassland, hayfield.
Perhaps it’s a painting of two white horses and a black horse standing next to each other in a grassy area with onions and carrots in the foreground.