In determining whether the manner in which a unit is being farmed is such as aforesaid regard shall be had, but without prejudice to the generality of the provisions of the last foregoing paragraph, to the following:—
(a) the maintenance of permanent grassland (whether meadow or pasture) properly mown or grazed and in a good state of cultivation and fertility;
(b) the handling or cropping of the arable land, including the treatment of temporary grass, so as to maintain it clean and in a good state of cultivation and fertility;
(c) where the system of farming practised requires the keeping of livestock, the proper stocking of the holding;
(d) the maintenance of an efficient standard of management of livestock;
(e) as regards hill sheep farming in particular:
(i) the maintenance of a sheep stock of a suitable breed and type in regular ages (so far as is reasonably possible) and the keeping and management thereof in accordance with the recognised practices of hill sheep farming;
(ii) the use of lug, horn or other stock marks for the purpose of determining ownership of stock sheep;
(iii) the regular selection and retention of the best female stock for breeding;
(iv) the regular selection and use of tups possessing the qualities most suitable and desirable for the flock;
(v...