Housing. Many dairy cattle are housed during the winter period, when grass is not growing. Some herds may be housed all year-round (known as âzero-grazingâ).The RSPCA does not support systems housing dairy cattle all year round.Two types of housing system are generally used:ousing. Many dairy cattle are housed during the winter period, when grass is not growing. Some herds may be housed all year-round (known as âzero-grazingâ).
annulus â(plural annuluses or annuli). 1  A ring-or donut-shaped area or structure. ( 2 geometry) The region in a plane between two concentric circles of different radius. ( 3 topology) Any topological space homeomorphic to the region in a plane between two concentric circles of different radius.
The tendinous ring, also known as the annulus of Zinn, is the common origin of the four rectus muscles (extraocular muscles). The medial portion of the ring also encompasses the optic foramen through which the optic nerve and ophthalmic artery pass.