Annual ryegrass toxicity affects sheep and sometimes cattle and horses. Symptoms appear two days after entering the toxic zone or as late as 12 weeks, leading to death rates as high as 90 percent for sheep and 45 percent for cattle....

Except in calves under six months of age, in which the disease is unusual, acute bracken poisoning occurs in all ages of cattle, although the peak incidence is in young cattle aged between 1 and 3 years. ...

It often appears to be of sudden onset, the affected animal has difficulty in swallowing and may be anorexic, excessive salivation is often seen....

Border Leicester rams are used for mating with Merino ewes to breed the first-cross mothers that are so valuable for the production of prime lambs. ...

Booroola Lamb birthweight varies with the number of lambs born in the litter, from 3.9-4.8 kg for single lambs to 1.9-2.6 kg for quadruplets (2.9-3.7 kg and 2.2-3.1 kg for twins and triplets). ...

Bluefaced Leicester rams can weigh up to 110 kg and Bluefaced Leicester ewes up to 89 kg. At maturity and at the withers, rams are 90 cm tall and ewes 85 cm tall....

The Bleu du Maine is a large, prolific sheep, the most distinguishing feature of the breed is that both breeds are polled, bald, with a blue gray head, a very alert eye (giving a sharp look), and fairly thick skin....

Bighorn sheep are perhaps best known for head-on combat among males. Horn size is a symbol of rank, and the mass of the horns (up to 14 kg) is used to a man's best advantage when hitting his opponent at 20 miles per hour...

The Beulah Speckled Face is a breed of domestic sheep originating in the United Kingdom. Having been bred in the uplands of Wales for more than a hundred years, a breed society was officially formed in 1958. ...

The berrichon du Cher is a French sheep breed from Berry . It is a very old race, crossed with Merino around 18th century...