- Outbreaks of Sheep-Scab in Great Britain, 1877-1905.
Sheep-scab is a loathsome skin disease due to an acarian parasite.
C. 70) revoked all former acts, and defined disease to mean cattle plague, pleuro-pneumonia, foot-and-mouth disease, sheep-pox, sheep-scab and glanders, together with any disease which the Privy Council might by order specify.
Similar spraying is recom- (From a specimen in the British Museum.) mended for pear-leaf blister Pear Scab (Fusicladium pyrinum).
Pear scab is caused by a parasitic fungus, Fusicladium pyrinum, very closely allied and perhaps merely a form of the apple scab fungus, F.
The tubers frequently show scurfy or scab-like spots upon their surface, thus greatly depreciating their value for market purposes.
The fungus, Sorosporium scabies, which is the cause of the scab, does not penetrate into the flesh of the tuber, nor detract from its edible properties.
It is compulsory on owners to notify the authorities as to the existence of scab amongst their sheep. By the Diseases of Animals Act (1903) powers to prescribe the dipping of sheep, irrespective of the presence or otherwise of sheep scab, were conferred upon the Board of Agriculture.
A Scab Act is in force, and is stringently carried out by government inspectors with most satisfactory results.
These become brown, finally blackish and greatly contorted until a large scab is formed on the developing tuber, whence the name by which the disease is known - "black scab."
It is chiefly in the " flying " flocks and not in the breeding flocks that the disease is rife, and it is so easily communicable that a drove of scab-infested sheep passing along a road may leave behind them traces sufficient to set up the disorder in a drove of healthy sheep that may follow.