Blackleg seldom affects cattle older than 2 years of age, most likely due to immunity induced by vaccines or natural exposure. However, sporadic cases do occur in cattle older than 2 years and are often associated with the reuse of needles for multiple injections.lackleg seldom affects cattle older than 2 years of age, most likely due to immunity induced by vaccines or natural exposure. However, sporadic cases do occur in cattle older than 2 years and are often associated with the reuse of needles for multiple injections.
Afton: a river in Scotland, for my nature theme. Afton: a Swedish word that means afternoon or evening, for Bjorkâs Scandinavian feel. Afton: a name ending with an ân,â for my weird enjoyment of names ending with ânâ. And âSweet Aftonâ, one of our favorite songs.
This interesting patronymic name is English in origin and derives from 'Eda', a Middle English short form of the female given name Edith, from the Olde English 'Eadgyo which means 'prosperity battle'. Edson would thus be, 'son of Eda'. Although in this form the name is now obsolete, it was common until the late 17th Century.