Raphanus raphanistrum
white weed, white charlock, wild charlock, cadlock, wild kale, wild turnip, jointed radish, jointed charlock
Stems are erect, branch, and range from 20-50cm tall. Stems are covered with hairs. Flowers yellow (or white), 4 petals, sometimes scented. The fruit is a segmented pod with a distinctive beak-like tip. The root is radish-like with a radish scent.
Brassica species (esp. white mustard), charlock (Sinapis arvensis), turnip weed (Rapistrum rugosum) or garden radish (Raphanus sativus)
Indigenous to Asia and the Mediterranean basin; worldwide distribution
S-methylcysteine sulphoxide (SMCO) - haemolysis, haematuria; Isothiocyanate-gastroenteritis; High sulphur levels can cause signs of copper or selenium deficiency, or cause direct problems such as polioencephalomalacia
Horses, rarely production animals (cattle, sheep) grazing on dense sward
Diarrhoea, anorexia, haematochesia, tenesmus
Haematuria, petechial haemorrhages on serosal surfaces, anemic carcass with dark-red kidneys and bladder full of port wine-coloured urine; serosanguinous fluid in thoracic cavity, pulmonary congestion, emphysema, oedema; gastrointestinal tact congestion with haemorrhage in the superficial mucosa
History, clinical signs, post mortem
Other causes of redwater (other brassicas, postparturient hematuria, bacillary hemoglobinuria). Drugs including sulfonamides, phenacetin, and paracetamol. Infection diseases causing sudden deaths. Other causes of gastroenteritis.
Symptomatic, antioxidants to prevent oxidative injury
Good; highly unlikely that animals would have adequate access to cause severe disease
Good pasture management; high quality hay
Tuesday, 22 February 2011
