(cultivated flax, linseed). A member of the plant family LINACEAE.
Annual cultivated plant/crop, with oil-bearing seeds (small, flat, dark brown
with a depression around the edges).
Animals most affected
Cattle, sheep, (pigs, horses).
Ingestion of the oil-cake.
Contains a cyanogenetic heteroside, linaroside. This is found in the seed cake which
may contain varying amounts of HCN, ranging from 50 to 860 mg/kg.
The seedcake is made from flour and distributed in a wet state. However, the cake
is more toxic wet than dry. In the wet state, hydrolysis of the heteroside is greater
and the reaction is more complete.
Toxic oral doses:
do not give animals more than 400 g oilcake/100 kg body weight per day;
use only oilcake containing low quantities of UCN (< 100 mg/kg).
Onset of clinical signs may he immediate
sudden death in 1-2 minutes preceded by a few convulsions.
If the quantities ingested are lower
tremor, decubitus, convulsions;
possibility of death within several minutes from asphyxia.
If the dose ingested is minimal
recovery in several hours, without sequelae
severe congestion and cyanosis of the mucosae.
Often not possible as the onset of clinical effects is so rapid. The following may
iv sodium hyposulphite, 3 g/1 00 kg body weight;
iv sodium nitrite (10% solution), 15 ml/ 100 kg body weight;
iv dicobalt edetate (Kelocyanor), 2-25 mg/kg body weight.