Beware of the risk of grazing Lupin stubbles
- Length of time since harvest. The risk will increase as time passes from harvest particularly if conditions are wet and humid.
- Stocking density. Increased risk with increased stocking density.
- The amount of lupin grain left in the paddock. Less grain in the paddock results in more stems consumed and increased risk.
- The age and class of the stock grazing. Weaners are more susceptible than adults. Late pregnant and early lactation cows are more susceptible.
- If leopard spotting (see picture) is seen on the stem the pods and seeds are most likely also affected and the risk of lupinosis is high. Grazing should be avoided.
- Grazing pastures or cropping paddocks containing stubbles from the previous year is a high risk as stock often seek roughage when grazing lush crops and pastures
- Feeding greater than 10% of infected seed as part of a ration.
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