Sheep Nutrition and Welfare: Body Condition Management Through the Production Cycle

Nutritional welfare in sheep is fundamental to health, reproduction, and productivity. Managing body condition through key production stages prevents welfare problems associated with both under- and over-nutrition.

Key Facts

Body condition scoring (BCS) in sheep uses a 1-5 scale from emaciated to obese, with production targets varying by stage
Pre-lambing BCS targets of 3-3.5 for lowland ewes prevent dystocia, twin lamb disease, and poor colostrum production
Thin ewes are more susceptible to pregnancy toxaemia (twin lamb disease) as energy demands of multiple fetuses exceed nutritional intake
Flushing (increasing nutrition before mating) improves ovulation rate and litter size but requires careful management
Lactation is the period of highest nutritional demand - inadequate nutrition causes rapid condition loss and reduces milk production
Over-fat ewes are at higher risk of dystocia and vaginal prolapse at lambing, creating welfare problems for ewe and lambs
Feed budgeting and BCS monitoring throughout the year prevents the crisis management that characterizes poor nutritional welfare

Welfare Considerations

Sheep nutritional welfare requires longitudinal thinking: the ewe's body condition at lambing is determined by nutritional management through pregnancy, and her condition through lactation is determined by pre-lambing reserves and in-lactation feeding. Welfare failures in nutritional management are often visible only at the point of crisis - the emaciated ewe unable to stand at lambing, the twin lamb disease case, the ewe with poor milk production and failing lambs. These crises are preventable through regular body condition monitoring and feeding adjustment throughout the year. The farmers who prevent nutritional welfare emergencies are those who BCS regularly and make proactive feeding decisions before animals lose condition, rather than waiting until crisis is evident.

What You Can Do

Body condition score ewes at key production stages: weaning, mating, mid-pregnancy, and pre-lambing as a minimum
Adjust nutrition based on BCS, pregnancy scanning results, and body condition targets for your production system
Implement pregnancy scanning to identify singles, twins, and triplets and feed appropriately to each group
Monitor lambs for signs of poor nutrition from ewes: failure to thrive, weak suck, and poor growth rates
Work with your vet and nutritionist to develop a feed budgeting approach that matches nutritional supply to demand throughout the year