Sheep Ewe Body Condition: Nutritional Welfare Throughout the Production Cycle

Managing ewe body condition throughout the production year is essential for welfare, with both overly thin and obese ewes experiencing significant health and welfare problems.

Key Facts

Body condition scoring in sheep uses a 1-5 scale, with 1 being emaciated and 5 being grossly obese
Target body condition score at tupping is 3-3.5 for most ewe types
Thin ewes at lambing have higher incidences of twin lamb disease, weak lambs, and poor colostrum production
Overfat ewes at lambing have difficult births and higher lambing mortality
Energy demand increases dramatically in the final six weeks of pregnancy, when lamb growth accelerates

Welfare Considerations

Ewe body condition has direct and significant welfare consequences. Very thin ewes approaching lambing are prone to pregnancy toxemia (twin lamb disease), which causes profound neurological disturbance, collapse, and death without treatment. Thin ewes produce less colostrum, compromising lamb immunity and survival. Overfat ewes commonly suffer dystocia from oversized lambs and fatty infiltration of the pelvis, causing difficult and painful births. Nutritional deprivation in late pregnancy causes fetal programming effects that reduce lamb performance, welfare, and survival. Monitoring body condition is therefore both an economic and a fundamental welfare obligation.

What You Can Do

Implement regular body condition scoring throughout the ewe flock production cycle
Work with a veterinarian or nutritionist to develop appropriate feeding programs for each production stage
Ensure adequate supplementary feeding in the final six weeks of pregnancy
Address poor body condition early enough to allow condition improvement before critical periods
Include body condition monitoring in your annual flock health and welfare planning