Shearing Pregnant Ewes Earlier May Boost Lamb Birth Weight and Survival, SDSU Research Shows

New research from South Dakota State University suggests that timing of shearing in pregnant ewes can influence lamb birth weight and survivability. The study found that ewes shorn at day 50 of gestation produced lambs that were larger and heavier at birth compared to those shorn after day 100. This early shearing exposes ewes to a limited period of cold stress, which appears to stimulate fetal growth. The findings are significant for sheep producers, as higher birth weights are often linked to better lamb survival rates, especially in harsh weather conditions. By adjusting shearing schedules, farmers could potentially improve flock productivity and reduce lamb mortality. The research underscores the importance of management practices during pregnancy and offers a practical, low-cost strategy for enhancing lamb outcomes. Further studies may explore the underlying physiological mechanisms and optimal timing for different breeds and climates.