Invited review: impact of specific nutrient interventions during mid-to-late gestation on physiological traits important for survival of multiple-born lambs.

摘要: Abstract To improve production efficiency, the sheep meat industry has increased flock prolificacy. However, multiple-born lambs have lower birth weights, mortality and reduced growth rate compared with single-born lambs. Lamb is a major issue for livestock farming globally solutions are required to increase survival realise value of fecundity. Nutrition during gestation can influence maternal–foetal placental nutrient transfer thus foetal organ/tissue development, as well postnatal productivity. This review covers challenges opportunities associated prolificacy, highlights gaps in our knowledge identifies some how targeted intervention specific nutrients mid-to-late pregnancy may lamb productivity focus on pasture-based systems. time frame was selected strategies short-time windows post-pregnancy scanning before lambing high-risk groups (e.g. triplets) likely be most practical economically feasible options extensive