Department of Animal and Range Sciences, New Mexico State University, P. O. Box 30003, Las Cruces, NM 88003, USA.
Department of Animal and Range Sciences, New Mexico State University, P. O. Box 30003, Las Cruces, NM 88003, USA.
Vet Clin North Am Food Anim Pract. 2019 Jul;35(2):365-378. doi: 10.1016/j.cvfa.2019.02.010.
Stimuli experienced in utero can have a lasting impact on livestock growth, reproduction, and performance. Variations in environment, production system, and management strategies lead to discrepancies in the literature regarding how specific treatments influence animal performance. Studies comparing the influence of maternal undernutrition to well-fed counterparts typically result in decreased productivity of offspring. Via adaptation to nutritional or environmental stressors, dams may develop mechanisms to ensure proper nutrient supply to the fetus. It appears nutrient deprivation must be severe for consistent results. Potential mechanisms for altered performance in grazing systems and overnutrition settings are discussed.
家畜在子宫内经历的刺激会对其生长、繁殖和性能产生持久影响。环境、生产系统和管理策略的变化导致文献中关于特定处理如何影响动物性能的差异。将营养不良的母体与营养良好的母体进行比较的研究通常会导致后代的生产力下降。通过适应营养或环境胁迫，母体可能会发展出确保胎儿适当营养供应的机制。似乎只有在严重的营养缺乏情况下才会出现一致的结果。还讨论了放牧系统和营养过剩环境中性能改变的潜在机制。
