NSW Department of Primary Industries, Armidale Livestock Industries Centre, University of New England, Armidale, New South Wales 2351, Australia.
Department of Animal Science, Cornell University, Ithaca, NY 14853-4801, USA.
Vet Clin North Am Food Anim Pract. 2019 Jul;35(2):303-319. doi: 10.1016/j.cvfa.2019.02.008.
Maternal regulation of fetal development has consequences for growth and development of carcass tissues. Severely restricted fetal growth can reduce postnatal growth capacity, resulting in smaller-for-age animals that take longer to reach market weights but has little effect on feedlot efficiency or carcass and meat quality. Specific nutritional supplementation, particularly during later pregnancy, may limit fetal growth retardation and enhance postnatal growth capacity and carcass characteristics, and may improve development of intramuscular fat. Continued improvements in understanding developmental processes and their regulation will increase future capacity to improve growth, efficiency, carcasses, and meat quality through developmental programming.
母体对胎儿发育的调节会影响胴体组织的生长和发育。严重的胎儿生长受限会降低产后生长能力，导致动物生长迟缓，达到市场体重所需的时间更长，但对肥育效率或胴体和肉质几乎没有影响。特定的营养补充，特别是在妊娠后期，可能会限制胎儿生长迟缓，提高产后生长能力和胴体特性，并可能改善肌肉内脂肪的发育。对发育过程及其调控的理解不断深入，将提高未来通过发育编程来改善生长、效率、胴体和肉质的能力。
