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Skeletal Muscle Development in Postnatal Beef Cattle Resulting from Maternal Protein Restriction during Mid-Gestation

机译:母体蛋白质限制在中间妊娠中的骨骼肌发育

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摘要

The intrauterine period plays a major role in skeletal muscle development and metabolism, including the formation of muscle fibers and adipose and connective tissue. Since the embryo and fetus depend on maternal nutrition to develop and grow, understanding the effects and finding potential strategies of skeletal muscle manipulation may be a valuable alternative to enhance beef cattle performance postnatally. In the present study, we evaluated the effects of maternal protein restriction during mid-gestation on the short and long -term skeletal muscle composition of the offspring. Our results suggest that the detrimental effects of maternal protein restriction during mid-gestation were associated with decrease in muscle fibers formation and may have contributed to the increase in collagen content in the skeletal muscle of the offspring. Although the changes in muscle fiber metabolism were not persistent, maternal protein restriction may contribute to such a short-term alteration. Our findings highlight the importance of an adequate nutritional plane for pregnant beef cows, to improve offspring’s performance, and consequently, the meat quality.
机译:宫内期期在骨骼肌发育和新陈代谢中发挥着重要作用,包括形成肌肉纤维和脂肪和结缔组织。由于胚胎和胎儿依赖于母体营养来发展和生长,了解骨骼肌操纵的效果和发现潜在的策略可能是在后期提高牛肉牛的绩效的有价值的替代品。在本研究中,我们评估了在后代短期和长期骨骼肌组合物的中妊娠期间母体蛋白质限制的影响。我们的研究结果表明,母体蛋白质限制在中妊娠期间的不利影响与肌肉纤维的形成减少有关,可能导致后代骨骼肌中胶原含量的增加。虽然肌肉纤维代谢的变化不是持续的,但母体蛋白质限制可能有助于这种短期改变。我们的调查结果突出了孕妇牛奶足够营养飞机的重要性,以提高后代的性能,因此,肉质。

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