Impacto da suplementação proteica materna durante o terço médio ou terço final da gestação sobre o metabolismo energético do tecido muscular de bezerros de corte

Ciencia Rural

article

Letícia Maria Pereira Sanglard¹  David Esteban Contreras Marquez²  Walmir Silva³  Marta Maria dos Santos³  Thaís Correia Costa³  Dante Teixeira Valente Junior³  Mateus Pies Gionbelli⁴  Nick Vergara Lopes Serão¹  Claudia Batista Sampaio³  Marcio de Souza Duarte⁵ 

[1] Iowa State University;Universidad de Cundinamarca;Universidade Federal de Viçosa;Universidade Federal de Lavras;University of Guelph

关键词: beef calves;    energy metabolism;    fetal programming;    maternal nutrition;    gene expression;    protein expression;   

DOI  :  10.1590/0103-8478cr20210917

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

This study evaluated the effect of maternal protein supplementation during mid or late gestation on energy metabolism of the skeletal muscle of beef calves. Sixteen pregnant cows were divided into 3 groups: CTRL (not supplemented); MID (supplemented from 30 to 180 days of gestation); and LATE (supplemented from 181 to 281 days of gestation). The supplement contained 30% crude protein. Thirty days after birth, blood and muscle samples of the calves were collected for analyses of gene expression, proteins, and metabolites. No differences (P ≥ 0.15) in birth weight, performance at weaning, or muscle expression of the genes evaluated (P ≥ 0.21) were observed. Calves born to CTRL cows had a lower ratio (P = 0.03) of p-AMPK/AMPK protein in the skeletal muscle. Calves born to MID cows had lower (P = 0.04) glucose concentration than those born to LATE cows. Changes in p-AMPK/AMPK protein, indicated a possible metabolic inflexibility in the skeletal muscle of calves born to CTRL cows. These results indicated that lack of protein supplementation in pregnant cows alter the energy metabolism of their calves and reflect in a metabolic inflexibility.

【 授权许可】

Unknown