Guanidinoacetic acid supplementation on growth performance and molecular mechanisms of lean mass gain in nursery pigs
Guanidinoacetic acid supplementation on growth performance and molecular mechanisms of lean mass gain in nursery pigs
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DOI：
10.1590/0103-8478cr20190948
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发表时间：
2020-01-01
期刊：
影响因子：
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通讯作者：
Rocha, Gabriel Cipriano
中科院分区：
文献类型：
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作者：
Valini, Graziela Alves da Cunha;Duarte, Marcio de Souza;Rocha, Gabriel Cipriano
The objective with the present study was to evaluate the effect of guanidinoacetic acid (GAA) on the growth performance of nursery piglets as well as a possible molecular mechanism of action on lean mass gain. Seventy-two pigs, weaned at 21 d, weighing 6.80 +/- 1.2 kg were distributed in a completely randomized design into one of three dietary treatments (control, control + 1.2 g/kg GAA or control + 2.4 g/kg GAA) and 8 replicates per treatment. The control diet was an animal protein-free diet based on corn and soybean meal. Body weight, average daily weight gain, average daily feed intake and feed efficiency were evaluated at 35, 49, and 56 days. At the end of the experiment, one animal per pen was slaughtered and samples of the vastus lateralis muscle were collected for RT-qPCR and protein abundance analysis. Overall (from 21 to 56 d), GAA supplementation improved feed efficiency (P < 0.03). Skeletal muscle of pigs fed with GAA diet had greater mRNA expression of Akt (P < 0.04) and RPS6KB2 (P
