Effect of guanidine acetic acid on meat quality, muscle amino acids, and fatty acids in Tibetan pigs
文献类型： 外文期刊
作者： Cui, Yiyan 1 ; Tian, Zhimei 1 ; Yu, Miao 1 ; Liu, Zhichang 1 ; Rong, Ting 1 ; Ma, Xianyong 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Inst Anim Sci, Guangzhou, Peoples R China
2.State Key Lab Livestock & Poultry Breeding, Guangzhou, Peoples R China
3.Minist Agr, Key Lab Anim Nutr & Feed Sci South China, Guangzhou, Peoples R China
4.Guangdong Prov Key Lab Anim Breeding & Nutr, Guangzhou, Peoples R China
5.Guangdong Engn Technol Res Ctr Anim Meat Qual & Sa, Guangzhou, Peoples R China
6.Maoming Branch, Guangdong Lab Lingnan Modern Agr, Maoming, Peoples R China
关键词： guanidine acetic acid; fatty acid; lipid metabolism; Tibetan pig; meat quality
期刊名称：FRONTIERS IN VETERINARY SCIENCE （ 影响因子：3.471； 五年影响因子：3.821 ）
ISSN：
年卷期： 2022 年 9 卷
页码：
收录情况： SCI
摘要： This study investigated the effects of guanidine acetic acid (GAA) supplementation on growth performance, carcass traits, and meat quality in Tibetan pigs. A total of 18 male Tibetan pigs (21.35 +/- 0.99 kg) were randomly assigned to the control (basal diet) and GAA (basal diet + 800 mg/kg GAA) groups for 125 days. Growth performance, carcass traits, and meat quality in pigs, and the chemical composition of Longissimus thoracis (LT) were not altered by GAA. In LT, compared to the control group, dietary GAA increased the superoxide dismutase activity, transcripts of stearoyl CoA desaturase (SCD) and fatty acid synthase (FAS), and contents of glutamate, glutamine, C24:0, C20:3n-6, C20:4n-6, and polyunsaturated fatty acids (P < 0.05), but it decreased the malondialdehyde content (P < 0.001). In back fat, dietary GAA reduced the transcript of peroxisome proliferator-activated receptor gamma (PPAR gamma) and the contents of C10:0, C12:0, C14:0, and C16:0 (P < 0.05), whereas it increased the contents of C22:0, C20:1, C22:1, C24:1, C20:2, C20:3n-3, and C22:2 (P < 0.05). These findings will provide a basis for high-quality Tibetan pork production.
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