Maternal dietary supplementation of arginine increases the ratio of total cloned piglets born to total transferred cloned embryos by improving the pregnancy rate of recipient sows
文献类型： 外文期刊
作者： Li, Zicong 1 ; Yue, Zhimin 1 ; Ao, Zheng 1 ; Zhao, Chengfa 1 ; Shi, Junsong 3 ; Zhao, Chengcheng 1 ; Zeng, Fang 4 ; Cai, 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, Natl Engn Res Ctr Breeding Swine Ind, Guangzhou 510642, Guangdong, Peoples R China
2.South China Agr Univ, Coll Anim Sci, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Guangzhou 510642, Guangdong, Peoples R China
3.Guangdong Wens Breeding Swine Co, Yunfu 527400, Guangdong, Peoples R China
4.South China Agr Univ, Coll Marine Sci, Guangzhou 510642, Guangdong, Peoples R China
关键词： Cloned; SCNT; Pig; Embryos; Arginine
期刊名称：ANIMAL REPRODUCTION SCIENCE （ 影响因子：2.145； 五年影响因子：2.281 ）
ISSN： 0378-4320
年卷期： 2018 年 196 卷
页码：
收录情况： SCI
摘要： The extremely low full-term developmental efficiency of cloned pig embryos limits the practical application of pig cloning techniques. Maternal dietary supplementation of the nutritionally important amino acid, arginine, can enhance prenatal developmental rate of in vivo fertilization derived pig embryos. It was hypothesized that maternal dietary addition of arginine can also improve the developmental capacity of cloned pig embryos. To test this hypothesis, there was a comparison of the reproductive performance between recipient sows fed an L-arginine-supplemented diet (L-Arg group) and those fed the control diet (control group). There was a subsequent comparison of the developmental indexes of cloned piglets farrowed in the L-Arg and control groups of surrogate sows. Dietary supplementation of L-arginine during gestation days 14-75 increased the plasma concentrations of arginine and arginine metabolites, including nitric oxide, spermidine, and putrescine in recipient sows of transferred cloned pig embryos. Although maternal arginine addition did not affect the birth weight and placental development indexes of newborn cloned piglets, it significantly increased the ratio of total cloned piglets born to total transferred cloned pig embryos by increasing the pregnancy rate of recipient sows. The results of this study suggest that nutritional management of recipient sows is an effective approach to improve the developmental rate of cloned pig embryos.
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