State Key Laboratory of Sheep Genetic Improvement and Healthy Production;
Xinjiang Academy of Agricultural and Reclamation Science;
Shihezi 832000;
China;
Laboratory of Metabolic Manipulation of Herbivorous Animal Nutrition;
College of Animal Science and Technology;
Yangzhou University;
Yangzhou 225009;
China;
Joint International Research Laboratory of Agriculture and Agri-Product Safety;
The Ministry of Education of China;
Yangzhou University;
Yangzhou 225009;
China;
Department of Animal Sciences and Division of Nutritional Sciences;
University of Illinois;
Urbana;
IL 61801;
USA;
Intrauterine growth restriction; L-arginine; Fetal sheep; N-carbamylglutamate; Intestinal amino acids;