title: Association of blood glucose, blood lactate, serum cortisol levels, muscle metabolites, muscle fiber type composition, and pork quality traits.
abstract: The objective of this study was to investigate the relationship of blood glucose levels with blood lactate, serum cortisol levels, postmortem muscle glycogen and lactate content, muscle fiber type composition, and pork quality traits. Compared to pigs with lower blood glucose levels, pigs with higher blood glucose levels showed higher blood lactate and serum cortisol levels at exsanguination, and they had lower residual glycogen and higher lactate content in the muscle at 45min postmortem. In addition, pigs with higher blood glucose levels had higher type IIB and lower type I area composition and finally exhibited lower muscle pH, paler color, and excessive loss of fluid on surface. These results imply that measuring blood glucose levels at exsanguination can be useful to indicate early glycolytic rates during postmortem and thus may be of value in the identification of pork with undesirable quality traits.
authors.affiliation: Department of Food Bioscience and Technology, College of Life Science and Biotechnology, Korea University, Seongbuk-Gu, Seoul 136-701, Republic of Korea; Institute of Life Science and Natural Resources, Korea University, Seongbuk-Gu, Seoul 136-701, Republic of Korea.
authors.forename: J H
authors.initials: JH
authors.lastname: Choe
authors.affiliation: Department of Food Bioscience and Technology, College of Life Science and Biotechnology, Korea University, Seongbuk-Gu, Seoul 136-701, Republic of Korea. Electronic address: bckim@korea.ac.kr.
authors.forename: B C
authors.initials: BC
authors.lastname: Kim
mesh_terms: D000003:Abattoirs; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism*; D003116:Color; D006003:Glycogen / Q000097:blood; D006019:Glycolysis; D006801:Humans; D006854:Hydrocortisone / Q000097:blood*; D006863:Hydrogen-Ion Concentration; D019344:Lactic Acid / Q000097:blood*; D008297:Male; D008460:Meat / Q000032:analysis* / Q000592:standards; D018485:Muscle Fibers, Skeletal; D018482:Muscle, Skeletal / Q000166:cytology / Q000378:metabolism*; D011180:Postmortem Changes; D013312:Stress, Physiological; D034421:Sus scrofa; D014867:Water
chemical_list: D001786:Blood Glucose; D014867:Water; D019344:Lactic Acid; D006003:Glycogen; D006854:Hydrocortisone
keywords: Blood glucose; Glycolytic rate; Muscle fiber type composition; Muscle metabolites; Pork quality