Cortisol-binding Globulin and Meat Quality in Five European Lines of Pigs.
From: Laboratoire de Neurogénétique et Stress, INRA Institut François Magendie, 33077 Bordeaux cedex, France.
Journal of animal science
- Publish Date: Jan 2006
- ISSN: 1525-3163
- Volume: 84
- Issue: 1
- Pages: 204-11
- Medium: Internet
- Language: English
- Citation (JAMA): Geverink N A, Foury A, Plastow G S, et al. Cortisol-binding Globulin and Meat Quality in Five European Lines of Pigs.. J. Anim. Sci. Jan 2006;84:204-11
Abstract
The gene (Cbg) encoding cortisol-binding globulin (CBG) has been proposed as a candidate gene to explain genetic variation in cortisol secretion and carcass composition in pigs. The objective of this study was to evaluate the association between CBG and pork quality in 5 European breeding lines, Piétrain, Large White (LW), and Landrace purebred lines, a Duroc synthetic line, and a Meishan (MS) x LW advanced intercross. Cortisol-binding globulin maximum binding capacity (CBG-Bmax) was twice as high (P < 0.05) in MS x LW pigs compared with the other lines. There was no (P > or = 0.364) association between CBG-Bmax and carcass quality traits in Piétrain gilts, but CBG-Bmax was associated with increased loin yields in LW (P = 0.010) and Landrace (P = 0.103) gilts, decreased ham yields (P = 0.082) in Duroc gilts, and increased fat depth (P = 0.064) and leaf fat (P = 0.001) in MS x LW gilts. There was no association between CBG-Bmax and pork quality traits in Piétrain (P > or = 0.269) and Duroc (P > or = 0.114) gilts. Conversely, CBG-Bmax was associated with lighter (higher L* values; P < 0.05) pork in Land-race gilts, as well as lower (P < or = 0.055) ultimate pH in the LM and semimembranosus, and a tendency for lower (P = 0.095) L* values of pork from LW gilts. Within MS x LW pigs, CBG-Bmax was associated with increased drip loss (P = 0.001) and decreased i.m. fat in the semimembranosus (P = 0.005). Because drip loss is an economically important pork quality trait, results of this study could be used in the selection of improved water-holding capacity of pork from synthetic lines involving the MS breed.
Mesh Headings (Keywords): Animals, Body Composition, Breeding, Carrier Proteins, Europe, Female, Genotype, Meat, Muscle, Skeletal, Swine, Water
Check for Full Text / PubMed Unique Identifier (PMID): 16361508
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