TY - JOUR
T1 - Identification of carcass and meat quality quantitative trait loci in a Landrace pig population selected for growth and leanness
AU - Vidal, O.
AU - Noguera, J. L.
AU - Amills, M.
AU - Varona, L.
AU - Gil, M.
AU - Jiménez, N.
AU - Dávalos, G.
AU - Folch, J. M.
AU - Sánchez, A.
PY - 2005/2/1
Y1 - 2005/2/1
N2 - The identification of QTL related to production traits that are relevant for the pig industry has been mostly performed by using divergent crosses. The main objective of the current study was to investigate whether these growth, fatness, and meat quality QTL, previously described in diverse experimental populations, were segregating in a Landrace commercial population selected for litter size, backfat thickness, and growth performance. We have found QTL for carcass weight (posterior P > 0.75), cutlet weight (posterior P > 0.99), weight of ham (posterior P > 0.75), shoulders weight (posterior probability > 0.99), and shear firmness (posterior P > 0.99) on pig Chromosome 2. Moreover, QTL with posterior P > 0.75 for fat thickness between the 3rd and 4th ribs (Chromosome 7), rib weights (Chromosome 8), backfat thickness (Chromosomes 8, 9, and 10), and b Minolta color component (Chromosome 7) were identified. These results indicate that commercial purebred populations retain a significant amount of genetic variation, even for traits that have been selected for many generations. ©2005 American Society of Animal Science. All rights reserved.
AB - The identification of QTL related to production traits that are relevant for the pig industry has been mostly performed by using divergent crosses. The main objective of the current study was to investigate whether these growth, fatness, and meat quality QTL, previously described in diverse experimental populations, were segregating in a Landrace commercial population selected for litter size, backfat thickness, and growth performance. We have found QTL for carcass weight (posterior P > 0.75), cutlet weight (posterior P > 0.99), weight of ham (posterior P > 0.75), shoulders weight (posterior probability > 0.99), and shear firmness (posterior P > 0.99) on pig Chromosome 2. Moreover, QTL with posterior P > 0.75 for fat thickness between the 3rd and 4th ribs (Chromosome 7), rib weights (Chromosome 8), backfat thickness (Chromosomes 8, 9, and 10), and b Minolta color component (Chromosome 7) were identified. These results indicate that commercial purebred populations retain a significant amount of genetic variation, even for traits that have been selected for many generations. ©2005 American Society of Animal Science. All rights reserved.
KW - Pigs
KW - Quantitative Trait Loci
KW - Selected Population
U2 - 10.2527/2005.832293x
DO - 10.2527/2005.832293x
M3 - Article
VL - 83
SP - 293
EP - 300
IS - 2
ER -