Skip to Main content Skip to Navigation
Journal articles

Sélection pour abaisser le potentiel glycolytique du muscle chez le porc Large White 1. Réponses directes

Abstract : A six-generation selection experiment comprising a selected (S) and a control (C) line has been conducted with the objective of decreasing muscle glycolytic potential in purebred French Large White pigs. Both lines consisted of six to eight sires and about 40 dams per generation, and each dam produced two litters. The selection criterion in the line S was the in vivo glycolytic potential (IVGP) of the Longissimus (ld) muscle, measured on a shot-biopsy sample removed at 75 kg live weight on boars and gilts from first-parity litters. In addition, the post mortem glycolytic potential (PMGP) of ld, semime!n6ranosus (sm) and semispinalis capitis (sc) muscles was recorded on pigs from second-parity litters slaughtered at 100 kg live weight. Throughout the experiment, 2 981 and 454 animals were recorded for IVGP and PMGP, respectively. A consistent decrease in IVGP and, to a lesser extent, in PMGP was obtained in the line S compared with the line C. Estimates of genetic changes per generation were -0.18, -0.11, -0.07 and -0.09 SD units of the trait for IVGP and PMGP of ld, sm and sc muscles, respectively. The REML heritability estimates were 0.25 ± 0.02, 0.15 ± 0.06, 0.14 ± 0.06 and 0.17 ± 0.05 for the above four traits, respectively. The REML estimate of genetic correlation of IVGP with PMGP ld (0.87 ± 0.15) was somewhat higher than those of IVGP with PMGP of sm and sc (0.56 ± 0.14 and 0.68 ± 0.13, respectively). It is concluded that downward selection on muscle glycolytic potential may be effective in pigs.
Document type :
Journal articles
Complete list of metadata

Cited literature [31 references]  Display  Hide  Download

https://hal.inrae.fr/hal-02692371
Contributor : Migration Prodinra Connect in order to contact the contributor
Submitted on : Monday, June 1, 2020 - 7:15:34 AM
Last modification on : Tuesday, June 22, 2021 - 3:10:02 PM
Long-term archiving on: : Wednesday, December 2, 2020 - 10:40:18 AM

File

136365_20070903122214894_1.pdf
Publisher files allowed on an open archive

Identifiers

  • HAL Id : hal-02692371, version 1
  • PRODINRA : 136365

Citation

Pascale Le Roy, Catherine Larzul, Jean-Marcel Gogué, André Talmant, Gabriel Monin, et al.. Sélection pour abaisser le potentiel glycolytique du muscle chez le porc Large White 1. Réponses directes. Genetics Selection Evolution, BioMed Central, 1998, 30 (5), pp.469-480. ⟨hal-02692371⟩

Share

Metrics

Record views

18

Files downloads

24