Selection for reduced muscle glycolytic potential in Large White pigs. III. Correlated responses in growth rate, carcass composition and reproductive traits

Larzul, Catherine; Roy, Pascale Le; Gogué, Jean; Talmant, André; Monin, Gabriel; Sellier, Pierre

doi:10.1186/1297-9686-31-2-149

Cited by 4 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The favourable effect of RN − on carcass lean to fat ratio is in accordance with the positive genetic correlation of lean to fat ratio with muscle GP found by Larzul et al [18] in a presumably RN − -free population. Higher muscle GP appears to be genetically associated with leaner carcass regardless of whether the increase in GP is due to the RN − allele or to polygenes.…”

Section: ± ±supporting

confidence: 89%

Comparison between the three porcine RN genotypes for growth, carcass composition and meat quality traits

Roy

Elsen²,

Caritez

et al. 2000

Genet. Sel. Evol.

Self Cite

View full text Add to dashboard Cite

-A three-step experimental design has been carried out to add evidence about the existence of the RN gene, with two segregating alleles RN − and rn + , having major effects on meat quality in pigs, to estimate its effects on production traits and to map the RN locus. In the present article, the experimental population and sampling procedures are described and discussed, and effects of the three RN genotypes on growth and carcass traits are presented. The RN genotype had no major effect on growth performance and killing out percentage.

show abstract

Section: ± ±supporting

confidence: 89%

Comparison between the three porcine RN genotypes for growth, carcass composition and meat quality traits

Roy

Elsen²,

Caritez

et al. 2000

Genet. Sel. Evol.

Self Cite

View full text Add to dashboard Cite

show abstract

Comparison between the three porcine RN genotypes for growth, carcass composition and meat quality traits

Roy

Elsen²,

Caritez

et al. 2000

Genet Sel Evol

Self Cite

View full text Add to dashboard Cite

show abstract

Adenosine monophosphate-activated protein kinase involved in variations of muscle glycogen and breast meat quality between lean and fat chickens1

Sibut

Bihan-Duval

Tesseraud

et al. 2008

Journal of Animal Science

View full text Add to dashboard Cite

The present study was aimed at evaluating the molecular mechanisms associated with the differences in muscle glycogen content and breast meat quality between 2 experimental lines of chicken divergently selected on abdominal fatness. The glycogen at death (estimated through the glycolytic potential) of the pectoralis major muscle and the quality of the resulting meat were estimated in the 2 lines. The fat chickens exhibited greater glycolytic potential, and in turn lower ultimate pH than the lean chickens. Consequently, the breast meat of fat birds was paler and less colored (i.e., less red and yellow), and exhibited greater drip loss compared with that of lean birds. In relation to these variations, transcription and activation levels of adenosine monophosphate-activated protein kinase (AMPK) were investigated. The main difference observed between lines was a 3-fold greater level of AMPK activation, evaluated through phosphorylation of AMPKalpha-(Thr(172)), in the muscle of lean birds. At the transcriptional level, data indicated concomitant down- and upregulation for the gamma1 and gamma2 AMPK subunit isoforms, respectively, in the muscle of lean chickens. Transcriptional levels of enzymes directly involved in glycogen turnover were also investigated. Data showed greater gene expression for glycogen synthase, glycogen phosphorylase, and the gamma subunit of phosphorylase kinase in lean birds. Together, these data indicate that selection on body fatness in chicken alters the muscle glycogen turnover and content and consequently the quality traits of the resulting meat. Alterations of AMPK activity could play a key role in these changes.

show abstract

Selection for reduced muscle glycolytic potential in Large White pigs. III. Correlated responses in growth rate, carcass composition and reproductive traits

Abstract: -A six-generation selection experiment comprising a selected (S) and a control line (C), and aiming at decreasing muscle

Cited by 4 publications

References 2 publications

Comparison between the three porcine RN genotypes for growth, carcass composition and meat quality traits

Comparison between the three porcine RN genotypes for growth, carcass composition and meat quality traits

Comparison between the three porcine RN genotypes for growth, carcass composition and meat quality traits

Adenosine monophosphate-activated protein kinase involved in variations of muscle glycogen and breast meat quality between lean and fat chickens1

Contact Info

Product

Resources

About