Relationships of myosin heavy chain fibre types to meat quality traits in traditional and modern pigs

Chang, Kin-Chow; Costa, Nuno da; Blackley, R; Southwood, O. I.; Evans, Gerard; Plastow, Graham; Wood, Jonathan; Richardson, RI

doi:10.1016/s0309-1740(02)00208-5

Cited by 189 publications

(140 citation statements)

References 19 publications

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“…Previous studies have reported that, compared with the Landrace (Guo et al, 2011), Duroc (Hu et al, 2008) and Large White (Lefaucheur et al, 2004), respectively, the mRNA expression levels of MyHCIIa and MyHCIIx were greater in Jinhua, Laiwu and Meishan pigs, whereas the mRNA expression levels of MyHCIIb were lower. Those results may be related to the variation of meat quality between pig breeds (Hu et al, 2008;Guo et al, 2011), because the composition of skeletal muscle fibers is one of the important factors in determining meat quality (Chang et al, 2003). As mentioned above, one can assume that Rongchang pigs have better meat quality traits compared with Landrace pigs due to differences in the type and composition of myofibers.…”

Section: Discussionmentioning

confidence: 98%

Differential expression of lipid metabolism-related genes and myosin heavy chain isoform genes in pig muscle tissue leading to different meat quality

Zhang

Luo

Zheng

et al. 2015

Animal

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The aim of this study was to investigate the variations in meat quality, lipid metabolism-related genes, myosin heavy chain (MyHC) isoform genes and peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α) gene mRNA expressions in longissimus dorsi muscle (LM) of two different pig breeds. Six Rongchang and six Landrace barrows were slaughtered at 161 days of age. Subsequently, meat quality traits and gene expression levels in LM were observed. Results showed that Rongchang pigs not only exhibited greater pH, CIE a* 24 h and intramuscular fat content but also exhibited lower body weight, carcass weight, dressing percentage, LM area and CIE b* 24 h compared with Landrace pigs (P < 0.05). Meanwhile, the mRNA expression levels of the lipogenesis (peroxisome proliferator-activated receptor gamma, acetyl-CoA carboxylase and fatty acid synthase) and fatty acid uptake (lipoprotein lipase)-related genes were greater in the Rongchang (P < 0.05), whereas the lipolysis (adipose triglyceride lipase and hormone sensitive lipase) and fatty acid oxidation (carnitine palmitoyltransferase-1B)-related genes were better expressed in the Landrace. Moreover, compared with the Landrace, the mRNA expression levels of MyHCI, MyHCIIa and MyHCIIx were greater, whereas the mRNA expression levels of MyHCIIb were lower in the Rongchang pigs (P < 0.05). In addition, the mRNA expression levels of PGC-1α were greater in Rongchang pigs than in the Landrace (P < 0.05), which can partly explain the differences in MyHC isoform gene expressions between Rongchang and Landrace pigs. Although the small number of samples does not allow to obtain a definitive conclusion, we can suggest that Rongchang pigs possess better meat quality, and the underlying molecular mechanisms responsible for the better meat quality in fatty pigs may be partly due to the higher mRNA expression levels of lipogenesis and fatty acid uptake-related genes, as well as the oxidative and intermediate muscle fibers, and due to the lower mRNA expression levels of lipolysis and fatty acid oxidation-related genes, as well as the glycolytic muscle fibers.

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Section: Discussionmentioning

confidence: 98%

Differential expression of lipid metabolism-related genes and myosin heavy chain isoform genes in pig muscle tissue leading to different meat quality

Zhang

Luo

Zheng

et al. 2015

Animal

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“…Furthermore, histological analysis of pigs from this trial revealed that increased maternal feeding in mid gestation improves the oxidative capacity of muscle (Markham et al, 2009). Indeed, a larger number of smaller or oxidative fibres can produce more favourable meat quality traits (more intense colour, optimum ultimate pH, less drip loss and improved tenderness of meat; Lengerken et al, 1997;Chang et al, 2003). However, some studies have found that increased maternal nutrition had no beneficial or even negative effects on growth, muscle fibres and meat quality of offspring (Nissen et al, 2003;Heyer et al, 2004).…”

Section: Introductionmentioning

confidence: 78%

“…Coding for the Ca 21 -activated calcineurin, this protein phosphatase has been shown to activate the slow oxidative muscle fibre type programme through the calcineurin/nuclear factor activated transcription factor pathway (Chin et al, 1998). Oxidative fibres are arguably more beneficial for meat quality than glycolytic fibres, conferring a more intense colour, higher ultimate pH, increased water-holding capacity and improved tenderness (Chang et al, 2003). Interestingly, fibre typing of these same pigs at day 131 pw revealed increases in the overall oxidative Type IIa fibre population in the ST of Treatment E pigs (Markham et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Nutritional intervention during gestation alters growth, body composition and gene expression patterns in skeletal muscle of pig offspring

Namara

Giblin

Markham

et al. 2011

Animal

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Variations in maternal nutrition during gestation can influence foetal growth, foetal development and permanently 'programme' offspring for postnatal life. The objective of this study was to analyse the effect of increased maternal nutrition during different gestation time windows on offspring growth, carcass quality, meat quality and gene expression in skeletal muscle. A total of 64 sows were assigned to the following feeding treatments: a standard control diet at a feed allocation of 2.3 kg/day throughout gestation, increased feed allowance of 4.6 kg/day from 25 to 50 days of gestation (dg), from 50 to 80 dg and from 25 to 80 dg. At weaning, Light, Medium and Heavy pigs of the same gender, within litter, were selected based on birth weight, individually penned and monitored until slaughter at 130 days post weaning. Carcass and meat quality traits of the semimembranosus (SM) muscle were recorded post mortem. A cross section of the semitendinosus (ST) muscle encompassing the deep and superficial regions were harvested from pigs (n 5 18 per treatment) for RNA extraction and quantification of gene expression by real-time PCR. The results showed that doubling the feed intake from 25 to 50 dg reduced offspring growth, carcass weight, intramuscular fat content and increased drip loss of the SM muscle. Interestingly, protein phosphatase 3 catalytic subunit -a-isoform, which codes for the transcription factor calcineurin, was upregulated in the ST muscle of offspring whose mothers received increased feed allowance from 25 to 50 dg. This may provide an explanation for the previous observed increases in Type IIa muscle fibres of these offspring. Increasing the maternal feed intake from 50 to 80 dg negatively impacted pig growth and carcass weight, but produced leaner male pigs. Extending the increased maternal feed intake from 25 to 80 dg had no effect on offspring over the standard control gestation diet. Although intra-litter variation in pig weight is a problem for pig producers, increased maternal feeding offered no improvement throughout life to the lighter birth weight littermates in our study. Indeed, increased maternal nutrition at the three-gestation time windows selected provided no major benefits to the offspring.

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“…Other studies suggest that differences between the same muscles may only be evident in specific breeds of any one species. It has been shown that the shear force of longissimus muscle differ significantly in Duroc, but not in Berkshire and Large White pigs (Chang et al, 2003). Additionally, variation in fibre type composition may effect on colour of meat.…”

Section: Resultsmentioning

confidence: 99%

The effect of genotype on muscle fibre characteristics of m. longissimus lumborum of fatteners

Wojtysiak

Migdał

2007

BIOTEC ANIM HUSB

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For histochemical analysis of muscle fibre types the activity of dehydrogenase NADH 2 (diaphorase) was detected using specific histochemical testes. The results of the current histochemical investigations showed that genotypes of fatteners can influence on histochemical composition of the muscle fibre types -especially on percentage and size of muscle fibre. These changes can have some influence on meat consumption quality.

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Relationships of myosin heavy chain fibre types to meat quality traits in traditional and modern pigs

Cited by 189 publications

References 19 publications

Differential expression of lipid metabolism-related genes and myosin heavy chain isoform genes in pig muscle tissue leading to different meat quality

Differential expression of lipid metabolism-related genes and myosin heavy chain isoform genes in pig muscle tissue leading to different meat quality

Nutritional intervention during gestation alters growth, body composition and gene expression patterns in skeletal muscle of pig offspring

The effect of genotype on muscle fibre characteristics of m. longissimus lumborum of fatteners

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