KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Author: search.filters.author.Adeyemi, Kazeem D.Subject: search.filters.subject.inosine monophosphate

Search Results

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Effects of Genotype and Sex on Carcass Traits, Myosin Heavy Chain Isoforms and Meat Characteristics of Pigs
    (2025-09-01)
    Chaosap, Chanporn
    ;
    Buajoom, Wuttikorn
    ;
    Pothising, Numfon
    ;
    Kongtasorn, Chananya
    ;
    Adeyemi, Kazeem D.
    This study investigated the effects of genotype and sex on carcass traits, myosin heavy chain (MyHC) isoforms, and meat quality in pigs raised under Thai commercial conditions. Fifty pigs (25 barrows and 25 gilts) from five genotypes—purebred Duroc (D), LWLR1 (Large White_old × Landrace_old), LWLR2 (Large White_new × Landrace_new), DLWLR1 (Duroc × LWLR1), and DLWLR2 (Duroc × LWLR2)—were slaughtered at ~110 kg body weight. LWLR1 is traditional maternal line, whereas LWLR2 is a newly selected line for higher intramuscular fat (IMF). Significant genotype × sex interactions were observed for dressing percentage, carcass length, bone percentage, purge loss, pH<inf>24</inf>, and L* (lightness) (p < 0.05). The Longissimus lumborum (LL) muscle of Duroc pigs showed the lowest pH<inf>45</inf> and shear force but highest IMF, whereas LWLR1 pigs exhibited higher crude protein, polyunsaturated fatty acids, and flavor-enhancing nucleotides. The LL muscle of LWLR2 and DLWLR2 pigs showed greater expression of MyHC I and IIA, as well as calpain 1 (CAPN1), calpain 2 (CAPN2), and calpastatin (CAST) genes. In contrast, Duroc pigs had the highest MyHC IIX and lowest IIB expression, opposite to patterns in LWLR1 and DLWLR1. Principal component analysis revealed distinct genotype-based clustering, emphasizing the influence of maternal lineage on pork quality and offering valuable insights for genetic selection strategies.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Meat Characteristics, Expression of Myosin Heavy Chain and Metabolism-Related Genes in Thai Native Pigs
    (2024-05-01)
    Chaosap, Chanporn
    ;
    Chaweewan, Kamon
    ;
    Adeyemi, Kazeem D.
    ;
    Phonkate, Netanong
    ;
    Sitthigripong, Ronachai
    This study investigated the meat quality, expression of myosin heavy chain (MyHC) and metabolism-related genes, ribonucleotides and fatty acids in Longissimus thoracis of Thai native pigs (TNPs) from different geographical regions (GR). Forty-one 9–10-month-old castrated TNPs (BW 60 kg), consisting of 18, 11 and 12 pigs from Northern (NT), Southern (ST) and Northeastern (NE) regions, respectively, were slaughtered. GR did not affect (p > 0.05) the expression of MyHC, phosphoglycerate mutase 1, cytosolic glycerol-3-phosphate dehydrogenase, triosephosphate isomerase 1 and adipocyte fatty acid binding protein genes. The trend of MyHC was MyHC IIx > MyHC IIb > MyHC IIa > MyHC I. The NT loin had higher (p < 0.05) glycogen, C18:2n6, C20:4n6 and cooking loss, lower inosine, inosine monophosphate and hypoxanthine and a shorter sarcomere length than the ST and NE loins. The ST loin had a lower (p < 0.05) a* compared to other loins. Principal component analysis established significant relationships between the TNP and specific meat quality traits. This finding suggests that GR affected the meat quality, ribonucleotides and selected fatty acids in TNPs. These results provide relevant information that can be used to optimize the use of Thai native pork.