The characteristics of muscle fiber types of longissimus thoracis muscle and their influences on the quantity and quality of meat from Japanese Black steers

Ozawa, Shinobu; Mitsuhashi, T.; Mitsumoto, Mitsuru; Matsumoto, Shiomi; Itoh, N.; Itagaki, Kimio; Kohno, Y.; Dohgo, Taiji

doi:10.1016/s0309-1740(99)00072-8

Cited by 152 publications

(111 citation statements)

References 11 publications

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“…Sex differences on muscle fibre characteristics were affirmed also in other species (e.g. pigs or cattle) by Ozawa et al (2000), Klont et al (1998) or Johnston et al (1981). Our results also confirmed significant differences between males and females in the CSA, perimeter and diameter attributes in the German Heath sheep breed, but in a reversed order.…”

Section: Discussionsupporting

confidence: 83%

Histochemical muscle fibre characteristics of German Heath lamb meat

et al. 2015

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Histochemical characteristics of muscle were evaluated in 12 German Heath lambs (6 males and 6 females). The lambs were slaughtered at the age of 150 days and samples of musculus longissimus lumborum et thoracis and quadriceps femoris were collected and measurements of fibre cross sectional area (µm 2 ), diameter (µm 2 ), and perimeter (µm 2 ) were performed. Subsequently the fibre type distribution (%) was calculated. The dataset was evaluated using SAS 9.3. Significantly higher (P < 0.05) cross sectional area, diameter, and perimeter attributes were observed in females compared to males. Significant differences (P < 0.05 to 0.01) were observed in fibre type distribution between musculus longissimus lumborum et thoracis and quadriceps femoris muscle. The presented study describes evaluation of morphological formation of skeletal muscle tissue performed on a sheep breed of German origin. The results may be useful for meat scientists or meat industry due to close connection of these characteristics to meat quality. Cross sectional area, fibre type distribution, musculus longissimus lumborum et thoracis, quadriceps femoris muscle

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Section: Discussionsupporting

confidence: 83%

Histochemical muscle fibre characteristics of German Heath lamb meat

et al. 2015

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“…All parameters of fiber size for type IIB were higher in low redness groups than in high redness groups, without reference to lightness. In cattle, Ozawa et al (2000) showed that fiber diameter of red fiber types (βR and αR) were positively correlated with the meat color CIE a * value. In general, oxidative fibers such as fiber type I and IIA have Data are least-square means (standard error) of pigs in each lightness × redness combination.…”

Section: Muscle Fiber Characteristicsmentioning

confidence: 98%

The Relationship between Meat Color (CIE L* and a*), Myoglobin Content, and Their Influence on Muscle Fiber Characteristics and Pork Quality

Kim¹,

Jeong²,

Hur³

et al. 2010

Korean Journal for Food Science of Animal Resources

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This study examined the relationship between meat color and myoglobin content, and evaluated their influence on muscle fiber characteristics and overall pork quality. Four groups of pigs were classified by lightness (CIE L * ) and redness (CIE a * ): HH, high lightness and high redness; HL, high lightness and low redness; LH, low lightness and high redness; LL, low lightness and low redness. Myoglobin content ranged from 1.2 mg/g to 2.1 mg/g, and was highest in the LH group and lowest in the LL group (p<0.05). Myoglobin content correlated significantly with redness (CIE a * ) (r = 0.45, p<0.01). Fiber compositions of type I and IIA were closely related to lightness and redness. Pork with higher sizes of type IIA and IIB fibers had lower lightness and redness, respectively, which was tougher than the other pork. Pork having the highest lightness and lowest redness, often considered "pale", has higher values in drip loss than the other classes of pork tested.

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“…The effect of gender on the differences in muscle fibre characteristics was evaluated in studies published by Klont et al (1998), Ozawa et al (2000), Wojtysiak et al (2004) and Čítek et al (2012). The effect of gender, or castration, applies especially after reaching sexual maturity -until the pigs reach at least 50 -70 kg of life weight the effect itself is negligible (Hovorka, 1983).…”

Section: Introductionmentioning

confidence: 99%

The effect of gender on the characteristics of muscle fibers in pork

Okrouhlá¹,

Čítek²,

Stupka³

et al. 2014

JCEA

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The aim of this study was to evaluate the influence of gender on the proportional representation of different types of muscle fibres and their selected characteristics. The experiment was carried out with the use of 72 crossbred pigs of final TOPIGS hybrid combination with balanced gender ratio (24 boars/24 gilts/24 barrows) at an average live weight of 22.5 kg. The average slaughter weight of the animals was 108.7 kg. In order to determine the quantitative (number) and qualitative (area, diameter, length) characteristics of the muscle fibre, samples were obtained from the loin carcass part, specifically the muscle musculus longissimus lumborum et thoracis (MLLT). These samples were used for the manufacture and evaluation of permanent histological slides. There were negative correlations found between the number of muscle fibres and their size. Gilts had the highest number of muscle fibres (208.55) per measured surface (1 mm 2 ) and simultaneously the smallest diameter (66.31 μm) of muscle fibres in comparison with boars and barrows. Statistically significant (P<0.05) differences in the area and diameter of muscle fibres type IIA were detected between gilts and barrows.Keywords: gender, loin, muscles, pigs, type of muscle fibres Abstrakt Cílem práce bylo vyhodnotit vliv pohlaví na zastoupení jednotlivých typů svalových vláken a na jejich vybrané charakteristiky. Do pokusu bylo zařazeno 72 kusů jatečných prasat finální hybridní kombinace TOPIGS, vyrovnaného pohlaví (24 vepříků/24 prasniček/24 kanečků). Při naskladnění měla prasat průměrnou hmotnost 22,5 kg. Průměrná porážková hmotnost sledovaných zvířat byla 108,7 kg. Za účelem sledování kvantitativních (počet) a kvalitativních (plocha, obvod, tloušťka) charakteristik svalových vláken byly odebrány vzorky z jatečné partie pečeně ze svalu musculus longissimus lumborum et thoracis. Tyto vzorky byly použity ke zhotovení a vyhodnocení trvalých histologických preparátů. Mezi počtem svalových vláken a jejich velikostí se projevily negativní korelace. Prasničky měly nejvyšší počet Detailní abstraktVliv pohlaví nebo kastrace se projevuje zejména po dosažení pohlavní dospělosti -do živé hmotnosti prasat 50 -70 kg je efekt samotný zanedbatelný. Rozdíly mezi kanci a prasničkami v počtu svalových vláken může být způsoben právě hormonální aktivitou. Cílem práce bylo zhodnotit vliv pohlaví na zastoupení jednotlivých svalových vláken a jejich charakteristiky u prasat. Pokus byl realizován se 72 kusy prasat finální kombinace TOPIGS (24 vepříků, 24 prasniček, 24 kanečků). Pokus byl ukončen při průměrné porážkové hmotnosti prasat 108,7 kg. Byly analyzovány vzorky z jatečné partie pečeně (musculus longissimus lumborum et thoracis -MLLT). Získané vzorky byly použity k tvorbě trvalých histologických preparátů. Vzorky byly zmrazeny pomocí tekutého dusíku, krájeny pomocí Leica microtome, obarveny, fixovány na sklíčka a zhotoveny obrázky histologických řezů pomocí optického mikroskopu s fotoaparátem. Získané hodnoty byly vyhodnoceny statistickým programem SAS. Kvantitativní (po...

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The characteristics of muscle fiber types of longissimus thoracis muscle and their influences on the quantity and quality of meat from Japanese Black steers

Cited by 152 publications

References 11 publications

Histochemical muscle fibre characteristics of German Heath lamb meat

Histochemical muscle fibre characteristics of German Heath lamb meat

The Relationship between Meat Color (CIE L* and a*), Myoglobin Content, and Their Influence on Muscle Fiber Characteristics and Pork Quality

The effect of gender on the characteristics of muscle fibers in pork

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