Relationships of Muscle Fiber Characteristics to Dietary Energy Density, Slaughter Weight, and Muscle Quality Traits in Finishing Pigs
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The present study was conducted to investigate the relationships of muscle fiber characteristics to dietary energy density[3.0 (Low-E) vs. 3.2(Med-E) Mcal DE/kg)] and slaughter weight[SW; 110, 125, and 138kg] in finishing pigs(gilt vs. barrow) using a 2×3×2 factorial treatment design. Forty-one longissimus dorsi muscle(LM) samples were analyzed histochemically, with growth performance and physicochemical data for the 41 animals and their LM out of 192 animals and 72 LM used in a previous study retrospectively included. The ADG was less(P<0.01) in the Low-E than in the Med-E group(0.93 vs. 0.73kg) whereas lightness (L*) and redness(a*) of LM were greater in the Low-E group SW did not influence these variables. The diameter and perimeter of the type I(slow-oxidative), type IIA(fast oxido-glycolytic) and type IIB(fast glycolytic) fibers increased with increasing SW whereas densities of the fibers decreased. However, the number and area percentages of the fiber types were not influenced by SW or dietary energy density. The percentage and per-mm2 density of type IIB fibers were negatively correlated with SW (r=－0.33 and －0.57, with P<0.05 and <0.01, respectively), whereas type I fiber number percentage was positively correlated with SW(r=0.31; P<0.05). Marbling score was negatively correlated(P<0.05) with type I(r=－0.36) and type IIB(r=－0.39) fiber densities. The a* was correlated(P<0.01) with both type I and type IIB fiber number percentages in the opposite way(r=0.42 and －0.47, respectively). However, L*(lightness), drip loss and pH24h were not correlated with the fiber number percentage or density of any fiber type. Collectively, results indicate that muscle fibers grow by hypertrophy during the late finishing period, but that fiber characteristics other than the size are not significantly influenced by dietary energy density or SW.
Abstract
The present study was conducted to investigate the relationships of muscle fiber characteristics to dietary energy density[3.0 (Low-E) vs. 3.2(Med-E) Mcal DE/kg)] and slaughter weight[SW; 110, 125, and 138kg] in finishing pigs(gilt vs. barrow) using a 2×3×2 factorial treatment design. Forty-one longissimus dorsi muscle(LM) samples were analyzed histochemically, with growth performance and physicochemical data for the 41 animals and their LM out of 192 animals and 72 LM used in a previous study retrospectively included. The ADG was less(P<0.01) in the Low-E than in the Med-E group(0.93 vs. 0.73kg) whereas lightness (L*) and redness(a*) of LM were greater in the Low-E group SW did not influence these variables. The diameter and perimeter of the type I(slow-oxidative), type IIA(fast oxido-glycolytic) and type IIB(fast glycolytic) fibers increased with increasing SW whereas densities of the fibers decreased. However, the number and area percentages of the fiber types were not influenced by SW or dietary energy density. The percentage and per-mm2 density of type IIB fibers were negatively correlated with SW (r=－0.33 and －0.57, with P<0.05 and <0.01, respectively), whereas type I fiber number percentage was positively correlated with SW(r=0.31; P<0.05). Marbling score was negatively correlated(P<0.05) with type I(r=－0.36) and type IIB(r=－0.39) fiber densities. The a* was correlated(P<0.01) with both type I and type IIB fiber number percentages in the opposite way(r=0.42 and －0.47, respectively). However, L*(lightness), drip loss and pH24h were not correlated with the fiber number percentage or density of any fiber type. Collectively, results indicate that muscle fibers grow by hypertrophy during the late finishing period, but that fiber characteristics other than the size are not significantly influenced by dietary energy density or SW.
참고문헌 (24)
- Bee, G., "Changes in the histochemical properties and meat quality traits of porcine muscles during the growing-finishing period as affected by feed restriction, slaughter age, or slaughter weight", J. Anim. Sci, 85, pp.1030~1045 (2007)
- Brook, M. H., "Muscle fiber types: how many and what kind?", Arch. Neurol, 23, pp.369~379 (1970)
- Candek-Potokar, M., "Effect of slaughter weight and", or age on histological characteristics of pig longissimus dorsi muscle as related to meat quality, 1998, pp.52, 195~203
- CIE, "Recommendations on uniform color spaces-color difference equations, psychometric color terms. Supplement no. 2 to CIE Publication No. 15(E-1.3.1) 1971", (TC-1-3), 1978, ~
- Harrison, A. P., "Selective regulation of myofiber differentiation by energy status during postnatal development", Am. J. Physiol, 270, pp.R667~R674 (1996)
- Hwang, Y. H., "The relationship between muscle fiber characteristics and meat quality traits of highly marbled Hanwoo(Korea native cattle) steers", Meat Sci, 86, pp.456~461 (2010)
- Joo, S. T., "The relationship of sarcoplasmic and myofibrillar protein solubility to colour and water-holding capacity in porcine longissimus muscle", Meat Sci, 52, pp.291~297 (1999)
- Joo, S. T., "Meat quality traits and control technologies, In Control of Meat Quality", pp.1~29 (2011), Research Signpost
- Karlsson, A. H., "Skeletal muscle fibres as factors for pork quality", Livest. Prod. Sci, 60, pp.255~269 (1999)
- Larzul, C., "Phenotypic and genetic parameters for longissimus muscle fiber characteristics in relation to growth, carcass and meat quality traits in Large White pigs", J. Animal Sci, 75, pp.3126~3137 (1997)
- 손시환, "Effects of restricted feeding, low-energy diet, and implantation of trenbolone acetate plus estradiol on growth, carcass traits, and circulating concentrations of insulin-like growth factor (IGF)-I and IGF-binding protein-3 in finishing barrows", JOURNAL OF ANIMAL SCIENCE, 80, pp.84~93, AMER SOC ANIMAL SCIENCE
- 주선태, "Skeletal muscle fiber type and myofibrillar proteins in relation to meat quality", MEAT SCIENCE, 86(0), pp.166~170 (2010), ELSEVIER SCI LTD
- Nam, Y. J., "Sensory evaluations of porcine longissimus dorsi muscle: relationships with post- mortem meat quality traits and muscle fiber characteristics", Meat Sci, 83, pp.731~736 (2009)
- 박병철, "Feasibility of Increasing the Slaughter Weight of Finishing Pigs", 한국동물자원과학회지, 53(3), pp.211~222 (2011), 한국동물자원과학회
- 박만종, "비육돈에서 사료의 에너지 수준과 도살체중이 성장성적과 도체의 등급 및 육질특성에 미치는 영향", 한국동물자원과학회지, 51(2), pp.143~154 (2009), 한국동물자원과학회
- Rehfeldt, C., "Myogenesis and postnatal skeletal muscle cell growth as influenced by selection", Livest. Prod. Sci, 66, pp.177~188 (2000)
- Ryu, Y. C., "The relationship between muscle fiber characteristics, postmortem metabolic rate, and meat quality of pig longissimus dorsi muscle", Meat Sci, 71, pp.351~357 (2005)
- 류연철, "Comparison of histochemical characteristics in various pork groups categorized by postmortem metabolic rate and pork quality", JOURNAL OF ANIMAL SCIENCE, 84, pp.894~901 (2006), AMER SOC ANIMAL SCIENCE
- Y. C. Ryu, "Estimation of Correlation Coefficients between Histological Parameters and Carcass Traits of Pig Longissimus Dorsi Muscle", ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, 17(3), pp.428~432 (2004), 아세아·태평양축산학회
- SAS, "STAT Software for PC", SAS, 2002
- Schiaffino, S., "Molecular diversity of myofibrillar proteins: gene regulation and functional signi- ficance", Physiol. Rev, 76, pp.371~423 (1996)
- Solomon, M. B., "Effect of feed intake and exogenous porcine somatotropin on longissimus muscle characteristics of pigs weighing 55 kilograms live weight", J. Anim. Sci, 66, pp.3279~3284 (1988)
- Stickland, N. C., "A possible indicator muscle for the content and growth characteristics of porcine muscle", Anim. Prod, 16, pp.135~146 (1973)
- Warner, R. D., "Muscle protein changes post mortem in relation to pork quality traits", Meat Sci, 45, pp.339~352 (1997)