• 제목/요약/키워드: LYD

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Physicochemical properties of M. longissimus dorsi of Korean native pigs

  • Kim, Gye-Woong;Kim, Hack-Youn
    • Journal of Animal Science and Technology
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    • 제60권3호
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    • pp.6.1-6.5
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    • 2018
  • Background: The meat quality of Korean native pigs (KNP) and crossbred pigs (LYD; Landrace ${\times}$ Yorkshire ${\times}$ Duroc) was examined to generate data useful for selecting native pigs for improved pork production. Methods: Fifty Korean native pigs (KNP) and 50 crossbred pigs (LYD) were tested. Loin samples (M. longissimus dorsi) of the two breeds were analyzed to determine meat quality and sensory properties. Result: KNP had a higher moisture content than LYD (p < 0.05); however, it had significantly lower crude fat and ash content than that of LYD (p < 0.001). KNP had significantly higher shear force than LYD (p < 0.01). KNP also showed significantly higher cooking loss than LYD (p < 0.05). KNP had a lower $L^*$ value than LYD (p < 0.05); however, it had a markedly higher $a^*$ and $b^*$ value than LYD (p < 0.001). KNP showed significantly higher linoleic acid, linolenic acid, and arachidonic acid content than LYD (p < 0.05). Although KNP had significantly better flavor and overall palatability than LYD, it was less tender than LYD (p < 0.01). Conclusion: KNP had a markedly higher $a^*$ value than LYD. KNP had significantly higher shear force than LYD. The total unsaturated fatty acid content was higher in KNP than in LYD.

Comparison of physicochemical traits of dry-cured ham from purebred Berkshire and crossbred Landrace × Yorkshire × Duroc (LYD) pigs

  • Yim, Dong-Gyun;Jung, Jong-Hyun;Ali, Md. Mhahbbat;Nam, Ki-Chang
    • Journal of Animal Science and Technology
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    • 제61권1호
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    • pp.35-40
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    • 2019
  • This study was conducted to compare the physicochemical traits of dry-cured hams made from two different pig breeds: Berkshire and $Landrace{\times}Yorkshire{\times}Duroc$ (LYD). Pigs were slaughtered at a live weight of approximately 110 kg and cooled at $0^{\circ}C$ for 24 h in a chilling room. Then, the ham portion of the carcasses were cut and processed by dry-curing for physicochemical analyses. The dry-cured hams from Berkshire contain higher crude protein, fat, and ash level than those from LYD, whereas the hams from LYD had higher moisture contents than those from Berkshire(p < 0.05). The pH values of the hams from Berkshire were lower than those from LYD (p < 0.05). The hams from Berkshire had lower $L^*$ and $b^*$ values than those from LYD (p < 0.05). Palmitoleic acid (C16:1), oleic acid (C18:1), elaidic acid (C18:1t), monounsaturated fatty acids, and ratio of n-6 and n-3 fatty acids (n-6/n-3) in the ham from Berkshire were higher than LYD (p < 0.05). Free amino acids such as aspartic acid, threonine, serine, asparagine, glutamic acid, and lysine in hams from Berkshire were higher than those from LYD (p < 0.05). The microbial population had no significant difference between Berkshire and LYD dry-cured ham. The cross sections of dry cured ham showed difference from different breeds using scanning electron microscope and indicates some differences in texture. Considering the meat quality parameters of ham, hams from Berkshire could provide variety of ham for consumer who are seeking various different qualities and stories.

돼지의 교잡방법이 육의 품질에 미치는 영향 (Effects of Crossbreed Method on Meat Quality in Pigs)

  • 진상근;김일석;송영민;허선진;하지희;하경희
    • Journal of Animal Science and Technology
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    • 제47권3호
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    • pp.457-464
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    • 2005
  • A total of 80 pigs were used to investigate the effect of crossbred method on meat quality. Crossbred pigs were alloted into one of two experimental groups[T1 : Landrace ${\times}$ Yorkshire ${\times}$ Duroc(LYD) and T2: Yorkshire ${\times}$ Berkshire ${\times}$ Berkshire(YBB)]. Crossbred pigs were slaughtered at approximately 110kg live weight, and pH, cooking loss, texture, shear force, color(CIE $L^*$ $a^*$ $b^*$), fatty acid composition and sensory evaluation were measured in pork loin. Crude fat percentage was higher in YBB, whereas protein was higher in LYD than that for the other groups. Shear force was lower in YBB than LYD, but, pH and water-holding capacity were not significantly different. In meat color, $L^*$ was higher in YBB than LYD, whereas $a^*$ and $b^*$ were not significantly different between breeds. Hardness, adhesiveness and gumminess of YBB were significantly lower than LYD. Saturated fatty acid of YBB was lower than that for LYD and essential fatty acid was higher in YBB. In sensory evaluation of cooked meat, color, marbling score and overall acceptability were significantly higher in YBB, Aroma, flavor, taste, juiciness and overall acceptability of YBB were significantly higher than LYD in fresh meat. In conclusion, the overall meat quality was better in YBB than that for LYD.

Meat Quality and Physicochemical Trait Assessments of Berkshire and Commercial 3-way Crossbred Pigs

  • Subramaniyan, Sivakumar Allur;Kang, Da Rae;Belal, Shah Ahmed;Cho, Eun-So-Ri;Jung, Jong-Hyun;Jung, Young-Chul;Choi, Yang-Il;Shim, Kwan-Seob
    • 한국축산식품학회지
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    • 제36권5호
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    • pp.641-649
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    • 2016
  • In this study, we compared qualities and physiochemical traits of meat from Berkshire (black color) pigs with those of meat from 3-way Landrace (white color) × Yorkshire (white color) × Duroc (red color) crossbred pigs (LYD). Meat quality characteristics, including pH, color, drip loss, cooking loss, and free amino acid, fatty acid, vitamin, and mineral contents of longissimus dorsi muscles, were compared. Meat from Berkshire pigs had deeper meat color (redness), higher pH, and lower drip loss and cooking loss than meat from LYD pigs. Moreover, meat from Berkshire pigs had higher levels of phosphoserine, aspartic acid, threonine, serine, asparagine, α-aminoadipic acid, valine, methionine, isoleucine, leucine, tyrosine, histidine, tryptophan, and carnosine and lower levels of glutamic acid, glycine, alanine, and ammonia than did meat from LYD pigs. The fatty acids oleic acid, docosahexaenoic acid (DHA), and monounsaturated fatty acids (MUFA) were present in significantly higher concentrations in Berkshire muscles than they were in LYD muscles. Additionally, Berkshire muscles were significantly enriched with nucleotide components (inosine), minerals (Mg and K), and antioxidant vitamins such as ascorbic acid (C) in comparison with LYD muscles. In conclusion, our results show that in comparison with LYD meat, Berkshire meat has better meat quality traits and is a superior nutritional source of all essential amino acids, monounsaturated fatty acids, vitamin C, and minerals (Mg and K).

두 가지 삼원교잡종 (랜드레이스 × 요크셔 × 두록 및 랜드레이스 × 요크셔 × 우리흑돈)의 육질특성 비교 (Comparison of Meat Quality Characteristics of Two Different Three-way Crossbred Pigs (Landrace × Yorkshire × Duroc and Landrace × Yorkshire × Woori black pig))

  • 김정아;조은석;이미진;정용대;최요한;조규호;정학재;백선영;김영신;사수진;홍준기
    • 한국산학기술학회논문지
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    • 제20권10호
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    • pp.195-202
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    • 2019
  • 본 연구는 외화 낭비를 줄이기 위해 우리흑돈이 종료종모돈으로써 두록을 대체할 수 있는지 조사하고자 하였다. 본 논문에서는 랜드레이스 ${\times}$ 요크셔 ${\times}$ 두록(LYD)과 랜드레이스 ${\times}$ 요크셔 ${\times}$ 우리흑돈(LYW)의 두 삼원교잡종에서 등심의 육질 특성을 비교하기 위해 이화학적 분석을 실시하였다. 공시 동물은 180일령의 LYD 59두와 LYW 60두, 총 119두를 이용하였으며, 도축 후 24시간 동안 냉각시키고, 돈육에 대한 이화학적 분석, 육색, 지방산 조성 및 관능평가를 실시하였다. 일반 성분 결과 수분 및 보수력은 두 품종간의 유의한 차이를 나타내지 않았다. 지방 함량 및 가열감량은 LYW에서 LYD에 비해 유의적으로 높게 나타났고(p<0.05), 전단력 및 pH는 LYW가 LYD보다 유의적으로 낮게 나타났다(p<0.05). 육색지수를 확인한 결과 적색도($a^*$) 및 황색도($b^*$)가 LYW에서 유의적으로 높게 나타났다(p<0.05). 두 품종의 지방산 함량을 비교한 결과 Stearic acid(C18:0)가 LYD에 비해 LYW에서 유의적으로 높게 나타났다(p<0.05). 관능검사 결과 LYW가 LYD에 비해 육색과 풍미가 유의적으로 높게 나타났다(p<0.05). 이러한 결과는 LYD와 비교하여 LYW에서 특정 화학적 특징이 개선되었음을 나타낸다. 따라서 우리흑돈이 수입 종돈인 두록의 대체 종돈으로 사용 가능할 것으로 사료된다.

Comparison of Meat Quality and Fatty Acid Composition of Longissimus Muscles from Purebred Pigs and Three-way Crossbred LYD Pigs

  • Choi, Yeong-Seok;Lee, Jin-Kyu;Jung, Ji-Taek;Jung, Young-Chul;Jung, Jong-Hyun;Jung, Myung-Ok;Choi, Yang-Il;Jin, Sang-Keun;Choi, Jung-Seok
    • 한국축산식품학회지
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    • 제36권5호
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    • pp.689-696
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    • 2016
  • This study was conducted to find pork quality to meet the needs of consumers. Thus, the meat quality and fatty acid composition of longissimus muscles from purebred pigs (Landrace, Yorkshire, and Duroc) and three-way crossbred LYD pigs were compared and evaluated. Chemical compositions of longissimus muscles were significant (p<0.05) different among pigs. Duroc contained significant (p<0.05) higher fat contents than other pigs, whereas significant (p<0.05) higher moisture contents were observed in Landrace, Yorkshire, and LYD pigs compared to those of Duroc pigs. The values of pH24 h and pH14 d were the highest in Landrace pigs. Myoglobin contents of LYD pigs were higher (p<0.05) than those of purebred pigs. Regarding meat color, Duroc and Yorkshire pigs had higher redness values than Landrace and LYD pigs, while Landrace pigs had the lowest (p<0.05) color values among all pigs. There was no significant difference in shear force or water holding capacity (WHC). Duroc pigs maintained the lowest drip loss during 14 d of cold storage. In sensory evaluation, the marbling scores of Duroc pigs were higher (p<0.05) than other pigs. Regarding fatty acid compositions, total USFA, poly-, n-3, and n-6 contents were the highest (p<0.05) in LYD pigs, while total SFA contents were the highest (p<0.05) in Duroc pigs. Based on these results, purebred pigs had superior overall meat quality to crossbred pigs.

Influences of Aging Methods and Temperature on Meat Quality of Pork Belly from Purebred Berkshire and Crossbred Landrace×Yorkshire×Duroc (LYD) Pigs

  • Jin, Sang-Keun;Yim, Dong Gyun
    • 한국축산식품학회지
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    • 제42권3호
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    • pp.398-410
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    • 2022
  • We studied effects of aging methods and temperature on the physical, chemical, and amino acid composition of pork belly from Berkshire and Landrace×Yorkshire×Duroc (LYD) swine. Pork belly samples were assigned randomly to breed groups (Berkshire and LYD), aging temperature groups (0℃ and 9℃), and aging method groups. One samples of vacuum-packaged hanging pork bellies were hung in a refrigerated cooler with 83±2.0% humidity, while the other samples were immersed in a 3.5% salt solution in a vacuum package and subsequently stored in the same cooler for 2 weeks. LYD pork had lower pH and purge loss and higher lightness values than those of Berkshire pork (p<0.05). Moreover, thiobarbituric acid reactive substances and hardness values of LYD pork were lower than those of Berkshire pork after aging (p<0.05). Berkshire pork had a higher level of flavorful amino acids than LYD pork did during aging (p<0.05). Bellies aged at elevated temperatures for two weeks had higher volatile basic nitrogen. However, significantly higher percentages of flavorful and sweet taste amino acids were observed in bellies aged at 9℃ compared to those aged at 0℃ for 2 weeks. Moisture content was higher in immersed samples than hanging samples after two weeks of aging (p<0.05). Hanging pork bellies exhibited higher texture profiles than immersed pork bellies at two weeks (p<0.05). We concluded that breeds, aging temperature, and methods affected most quality attributes of pork belly.

돼지 품종이 등심의 일반성분, 물리화학적, 콜레스테롤, 아미노산, 지방산 조성 및 관능적 품질 특성에 미치는 영향 (The Effects of Pig Breeds on Proximate, Physicochemical, Cholesterol, Amino Acid, Fatty Acid and Sensory Properties of Loins)

  • 김일석;진상근;김철욱;송영민;조광근;정기화
    • Journal of Animal Science and Technology
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    • 제50권1호
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    • pp.121-132
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    • 2008
  • [Landrace×Yorkshire]×Duroc(LYD) 및 [Yorkshire×Berkshire]×Berkshire(YBB) 삼원교잡종과 흑색계 영국 Berkshire(BB; British berkshire), 가고시마 Berkshire(KB; Kagoshima Berkshire), [재래돼지×멧돼지(KNW; Native black pig×Wild boars)] 이원교잡종에서 생산된 돼지 100두를 생체중 110 kg 도달시 도축한 후 등심을 채취하여 분석하였다. 수분 함량은 KW, 조단백질은 YBB와 KW, 콜레스테롤 함량은 YBB가 다른 품종들보다 유의적으로 높았다(p<0.05). 다른 품종들에 비해 YBB는 보수력과 pH는 낮고, 전단가는 높았다(p<0.05). LYD에서 명도(L*)가 유의적으로 높게 나타났으며(p<0.05), 적색도(a*)와 파쇄성에서는 품종들 간에 유의적인 차이가 없었다(p>0.05). UFA/SFA와 EFA/UFA 비율과 EAA은 KW가 높게 나타났으나(p<0.05) SAAA는 유의적으로 낮았다(p<0.05). 총 아미노산 함량은 LYD와 BB가 각각 20.44%, 20.81%로 다른 품종에 비해 유의적으로 많았다(p<0.05). 신선육 상태에서 품종은 육색, 드립로스, 마블링과 전체적인 기호도에 영향을 미쳤지만(p<0.05), 조리육의 경우 풍미를 제외한 관능검사 항목에는 영향을 미치지 않았다(p>0.05).

Effects of Sex and Breed on Meat Quality and Sensory Properties in Three-way Crossbred Pigs Sired by Duroc or by a Synthetic Breed Based on a Korean Native Breed

  • Kim, Yong Min;Choi, Tae Jeong;Cho, Kyu Ho;Cho, Eun Seok;Lee, Jung Jae;Chung, Hak Jae;Baek, Sun Young;Jeong, Yong Dae
    • 한국축산식품학회지
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    • 제38권3호
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    • pp.544-553
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    • 2018
  • This study was conducted to determine the effects of breed and sex on meat quality and sensory properties of the loin in three-way crossbred pigs: $Landrace{\times}Yorkshire{\times}Duroc$ (LYD) and $Landrace{\times}Yorkshire{\times}Woori$ (LYW) black pig synthesized by Korean native breed. Carcass traits did not differ by breed. Carcass weight and backfat thickness were higher in castrates than in gilts (p<0.01). LYW showed significant high values in fat content, cooking loss, and water-holding capacity (WHC) than LYD (p<0.05). Redness and yellowness of the meat were higher in LYW than in LYD (p<0.01). Further, LYW had lower pH and shear force than LYD (p<0.001). Significant high scores in color and flavor were obtained in LYW or gilts compared to LYD or castrates by sensory panel, respectively (p<0.05). However, other sensory traits did not differ by breed or sex. Capric acid (C10:0) was higher in LYD than LYW (p<0.001). However, stearic acid (C18:0) and saturated fatty acid (SFA) contents were higher in LYW than LYD (p<0.05). Eicosenoic acid (C20:2) and the n6/n3 ratio were higher in gilts than in castrates, whereas SFA content was higher in castrates than in gilts. These results suggest that certain physicochemical qualities of meat and sensory properties are improved in LYW compared to LYD. This study could provide basic data on meat quality of crossbred pigs with Woori black pig as a terminal sire.

Carcass trait, meat yield and quality characteristics of recently-synthesized Woori Heukdon and commercial LYD pigs under identical rearing condition

  • Van-Ba Hoa;Dong-Heon Song;Ye-Jin Min;Kuk-Hwan Seol;Sun-Moon Kang;Hyun-Wook Kim;Sung-Sil Moon;Soo-Hyun Cho
    • Animal Bioscience
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    • 제36권6호
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    • pp.943-952
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    • 2023
  • Objective: For decades, LYD ([Landrace×Yorkshire] ♀×Duroc ♂) pigs are the most commonly-used commercial breed for meat production in Korea. Recently, due to the increasing demand for premium pork, the National Institute of Animal Science (Korea) has synthesized a novel pig breed named Woori Heukdon (WHD). This study aimed at comparing the carcass traits, meat yield and quality characteristics between the LYD and WHD pigs under identical rearing condition. Methods: The WHD and LYD pigs (n = 15 each) were reared under identical conditions and fed the same commercial diet until reaching recommended market weight (100 to 120 kg). After slaughter, the carcasses were evaluated for traits and meat yield, and the meat quality was assessed on shoulder butt and belly cuts. Results: Although no significant differences (p>0.05) occurred in slaughter weight between two pig types, WHD had a lower meat yield (by about 6 kg corresponding to approximately 7%) compared to the LYD pigs (p<0.05). The WHD had a higher fat content (by 4.26% and 13.52% in the shoulder butt and belly, respectively) compared to those of LYD pigs (p<0.05). The WHD meat showed a lower cooking loss and higher a* (redness) value (p<0.05). The WHD belly had a significantly (p<0.05) higher oleic acid content and concentrations of nonanal, octanal and decanal associated with fatty odor while, the LYD meat had a higher number of pyrazines associated with roasty odor. Regarding sensory quality, higher flavor, juiciness, and acceptability higher scores were given for the WHD meat than for the LYD meat (p<0.05). Conclusion: Under identical rearing conditions the WHD exhibited a better meat quality and sensory properties. However, the use of this diet resulted in a high fat level that may be associated with high trimming loss for the WHD.