• 제목/요약/키워드: carcass yield

검색결과 327건 처리시간 0.029초

Effects of Carcass Weight and Back-fat Thickness on Carcass Properties of Korean Native Pigs

  • Kim, Gye-Woong;Kim, Hack-Youn
    • 한국축산식품학회지
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    • 제37권3호
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    • pp.385-391
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    • 2017
  • Our study analyzed the carcass properties of 170 Korean native pigs in relation to carcass weight and back-fat thickness to provide general data for the production and distribution of high quality pig meat. The 70-74 kg group showed highest yield (73.41%). The ${\geq}80kg$ group showed the highest thickest back-fat (24.13 mm) (p<0.05). The ${\geq}80kg$ group showed the best quality grade (1.00). Back-fat thickness showed significant differences in the weight among groups (p<0.05). The ${\geq}25mm$ group showed the highest carcass weight (75.93 kg). The thickest back-fat group (${\geq}25mm$) showed the highest yield (73.03%). There were significant differences in back-fat thickness among groups (p<0.05), and the ${\geq}25mm$ group showed the highest thickness back-fat (27.60 mm). We found a strong positive correlation between carcass weight and back-fat thickness (r=0.346) as well as meat quality grade (r=0.739). Backfat thickness had a relatively strong positive correlation with meat quality grade (r=0.444). Therefore, there are required to manage the breeding through selection of excellent native species for increasing their carcass weight and enhance meat quality.

Genetic and phenotypic relationships of live body measurement traits and carcass traits in crossbred pigs of Korea

  • Do, Chang-Hee;Park, Chan-Hyuk;Wasana, Nidarshani;Choi, Jae-Gwan;Park, Su-Bong;Kim, Si-Dong;Cho, Gyu-Ho;Lee, Dong-Hee
    • 농업과학연구
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    • 제41권3호
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    • pp.229-236
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    • 2014
  • This study presents the estimates of heritabilities of body measurement traits and carcass traits, and genetic and phenotypic correlations of those traits for crossbred pigs in Korea. Body and ultrasound (A mode: Piglog 105) measurements in 221 pigs including body weight, length, height and width, three back fat thickness at the points of 4th, 14th rib and chine bone, eye muscle area and lean meat percent were collected at the ages of 70, 145 and 180 days and then slaughtered to measure carcass weight, back fat, belly, collar butt, spare rib, picnic shoulder, hind leg, loin, tenderloin, lean meat yield and intramuscular rough fat content in loin. Genetic analysis was done using a multi-trait animal model. Heritabilties of the body measurements were ranged from 0.331 to 0.559 and three measurements of back fat thickness were also high as range varying from 0.402 to 0.475 for the ages of 145 and 180 days. However, eye muscle area was moderate (0.296) at the age of 180 days. Heritabilities of retail cut yields were also high as ranged from 0.387 to 0.474 and of IMF content in loin was 0.499. Heritabilities of the cut percent traits were ranged from 0.249 to 0.488. Important positive genetic and phenotypic correlations were noted for all carcass yield traits (0.298 to 0.875 and 0.432 to 0.922, respectively). IMF showed low negative genetic correlations with carcass yield traits, such as carcass weight, picnic shoulder, hind leg, loin, tenderloin and lean meat yield whereas low positive genetic correlations with back fat, belly, collar butt and spare rib. Loin, tenderloin and lean meat percent showed negative genetic correlations with carcass weight, back fat thickness, collar butt, spare rib and picnic shoulder percent. The four body measurements at the ages of 70, 145 and 180 days had positive genetic correlations with belly, shoulder butt, spare rib, picnic shoulder and hind leg percent, but negative genetic correlations were shown with loin and tenderloin percent except body measurements at 70 days. The results suggest that carcass yield are negatively correlated with intramuscular fat content, which is a major factor deciding pork quality and the yield of loin and tenderloin are not increased as much as increase in body size. However, the proportions of belly and collar butt are increased with the body size. In conclusion, selection strategy should be designed according to the preference on composition of carcass in each country.

한우도체 육량등급 설정 연구 (Study on the Carcass Yield Grade of Hanwoo)

  • 이종문;유영모;박범영;채현석;김동훈;김용곤;최양일
    • Journal of Animal Science and Technology
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    • 제47권2호
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    • pp.261-270
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    • 2005
  • Total number of 237 Hanwoos were purchased from the nationwide fanns based on the different market weights and sex. After slaughtering, they were evaluated to estimate the productivity of carcass components by the sex and market weight, and to predict the beef carcass yield grade equation. The main results in this study were summarized as follows; With respect to carcass characteristics, the yield percentages were different(P < 0.01) among sex groups, but were not different among market weight groups. Sex or market weights showed significant effects on the carcass yield grade(YG) factors(BFT, RA, carcass weight(CW). The YG equation from this study could be expressed as a multiple regression y = 64.74 - 0.0198 ${\times}$ CW(kg) - 5.226 $\time$ BFT(cm)+0.1339 $\time$ RA($cm^2$ $R^2$ = 0.52 Among the YG factors, the BFT was the highest contributor to the YG equation. Compared the previous equation reported in 1992 with the equation from this study, the bias values between predicted value and the actual cutability were 9.17 and 2.39, respectively. In conclusion, the equation estimated from this study was more accurate in predicting the cutability than that from the previous equation reported in 1992.

Dietary L-carnitine Influences Broiler Thigh Yield

  • Kidd, M.T.;Gilbert, J.;Corzo, A.;Page, C.;Virden, W.S.;Woodworth, J.C.
    • Asian-Australasian Journal of Animal Sciences
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    • 제22권5호
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    • pp.681-685
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    • 2009
  • L-carnitine promotes mitochondrial ${\beta}$-oxidation of long chain fatty acids and their subsequent transport across the inner mitochondrial membrane. Although the role of L-carnitine in fatty acid metabolism has been extensively studied, its role in live performance and carcass responses of commercial broilers is less understood. The objective of this research was to determine if Lcarnitine fed at various levels in diets differing in CP and amino acids impacted on live performance and carcass characteristics of commercial broilers. Two floor pen experiments were conducted to assess the effect of dietary L-carnitine in grower diets. In Exp. 1, Ross${\times}$Hubbard Ultra Yield broilers were placed in 48 floor pens (12 birds/pen) and fed common diets to d 14. A two (0 or 50 ppm Lcarnitine) by three (173, 187, and 202 g/kg CP) factorial arrangement of treatments was employed from 15 to 35 d of age (8 replications/treatment). An interaction (p<0.05) in carcass yield indicated that increasing CP (187 g/kg) resulted in improved yield in the presence of L-carnitine. Increasing CP from 173 to 202 g/kg increased (p<0.05) BW gain and decreased (p<0.05) feed conversion and percentage abdominal fat. Feeding dietary L-carnitine increased back-half carcass yield which was attributable to an increase (p<0.05) in thigh, but not drumstick, yield relative to carcass. In Exp. 2, $Ross{\times}Ross$ 708 broilers were fed common diets until 29 d. From 30 to 42 d of age, birds were fed one of seven diets: i) 200 g/kg CP, 0 ppm L-carnitine; ii) 200 g/kg CP, 40 ppm L-carnitine; iii) 180 g/kg CP, 0 ppm L-carnitine; iv) 180 g/kg CP, 10 ppm L-carnitine; v) 180 g/kg CP, 20 ppm L-carnitine; vi) 180 g/kg CP, 30 ppm L-carnitine; and vii) 180 g/kg CP, 40 ppm L-carnitine (6 replications of 12 birds each). BW gain, feed conversion, mortality (30 to 42 d), and carcass traits (42 d) were measured on all birds by pen. There were no treatment differences (p<0.05). However, the addition of 40 ppm L-carnitine in the 200 g CP/kg diet increased (p = 0.06) thigh yields relative to BW in comparison to birds fed diets without L-carnitine, which was further confirmed via a contrast analysis (0 vs. 40 ppm L-carnitine in the 200 and 180 g CP/kg diets; p<0.05). These results indicated that dietary L-carnitine may heighten metabolism in dark meat of commercial broilers resulting in increased relative thigh tissue accretion without compromising breast accretion.

고도 및 수송거리별 출하 한우의 도체특성 및 표면육색의 변화 (Changes of Carcass Traits and Surface Meat Color of Korean Cattle (Hanwoo) Reared Different Altitudes or Transferred from Different Distance)

  • 장용설;최장근;이정우;곽돈규;성철완;안준상;박병기;이종인;신종서
    • Journal of Animal Science and Technology
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    • 제54권1호
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    • pp.51-58
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    • 2012
  • 본 연구는 고도 차이 혹은 수송 거리의 차이가 한우(거세우 및 암소)의 도체특성, 표면육색 및 혈중 cortisol 농도 변화에 미치는 영향을 검토하기 위해 실시되었다. 공시동물은 총 190두로 이중 거세한우는 118두 암소는 72두였다. 자료는 사육 고도(100, 200, 300, 400 및 500 m) 혹은 수송 거리(50, 100, 150, 200 및 250 km)에 따라 분석하였다. 사육 고도의 차이가 거세한우 및 암소의 육량 및 육질 형질 변화에 미치는 영향은 적었으며, 수송 거리의 차이가 거세한우 및 암소의 육량 형질에 미치는 영향은 없는 것으로 나타났다. 또한 수송 거리의 차이가 거세한우 및 암소의 근내지방도, 육색 및 지방색에 미치는 영향과 사육 고도 혹은 수송 거리의 차이가 거세한우 및 암소 등심의 명도, 적색도, 황색도, 선명도 및 색상색에 미치는 영향은 낮은 것으로 나타났다. 암소의 경우 사육고도 100 m에서 200 m에 비해 등심의 명도가 증가되었으며(p<0.05), 거세한우의 경우 수송 거리 250 km 그리고 암소의 경우에는 200 km에서 등심의 명도가 낮아지는 경향을 보였다. 한편, 혈중 cortisol 농도는 낮은 사육 고도에 비해 높은 사육 고도에서 낮아지는 경향을 보였으나, 통계적인 유의차는 없었다. 수송 거리가 거세한우 및 암소의 cortisol 농도에 미치는 영향은 없었다. 따라서 본 연구의 결과에서 사육 고도 혹은 수송 거리가 한우의 생산성에 미치는 영향은 적은 것으로 판단된다.

Productive performance of Mexican Creole chickens from hatching to 12 weeks of age fed diets with different concentrations of metabolizable energy and crude protein

  • Matus-Aragon, Miguel Angel;Gonzalez-Ceron, Fernando;Salinas-Ruiz, Josafhat;Sosa-Montes, Eliseo;Pro-Martinez, Arturo;Hernandez-Mendo, Omar;Cuca-Garcia, Juan Manuel;Chan-Diaz, David Jesus
    • Animal Bioscience
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    • 제34권11호
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    • pp.1794-1801
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    • 2021
  • Objective: The study aimed to evaluate the productive performance, carcass yield, size of digestive organs and nutrient utilization in Mexican Creole chickens, using four diets with different concentrations of metabolizable energy (ME, kcal/kg) and crude protein (CP, %). Methods: Two hundred thirty-six chickens, coming from eight incubation batches, were randomly distributed to four experimental diets with the following ME/CP ratios: 3,000/20, 2,850/19, 2,700/18 and 2,550/17. Each diet was evaluated with 59 birds from hatching to 12 weeks of age. The variables feed intake (FI), body weight gain (BWG), feed conversion (FC), mortality, carcass yield, size of digestive organs, retention of nutrients, retention efficiency of gross energy (GE) and CP, and excretion of N were recorded. Data were analyzed as a randomized block design with repeated measures using the GLIMMIX procedure of SAS, with covariance AR (1) and adjustment of degrees of freedom (Kendward-Roger), the adjusted means were compared with the least significant difference method at a significance level of 5%. Results: The productive performance variables BWG, mortality, carcass yield, fat and GE retention and excretion of N were not different (p>0.05) due to the diet effect. In the 3,000/20 diet, the chickens had lower values of FI, FC, crop weight, gizzard weight, retention, and retention efficiency of CP (p<0.05) than the chickens of the 2,550/17 diet. Conclusion: The Mexican Creole chickens from hatching to 12 weeks of age can be feed with a diet with 2,550 kcal ME and 17% CP, without compromising productive parameters (BWG, mortality, carcass yield) but improving retention and retention efficiency of CP.

제주재래돼지의 성별 및 도체등급에 따른 도체특성 분석 (Analysis of Carcass Characteristics by Gender and Carcass Grades of Jeju Native Pigs)

  • 김계웅;유재영;김건중;이종완;김영봉;민근홍;김석은
    • Journal of Animal Science and Technology
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    • 제52권4호
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    • pp.313-318
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    • 2010
  • 본 연구는 도체등급을 판정받은 제주재래돼지 168두(거세돈 116두와 암퇘지 52두)를 공시돈으로 재래돼지의 성별, 도체 육질 등급별 및 육량등급별 도체특성을 조사하여 고급돈육 생산에 필요한 기초자료를 얻고자 실시하였다. 재래돼지의 도체특성의 평균치는 도체중이 72.94 kg, 도체율 72.46%, 등지방두께 20.98 mm, Hunter L* 값 38.14, a* 값 4.68, b* 값 6.04, pH 5.61, 육색도 3.61, 근내지방도 3.36, 육질등급 1.83, 그리고 육량등급 2.08로 조사되었다. 성별 도체특성에서 도체중은 암퇘지가 75.69 kg으로 거세돈 71.71 kg 보다 유의하게 무거웠으나(p<0.05), 도체율, 등지방두께, 그리고 육색도에서는 성별 간에 모두 유의한 차이가 없었다. pH는 암퇘지와 거세돈에서 각각 5.58과 5.62로 거세돈이 유의하게 높게 나타났다(p<0.05). 도체육질등급에서는 거세돈과 암퇘지의 평균등급은 1.95와 1.58로 거세돈이 유의하게 높은 등급을 보였다(p<0.05). 그리고 육량등급에서도 성별 간에 유의한 차이를 보였는데(p<0.05), 거세돈 1.90 등급보다 암퇘지 2.50 등급으로 암퇘지가 높게 나타났다. 도체 육질등급별 도체특성에서는 도체중은 도체등급이 높을수록 유의하게 무거운 것으로 나타났으며(p<0.05), 도체율에서도 도체육질등급이 높을수록(1과 2등급) 유의하게 높은 것으로 나타났다(p<0.05). 등 지방 두께는 등급 간에 유의한 차이를 보였는데(p<0.05), 등급이 높을수록 등지방 두께가 높았다. 육색도에서는 등급 간에 Hunter L* 값, a* 값, b* 값 모두 유의한 차이를 보이지 않았다. 근내지방도는 1등급은 4.06점과 3등급은 2.64점으로 등급이 높을수록(양호) 유의하게(p<0.05) 높은 점수를 보였다. 도체 육량등급별 도체특성에서 도체중과 도체율은 등급 간에 모두 유의한 차이를 보였는데(p<0.05), 등급이 높을수록(A 등급) 체중이 무겁고 도체율이 높은 것으로 나타났다. 등지방두께는 A 등급은 22.83 mm로 유의하게 높은(p<0.05) 반면에, D 등급은 18.63 mm로 등급이 낮을수록 등 지방두께도 얇았다. 육색도는 Hunter L* 값, a* 값, b* 값 모두 등급 간에 유의한 차이가 발견되지 않았으나, pH 값은 A 등급에서 5.53으로 하위등급보다 유의하게 높은 것으로 나타났다(p<0.05). 육색도판에 의한 육색도에서도 유의한 차이를 보였다(p<0.05). 근내지방도는 등급 간에 유의한 차이를 보였는데(p<0.05), 상위 A, B 등급에서는 4.00 이상으로 높았으나, 하위 C와 D 등급에서는 3.06 이하의 낮은 점수로 나타났다. 따라서 제주 재래종은 개량종보다 등지방두께는 양호하였으나, 육질과 관련된 특성을 더욱 더 심도있는 비교연구로 정확한 평가가 이루어져야 할 것으로 생각된다.

Genetic Parameter Estimates of Carcass Traits under National Scale Breeding Scheme for Beef Cattle

  • Do, ChangHee;Park, ByungHo;Kim, SiDong;Choi, TaeJung;Yang, BohSuk;Park, SuBong;Song, HyungJun
    • Asian-Australasian Journal of Animal Sciences
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    • 제29권8호
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    • pp.1083-1094
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    • 2016
  • Carcass and price traits of 72,969 Hanwoo cows, bulls and steers aged 16 to 80 months at slaughter collected from 2002 to 2013 at 75 beef packing plants in Korea were analyzed to determine heritability, correlation and breeding value using the Multi-Trait restricted maximum likelihood (REML) animal model procedure. The traits included carcass measurements, scores and grades at 24 h postmortem and bid prices at auction. Relatively high heritability was found for maturity ($0.41{\pm}0.031$), while moderate heritability estimates were obtained for backfat thickness ($0.20{\pm}0.018$), longissimus muscle (LM) area ($0.23{\pm}0.020$), carcass weight ($0.28{\pm}0.019$), yield index ($0.20{\pm}0.018$), yield grade ($0.16{\pm}0.017$), marbling ($0.28{\pm}0.021$), texture ($0.14{\pm}0.016$), quality grade ($0.26{\pm}0.016$) and price/kg ($0.24{\pm}0.025$). Relatively low heritability estimates were observed for meat color ($0.06{\pm}0.013$) and fat color ($0.06{\pm}0.012$). Heritability estimates for most traits were lower than those in the literature. Genetic correlations of carcass measurements with characteristic scores or quality grade of carcass ranged from -0.27 to +0.21. Genetic correlations of yield grade with backfat thickness, LM area and carcass weight were 0.91, -0.43, and -0.09, respectively. Genetic correlations of quality grade with scores of marbling, meat color, fat color and texture were -0.99, 0.48, 0.47, and 0.98, respectively. Genetic correlations of price/kg with LM area, carcass weight, marbling, meat color, texture and maturity were 0.57, 0.64, 0.76, -0.41, -0.79, and -0.42, respectively. Genetic correlations of carcass price with LM area, carcass weight, marbling and texture were 0.61, 0.57, 0.64, and -0.73, respectively, with standard errors ranging from ${\pm}0.047$ to ${\pm}0.058$. The mean carcass weight breeding values increased by more than 8 kg, whereas the mean marbling scores decreased by approximately 0.2 from 2000 through 2009. Overall, the results suggest that genetic improvement of productivity and carcass quality could be obtained under the national scale breeding scheme of Korea for Hanwoo and that continuous efforts to improve the breeding scheme should be made to increase genetic progress.

한우의 도체 형질이 경제성에 미치는 영향 (The Effect of Carcass Traits on Economic Values in Hanwoo)

  • 이중재;최승덕;당창권;강석남;김내수
    • 한국축산식품학회지
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    • 제31권4호
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    • pp.603-608
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    • 2011
  • 본 연구는 한우 농가의 소득에 직접적인 영향을 미치는 경매단가(AP) 및 도체판매가(CP)에 영향을 미치는 도체 특성(근내지방도(MS), 배최장근단면적(LMA), 등지방 두께(BFT), 도체중(CW) 및 육량 지수(MYI))와의 상관관계를 조사하였다. AP의 경우는 근내지방도(MS)가 가장 높은 상관(r=0.73)을 나타내었으며, CP는 도체중이 0.71로 가장 높고, 다음으로 근내지방도가 영향력이 높게 나타났다. 하지만, LMA, MYI는 비교적 낮은 상관을 나타내었다. 이상의 결과 농가의 소득의 향상과 한우의 MS 및 CW 향상이 유의적인 상관도가 있었다.

초음파 측정에 의한 한우의 도체육량 예측 (Prediction of Carcass Yield by Ultrasound in Hanwoo)

  • 이용준;전기준;최성복;석홍기;김석중;이성기;송영한
    • Journal of Animal Science and Technology
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    • 제45권2호
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    • pp.335-342
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    • 2003
  • 본 시험은 초음파를 이용한 한우의 도체육량등급 예측율을 향상시키기 위하여 24개월령 거세한우 573두를 대상으로 출하직전에 체중측정과 함께 실시간 초음파 진단기를 이용하여 도체형질을 측정하였다. 초음파 측정치와 도체 실측치와의 비교분석에서 도출된 다양한 육량예측 기법을 이용하여 도체육량등급을 예측하였고, 그 결과를 요약하면 다음과 같다. 등지방 두께와 배최장근 단면적의 도체 실측치와 초음파 측정치간의 차이는 각각 0.6$\pm$1.65mm와 0.7$\pm$5.56cm2로 나타났다. 등지방 두께 및 배최장근 단면적의 초음파 측정치와 도체 실측치간의 상관계수는 각각 0.86 및 0.82로 높게 나타났다(p<0.001). 도체육량등급 예측율은 육량지수 산식, 등지방 보정식, 중회귀 분석 및 의사결정나무 분석에서 각각 80.3%, 81.3%, 80.1% 및 81.8%를 보여, 의사결정나무 분석이 예측율과 활용성이 가장 높은 것으로 나타났다.