• Journal of Animal Science and Technology
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• 제65권2호
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• pp.412-426
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• 2023

Currently, pigs breed in Korea are LYD (Landrace × Yorkshire × Duroc) crossbred pigs. Pigs used as fresh meat are gilts and barrows. However, the current supply of pork is not satisfying Korean consumers. In addition, the comparison of carcasses between gilts and barrows only studies carcass weight, backfat thickness, or meat quality, and there are very few studies comparing carcass characteristics. The purpose of this study was to compare characteristics of 7 primal cuts of gilts and barrows as measured by AutoFom III. A total of 350,179 pigs were used, including 176,461 gilts and 173,718 barrows. Characteristics of seven primal cuts were measured using AutoFom III. In the case of carcass weight, there was no significant difference in grade 1+. For all other survey items except for grade 2, gilts showed significantly (p < 0.05) higher values. For all grades except for pork belly, amounts of the remaining six primal cuts were higher in gilts (all p < 0.05,). In addition, the ratio of intermuscular fat in the pork belly of barrows showed a higher value than that in the pork belly of gilts (p < 0.05). The amount of pork belly, which is the most popular among consumers in Korea, not only produced more production than gilts in barrows, but also showed a higher value than gilts in barrows for the ratio of intermuscular fat affecting taste. In summary, gilts produced higher yields than barrows in all parts except pork belly. For the production of only pork belly, barrows showed higher production than gilts.

• 농업과학연구
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• 제43권4호
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• pp.581-588
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• 2016

The objective of this study was to investigate the accuracy of visual discrimination of soft fat pork carcasses when subjecting carcasses to quality grade evaluations. In addition, the quality of the longissimus dorsi muscle from soft fat carcasses was investigated. Iodine values of back fat from soft fat carcasses evaluated by visual discrimination were significantly higher than those from firm fat carcass (p < 0.05). However, those values were lower than the standard for soft fat (iodine value = 70). There were no significant differences in linoleic acid content, b-values, and L-values (p < 0.05) of back fat between firm and soft fat carcasses evaluated by visual discrimination. Color of longissimus dorsi muscle from soft fat carcasses (iodine value higher than 70) was not different from that of firm fat carcass (iodine value lower than 70). Except for linoleic acid, there were no significant differences in any fatty acid contents between longissimus dorsi muscles from firm fat and soft fat carcasses. Monounsaturated fatty acid content of longissimus dorsi muscles from soft fat carcasses was significantly lower than those of firm fat carcass (p < 0.05). However polyunsaturated fatty acid content was significantly higher (p < 0.05) in longissimus dorsi muscles from soft fat carcasses. In conclusion, visual discrimination results for soft fat pork carcass were inaccurate. Therefore, other indicators should be required to evaluate soft fat pork carcasses. In contrast, the quality of longissimus dorsi muscle from soft fat carcasses was superior in terms of fatty acid composition compared with that of firm fat carcasses.

• Asian-Australasian Journal of Animal Sciences
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• 제26권7호
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• pp.905-910
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• 2013

This study was performed to determine the influence of pig breed and gender on the ultimate pH and physicochemical properties of pork. The correlations between pH and pork quality traits directly related to carcass grade, and consumer's preference were also evaluated. The pH and meat grading scores for cold carcasses of 215 purebred pigs (Duroc, Landrace, and Yorkshire) from four different farms were obtained. Meat quality parameters of the pork loin were analyzed. Duroc and female animals were more affected compared to other breeds and male pigs. Duroc animals had the highest ultimate pH, carcass back fat thickness, marbling scores, yellowness, and fat content (p<0.05). Landrace pigs had the highest color lightness and cooking loss values (p<0.05). Among all trait parameters, marbling scores showed the highest significant differences when evaluating the impact of breed and gender on meat quality characteristics (p<0.001). Ultimate pH was positively correlated with carcass weight (0.20), back fat thickness (0.19), marbling score (0.17), and color score (0.16) while negatively correlated with cooking loss (-0.24) and shear force (-0.20). Therefore, pork samples with lower ultimate pH had lower cooking loss, higher lightness, and higher shear force values irrespective of breed.

• Animal Bioscience
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• 제36권8호
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• pp.1156-1166
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• 2023

Objective: Pork belly is a cut of meat with high worldwide demand. However, although the belly is comprised of multiple muscles and fat, unlike the loin muscle, research on their genetic parameters has yet to focus on a representative cut. To use swine breeding, it is necessary to estimate heritability against pork belly traits. Moreover, estimating genetic correlations is needed to identify genetic relationship among the traditional carcass and meat quality traits. This study sought to estimate the heritability of the carcass, belly, and their component traits, as well as the genetic correlations among them, to confirm whether these traits can be improved. Methods: A total of 543 Yorkshire pigs (406 castrated males and 137 females) from 49 sires and 244 dam were used in this study. To estimate genetic parameters, a total of 12 traits such as lean meat production ability, meat quality and pork belly traits were chosen. The heritabilities were estimated by using genome-wide efficient mixed model association software. The statistical model was selected so that farm, carcass weight, sex, and slaughter season were fixed effects. In addition, its genetic parameters were calculated via MTG2 software. Results: The heritability estimates for the 7th belly slice along the whole plate and its components were low to moderate (0.07±0.07 to 0.33±0.07). Moreover, the genetic correlations among the carcass and belly traits were moderate to high (0.28±0.20 to 0.99±0.31). Particularly, the rectus abdominis muscle exhibited a high absolute genetic correlation with the belly and meat quality (0.73±52 to 0.93±0.43). Conclusion: A moderate to high correlation coefficient was obtained based on the genetic parameters. The belly could be genetically improved to contain a larger proportion of muscle regardless of lean meat production ability.

• 한국축산식품학회지
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• 제35권1호
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• pp.80-85
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• 2015

This study was performed to investigate the carcass composition and pork quality of Duroc breeding lines in Korea. A total of 200 Duroc pigs were used, and those were originated from four different great-grandparent (GGP) breeding stock farms (L1: N farm, L2: W farm, L3: S farm, L4: R farm). The carcasses of pigs from these farms were collected, and meat quality traits were evaluated. L1 and L2 had smaller carcass weights and thin backfat, whereas L3 and L4 had heavy carcass weights and thick backfat. L3 and L4 had higher contents of fat and protein than L1 and L2. For the meat quality characteristics, L1, L2, and L4 had higher pH values than L3. In addition, L4 had higher water holding capacity than the other lines. L4 had the highest sensory evaluation scores with regard to both juiciness and flavor. Consequently, the study results indicate that pork quality information from domestic Duroc breeding stock lines could be used to effectively improve pork quality in Korea.

• Asian-Australasian Journal of Animal Sciences
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• 제19권3호
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• pp.402-405
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• 2006

This experiment was conducted to determine the effect of dietary betaine (0, 0.125%) on performance, carcass composition, pork quality and hepatic betaine-homocysteine methyltransferase (BHMT) activity of crossbred finishing barrows. Three replicates of ten pigs were used for each treatment. The results showed that average daily gain, feed intake and feed conversion were not affected by betaine. Compared with the control group, pigs treated with betaine had a 8.17% (p<0.05) decrease in carcass fat percentage, and a 8.84% (p<0.05) reduction in 10th-rib backfat thickness, but dressing percentage, percentage lean, longissimus muscle area, and average backfat thickness were not affected. There were also no significant differences in muscle color score, marbling score, pork pH value and water loss rate between the control and betaine-treated groups. Hepatic betaine-homocysteine methyltransferase (BHMT) activity was significantly increased by 13.97% (p<0.05) when pigs were offered 0.125% betaine.

• 한국축산식품학회지
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• 제22권4호
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• pp.337-342
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• 2002

인삼 잎과 줄기의 crude saponin 함량은 약 8% 정도로 그 가치가 높아 사료로 이용하기 위한 방법으로, 인삼 잎과 줄기 부산물의 추출액을 사료에 3% 혼합하여 생산한 사료를 돼지에 20일, 30일 및 40일간 급여하여 생산한 돼지의 도체 및 육질특성을 조사한 결과 다음과 같다. 급여수준에 따른 돼지의 도체특성에 있어서 정육율은 20일 급여구가 65.55%로 가장 높았으며, 대조구, 30일 급여구, 40일 급여구 순으로 나타났으며, 제거 지방율은 40일 급여구가 18.32%로 가장 높았다. 부분육벽 생산율은 목심, 갈비, 등심, 삼겹살, 뒷다리, 안심부위에서는 처리간에 유의적인 차이가 나타나지 않았으나, 앞다리 부위에서는 20일급여구에서 가장 높은 11.12%로 나타났다(P<0.05). 처리별 도체등급 A 및 B 등급 출현율은 30일과 40일 급여구에서 오히려 낮게 나타났으며, 등지방 두께는 20일 급여구가 가장 적었다(P<0.05). 처리구별 명도(Hunter L)는 30일 급여구가 50.22로 가장 높은 값을 보였고, 20일 급여구가 46.91로 가장 낮은 값을 보였다. PSE 출현율은 20일 급여구가 가장 낮게 나타났고. pH는 인삼부산물을 40일 급여한 처리구에서 5.72로 가장 높게 나타났다(P<0.05). 인삼부산물 급여 돼지 등심육의 물리적 특성을 조사한 결과, 전단력은 유의적인 차이는 없었으며, 가열감량은 인삼부 산물 급여시 감소하는 경향으로 나타난 반면, 보수력은 인삼 부산물 급여시 증가하는 경향을 보였다(P<0.05). 이상의 결과에서 인삼부산물 추출액 급여에 의한 돈육 생산시 도체특성 및 부된육 수율에서 인삼부산물 급여에 의한 차이는 없었으나, pH는 인삼부산물을 40일간 급여한 처리구 에서 유의적으로 높았으며, 가열감량 및 보수력은 인삼부산 물을 각각 40일 또는 30일간 급여한 처리구가 다른 처리구에 비해 좋은 것으로 나타났다.

• Journal of Animal Science and Technology
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• 제58권8호
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• pp.32.1-32.7
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• 2016

Background: The objectives of this study were to investigate the effects of persimmon peel (PPM) supplementation on carcass performance, pork quality, eating quality, fatty acid composition, and cholesterol concentration of the porcine longissimus dorsi muscle. Results: No adverse effects of PPM supplementation were observed on carcass and meat quality characteristics among the treatment groups (P > 0.05), whereas pork loins from pigs fed a diet supplemented with 0.9 % persimmon peel (T3) showed more tender meat than did pork loins from pigs fed a control diet (P < 0.01), even though no significant difference was observed between the control and T1 group. The T3 group had higher ratio of polyunsaturated fatty acids relative to saturated fatty acids (0.33 vs. 0.28, P < 0.05) and lower total cholesterol concentration (94.4 vs. 99.1 mg/g, P < 0.05) compared to the control group. Persimmon peel appeared to have beneficial effects on fatty acid composition and cholesterol concentration, probably leading to a hypocholesterolemic effect. Conclusions: Animal diets fortified with persimmon peel represents an efficient and useful method for improving the nutritional quality of pork without impairing growth performance and eating quality properties.

• 한국축산식품학회지
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• 제23권2호
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• pp.97-102
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• 2003

본 연구는 쑥의 첨가와 도체등급이 돈육 patty의 품질에 미치는 영향을 규명하기 위하여 쑥을 첨가하지 않은 B등급육 patty(A patty), 쑥을 첨가한 B등급육 patty(B patty), 쑥을 첨가하지 않은 E등급육 patty(C patty) 및 쑥을 첨가한 E등급육 patty(D patty)를 제조하고 일반성분, 열량, 아질산 잔류량, 표면색도, 조직감, 보수력 및 관능성을 실험하였다. 수분함량은 시료들 사이에 유의한 차이가 없었으며, 조지방 함량과 열량은 B등급육 patty가 E등급육 patty보다 높았다. 조회분은 patty들 사이에 유의한 차이가 없었으며, 아질산 잔류량은 쑥을 첨가한 patty가 첨가하지 않은 것보다 낮았다. 명도(L)및 황색도(b)는 B등급육 patty가 높았으며, 적색도(a)는 E등급육 patty가 높았다. 경도, 응집성 및 씹힘성은 B등급육이 E등급육 patty보다 낮았다. 돈육 patty의 향기, 맛, 조직감, 다즙성, 색깔 및 종합적인 기호성은 patty들 사이에 유의한 차이가 없었다.

• 한국축산식품학회지
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• 제23권4호
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• pp.285-291
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• 2003

도체등급과 쑥 분말의 첨가가 소시지의 저장 안정성에 미치는 영향에 대한 연구를 위하여 B 등급육과 E 등급육(경산 모돈육)에 쑥 분말을 0.3% 첨가한 것과 첨가하지 않은 소시지를 제조하고, 4$\pm$1$^{\circ}C$에서 8주 동안 저장하면서 pH, 휘발성 염기태질소(VBN) 함량, TBARS 값, 일반세균수 및 아질산염 잔류량에 대하여 검토하였다. 소시지의 pH는 B 등급육으로 제조한 소시지가 낮고, 냉장 중 쑥 분말을 첨가한 소시지가 현저한 차이는 아니었지만 비교적 낮았다. VBN 함량은 원료육과 쑥 분말 첨가에 의한 현저한 차이가 없었다. TBARS 값은 원료육의 등급에 따라 유의적인 차이를 나타내지 않았으며, 냉장 중 쑥 분말을 첨가한 소시지가 낮게 나타났다. 일반 세균수는 원료육의 등급에 의한 현저한 차이를 보이지 않았고, 냉장 중 쑥 분말을 첨가한 소시지가 적게 나타났다. 아질산염 잔류량은 원료육에 따른 차이를 보이지 않았고, 냉장 중 쑥 분말 첨가에 의해 감소되었다.