• 한국축산식품학회지
• /
• 제42권3호
• /
• pp.455-466
• /
• 2022

The aim of this study was to assess the occurrence of white striping (WS), wooden breast (WB), and WS combined with WS/WB muscle abnormalities in broilers (Ross 500) at different slaughter ages (34, 41, and 48 d). In addition, the influence of these muscle abnormalities at different slaughter ages on quality characteristics (physical dimensions, pH, color index, and chemical composition) was studied. Overall occurrence of muscle abnormalities was 45%, 92%, and 100% at slaughter ages of 34, 41, and 48 d, respectively. It was found that about 39% from the occurrence of muscle abnormalities was not similar in the same bird (left and right fillets). Breast fillets affected by muscle abnormalities had significantly (p<0.05) higher weight than normal fillets. At slaughter age of 34 d, normal fillets had significantly higher L^* (67.37 vs. 61.73 and 63.05, p<0.05), lower a^* (3.25 vs. 4.87 and 5.18, p<0.05) and b^* (4.02 vs. 5.20 and 5.99, p<0.05) than WS and WS combined with WB fillets; respectively. The changes in chemical composition due to muscle abnormalities were more significant at high slaughter age than at low slaughter age. In conclusion, the occurrence of muscle abnormalities was strongly influenced by slaughter age. Moreover, breast fillets affected by muscle abnormalities had different quality characteristics (proximate composition, color traits, and dimensions) in comparison to normal fillets.

• Asian-Australasian Journal of Animal Sciences
• /
• 제3권2호
• /
• pp.97-102
• /
• 1990

A procedure to standardize camel carcass fabrication is proposed. This includes a definitive method of jointing the carcass into wholesale neck, shoulder, brisket, rib, plate, loin, flank, rump and leg cuts. Carcass cutout data were collected from the right sides of 21 Najdi male camels averaging 8, 16 and 26 months of age in order to determine the influence of age on the weight of each wholesale cut. The weight of body, empty body, hot carcass, cold carcass, hump fat, kidney, pelvic and heart fat (KPH) and each wholesale cut increased (p < .01) with age. Except for percent shrinkage and wholesale rump weight, all studied traits increased (p < .01) linearly as the age increased. This change was most pronounced in wholesale flank and plate cuts, increasing by 4.2 and 3.4 times, respectively, while the rump and shoulder cuts changed the least, increasing by 1.8 and 1.9 times, respectively. Allometric growth coefficients indicated that as the camel grew, the weight of rib, brisket, plate and flank cuts increased relatively more rapidly than did cold carcass or empty body weight and that the weight of wholesale shoulder, neck, leg and rump increased less rapidly than did cold carcass or empty body weight.

• Asian-Australasian Journal of Animal Sciences
• /
• 제4권3호
• /
• pp.227-230
• /
• 1991

A comparative study was conducted in total thirty six large while weaner pigs of about 15 kg body weight namely boars, barrows and gilts to evaluate best sex and economic slaughter weight with one standard ration. In 159 days study period feed consumption, growth, feed conversion ratio and carcass quality were judged in all sexes of pigs at 50, 70 and 90 kg body weight. It was noted that upto 70 kg body weight the growth in boars and gills 46.0 and 49.0 kg and feed conversion ratio 4.83 and 4.81 were superior and economical over the barrows, which were 45.5 kg and 4.95. Later on there were too many fluctuations in growth and feed conversion ratio in all sexes of pigs, which would be uneconomical. Carcass quality was also better in boars and gilts than barrows, No boar taint was noted in most of the boar carcasses. Hence it is concluded that boars and gilts can be raised upto the 70 kg body weight for economic pork production.

• Asian-Australasian Journal of Animal Sciences
• /
• 제4권3호
• /
• pp.219-225
• /
• 1991

The influence of age on the relative growth patterns of subcutaneous, intermuscular, intramuscular, perirenal, channel and hump fat in relation to the total fat weight in carcass sides of 18 Najdi male camels averaging 8, 16 and 26 months of age has been investigated. The total fat weight in a carcass side increased (p<.01) from 17.3% to 27.1% as the camel age increased from 8 to 26 months. However, at all ages studied, intermuscular fat weight was the largest fat depot, followed, in order, by subcutaneous and intramuscular fat. The change in weight of the intramuscular, intermuscular and subcutaneous fat between 8 and 26 months of age was greater, reaching 6.7, 4.3 and 4 times respectively, than the hump, channel and perirenal fat weight which increased by 3.6, 2.5 and 2.3 times, respectively. The allometric growth coefficient (${\beta}$) for intramuscular fat in relation to the total carcass fat weight was the highest, followed, in order, by intermuscular, subcutaneous, hump, channel and perirenal fat.

• 농업생명과학연구
• /
• 제43권1호
• /
• pp.35-41
• /
• 2009

본 연구는 1999년부터 2005년까지 부산경남축산물공판장에서 도축된 비육돈 1,251,572두의 자료를 이용하여 돼지의 주요 도체형질인 도축체중, 등지방두께와 도체등급에 대한 년도별 도체등급 변화 추세와 환경적인 요인을 분석하였다. 도축체중의 경우 암퇘지, 수퇘지 및 거세돼지가 각각 $82.97{\pm}0.008$, $82.00{\pm}0.090$ 및 $82.79{\pm}0.008kg$으로 조사되었다. 등지방두께는 암퇘지, 수퇘지 및 거세돼지가 각각 $19.27{\pm}0.006$, $15.99{\pm}0.072$ 및 $22.49{\pm}0.006mm$로 수퇘지가 유의적으로 얇았다. 도축체중의 경우 1999년에 $80.38{\pm}0.033kg$을 가장 가볍게 나타났고, 2005년에 84.26${\pm}0.033kg$으로 가장 무겁게 나타났으며, 연도가 증가함에 따라 도축체중이 증가하는 경향을 보였다. 년도별 도체등급 변화 추세를 보면 A등급 출현율이 2000년부터 2003년까지는 계속 증가하다가 2003년 이후로 점차 감소하는 경향을 나타냈다.

• 대한수의학회지
• /
• 제51권2호
• /
• pp.93-99
• /
• 2011

This study surveyed the prevalence of traumatic reticular diseases (TRD) of slaughter cattle in Korea, the typology of the causative foreign bodies and the effects on beef quality and carcass weight. The overall prevalence of TRD in 3,121 slaughter cattle was 5.5%. However, the prevalence was significantly higher in Korea indigenous cattle Hanwoo (5.8%, p < 0.05) and female cattle (20.75%, p < 0.001). The prevalence significantly increased in aged cattle (p < 0.001). Major lesions related to foreign bodies were reticulitis (96%) and peritonitis (86%). Most causative foreign bodies were made of iron including nails, wires, steel rods, screw nails, and syringe needles. Cattle affected with TRD produced significantly lower grade quality of beef compared to normal cattle (p < 0.0001), but TRD did not affect carcass weight. The data will be useful in the management of TRD, with the aim of increasing beef productivity in Korea.

• 농업생명과학연구
• /
• 제45권6호
• /
• pp.109-114
• /
• 2011

본 논문은 한우 거세우의 각 월령별 체중과 18개월 체척, 도체형질에 대하여 출생지, 후대검정차수, 측정일령, 도축일, 도축일령등의 환경효과가 영향을 미치는지 알아 보기위하여 실시하였다. 이 연구에 사용된 자료는 농협중앙회 한우개량사업소에서 2004년부터 2008년까지 후대 검정한 38차에서 47차까지의 거 세우 1,838두의 성장형질과 도체형질 자료를 이용하였고, 성장형질은 18개월령 체척자료와 6개월, 12개월, 18개월, 24개월 체중을, 도체형질은 24개월령 도축성적을 이용하였다. 각 형질에 대한 환경효과 분석을 위해 각 월령별 체중에 대해서는 고정효과를 출생지, 후대검정차수로 하였고 공변량을 측정일령으로 하였다. 도체형질은 도축일을 고정효과로 도축일령을 공변량으로 하였다. 18개월 체척의 경우는 고정효과를 출생지, 후대검정차수로 하였고, 공변량을 18개월 체척측정일령으로 하였다. 분석결과 24개월 체중에서는 출생지 효과가 유의성이 낮은 것으로 나타났다. 도체형질인 도체중, 등심단면적, 육량지수, 등지방 두께는 도축일에 따른 유의적인 차이가 존재하는 것으로 나타났지만 도축일령에 따른 유의적인 차이는 없었다. 근내지방도에 대해서는 도축일령과 도축일 모두 영향을 미치는 것으로 나타났다. 또한 체척형질은 흉심, 고장폭, 흉위에서 출생지 효과는 영향이 없는 것으로 나타났다. 따라서 본 연구결과는 한우 유전평가 모형 설정 시 활용 가능한 것으로 예상된다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제3권3호
• /
• pp.155-159
• /
• 1990

The growth of lean from nine wholesale cuts in relation to the total lean weight in carcass side were evaluated with three allometric equations for 18 Najdi male camels slaughtered at 8, 16 and 26 months of age. The allometric growth coefficients indicated that as the camels grew, weights of lean form brisket and flank cuts increased relatively more rapidly than the total lean in carcass side (${\beta}$ >1.1) and that weights of lean from wholesale shoulder and rump cuts increased relatively less rapidly (${\beta}$ <.9) than the total lean weight from carcass side. The growth coefficients for the lean in the thoracic limb and pelvic limb showed a dorsoventral rise in the growth impetus, with coefficients for the thoracic limb correspondingly higher than those of pelvic limb. The growth coefficients for the lean from shoulder, rib, flank and leg cuts increased (p<.01) with increased weight of total lean in carcass side, whereas it decreased with increased total lean weight in carcass side for the lean in neck, brisket, plate, loin and rump cuts. At a constant weight of total lean in carcass side, older camels had larger coefficients for lean in neck, brisket, rump, flank and leg cuts, but had smaller coefficients for lean in shoulder, rib, plate and loin cuts.

• Journal of Animal Science and Technology
• /
• 제53권3호
• /
• pp.211-222
• /
• 2011

The present review was aimed to assess the feasibility of increasing the slaughter weight (SW) of finishing pigs. Growth performance, including ADG, ADFI and gain:feed, does not change significantly with increasing SW between 110 and $135{\pm}5kg$ in lean-genotype pigs, whereas in non-lean pigs, ADG and gain:feed decrease with increasing SW within the similar range of BW. Backfat thickness (BFT) and marbling of the carcass, which are greater in barrows than in gilts, increase with the increase of SW. The SW could be increased by using a low-energy diet and thereby reducing the rate of fat deposition per weight gain. The yield of the belly increases with the increase of SW, which may be economically significant in Korea. However, yields of some other primal cuts do not change so much as to affect the carcass value. The redness and fat content of the muscle increase slightly with the increase of SW whereas moisture content is minimally influenced by SW. Muscular protein content rarely changes, but sometimes increases slightly, with increasing SW. Other physicochemical characteristics, including lightness, pH, drip loss, and cooking loss of the muscle, are barely influenced by SW. Marbling of fresh loin and ham increases with increasing SW. Sensory characteristics of fresh loin, ham, and belly, including color, aroma, off-flavor, drip, and acceptability, are not influenced significantly by SW. The eating quality of cooked pork also has almost no relation to SW. In conclusion, it is thought that the current SW for moderately lean barrows and gilts can be raised up to 125 and 135 kg, respectively, with BFT at these weights predicted to be approximately 24 mm near the last rib, without compromising the meat quality.

• Journal of Animal Science and Technology
• /
• 제55권5호
• /
• pp.405-416
• /
• 2013

본 연구는 도체월령별 도체형질의 변화를 분석하여 적정 도축시기를 결정하는 데 필요한 정보를 얻기 위한 목적으로 실시하였으며, 2005년 10월부터 2011년 9월 사이에 도축된 거세우 17,249두의 도체형질자료를 이용하였다. 각 도체형질의 평균과 표준편차는 도축일령, 도체중, 등지방두께, 등심면적, 근내지방도, 육량지수, 도체단가 및 도체 총가격에서 각각 $940.4{\pm}73.00$, $437.0{\pm}48.70$ kg, $12.1{\pm}4.32$ mm, $90.3{\pm}9.51cm^2$, $5.7{\pm}1.86$, $65.13{\pm}3.23$, $14.150{\pm}1.77$천원 및 $6181.18{\pm}1009.46$천 원으로 나타났다. 도체월령별 회귀계수에서 조기 도축그룹에서는 도체 단가를 제외한 전체 형질들에서, 만기 도축그룹에서는 근내지방도를 제외한 전체 형질들에서 월령별 회귀계수가 유의성이 인정되었다. 수익을 얻기 위해서는 28개월령 이전으로 도축시기를 결정해야 할 것으로 판단된다.