싸움소의 증례를 통한 동물복지형 헤드기어의 개발

김택석 ( Tac Suk Kim ),김충희 ( Chung Hui Kim ) 한국동물위생학회 2015 韓國家畜衛生學會誌 Vol.38 No.4

Bull-boxing in South Korea is a form of competitions in which bulls measure their strength with each other in the form of pushing by putting their heads together. Bull-boxing has been admitted after being designated as a play culture by the government because it does not cause great injuries to animals’ bodies and has strong positive aspects such as contributing to livestock farmers’ leisure activities, encouragement of animal husbandry, and communities’ economic development. However, bull-boxing sometimes causes damage to the head and horns due to the heavy bodies. According to the results of examinations of these damage cases, damage that caused irregular shapes of the base of horns was identified in 31.5% of fighting bulls. The damage to horns is thought to have been caused by the great forces of fighting bulls repeatedly imposed to each other’s horns during bull-boxing that caused minute fractures leading to damage to the blood vessels inside the horns resulting in the blocking of delivery of nutrients to the horns causing the deformation of the horns into abnormal shapes. Since bulls’ bodies are injured during bull-boxing although the injuries are small as bull-boxing is mainly conducted by pushing, animal protection groups regard bull-boxing as cruelty to animals and request to stop bull-boxing. The present study aims to develop animal welfare type headgears that can protect bulls’ horns and heads in order to protect fighting bulls during bull-boxing in terms of animal protection and welfare.

Feal Bovine Serum 과 Bovine Serum Albumin 이 생쥐 체외수정에 미치는 영향

김종섭,김택석,박무현 경상대학교 축산진흥연구소 1988 畜産振興硏究所報 Vol.15 No.1

경남지역 거세한우의 고급육 생산을 위한 도체 근육부위별 분포도 차이에 대한 연구

김철호,김택석,김충희 한국동물위생학회 2020 韓國家畜衛生學會誌 Vol.43 No.2

A grading system is implemented to evaluate the meat quality of Hanwoo. In the grading system, grade 1++A is the highest grade. Livestock farms breed Hanwoo with good quality feed in order to obtain the highest grade. In this process, the content ratios of muscles in individual regions can be changed. To find out the muscle distribution ratios of Hanwoo steers, grade 1A, 1+A, and 1++A Hanwoo steers were compared with grade 1+A Hanwoo female. Grade 1A Hanwoo steers had higher ratios of shank (SK), brisket and flank (BF), neck chain (NC), and inside skirt (IS) meats and a lower ratio of striploin (SL) meat compared to grade 1+A Hanwoo feamle. Grade 1++A Hanwoo steers had higher ratios of neck (NK) and loin (LN) meats and lower ratios of inside skirt (IS), tenderloin (TL), top round (TR), eye round (ER), bottom round (BR), bottom sirloin triangle (BST), and knuckle (K) meats compared to grade 1+A Hanwoo steers. In comparison between grade 1A and 1++A Hanwoo steers, the ratio of shank (SK) was significantly lower in higher quality meats. If the changes are continuously studied to improve the process so that the ratios of partial meats of the regions highly preferred by consumers can increase, it will contribute to increases in the incomes of livestock farms and enable Hanwoo to grow into a global brand.

한국산재래산양의 태아 및 신생자의 전지골성장에 관한 연구

김종섭,정헌식,김택석 경상대학교 축산진흥연구소 1988 畜産振興硏究所報 Vol.15 No.1

The measurement was investigated with 24 pectoral limbs and girdles of fetus(60, 90, 120 days of gestation)and neonates in Korean native goats. The results were summarized as follows : 1. The length of scapula at 60, 90, 120 days of gestation and neonate was 1.28±0.05, 3.20±0.16, 4.96±0.18 and 5.87±0.25 cm, respectively. 2. The length of humerus at 60, 90, 120 days of gestation and neonate was 1.12±0.06, 3.04±0.12, 4.92±0.18 and 5.65±0.15 cm, respectively. 3. The length of radius at 60, 90, 120 days of gestation and neonate was 0.98±0.13, 2.65±0.13, 4.02±0.14 and 5.08±0.21 cm, respectively. 4. The length of ulna at 60, 90, 120 days of gestation and neonate was 1.15±0.11, 3.35±0.13, 4.74 0.17 and 6.08±0.09 cm, respectively. 5. The length of carpals at 60, 90, 120 days of gestation and neonate was 0.32±0.05, 0.35±0.07, 0.98±0.14 and 1.06±0.08 cm, respectively. 6. The length of metacarpals at 60, 90, 120 days of gestation and neonate was 0.71±0.06, 1.86 0.13, 3.06±0.21 and 3.23±0.09 cm, respectively. 7. The ossified length of third phalange at 90, 120 days of gestation and neonate was 0.45±0.02, 0.70±0.03 and 1.10±0.08 cm, respectively. 8. There were that ossification was at 60 days(on scapula, humerus, radius and ulna), 90 days(on metacarpals and phalanges), 120 days(on carpals) of gestation and newborn(on olecranon).

생쥐 수정란의 분할조작후 생존성 향상에 관한 연구

이효종,박희성,김택석,최상용,박충생,Lee, Hyo-jong,Park, Hee-sung,Kim, Taeg-seog,Choe, Sang-yong,Park, Choong-saeng 대한수의학회 1989 大韓獸醫學會誌 Vol.29 No.2

Demi-embryos were successfully produced by bisection of ICR mouse embryos at preimplantation stages. They were microsurgically bisected using a microsurgical blade attached to a micromanipulator after pretreatment with 0.5% pronase in PBS for two minutes or not. Embryos with softened zona pellucida were more easily bisected and less damaged than intact embryos. The highest success rate in bisection has been achieved by selecting blastocysts(94.1% in success rate with intact blastocysts and 100% in success rate with zona softened blastocysts). Demi-embryos without zona pellucida were cultured in D-PBS or M-16 medium at $37^{\circ}C$, 5% $CO_2$ in air for 72 hours for 2-cell stage embryos, 48 hours for 4-to 8-cell stage embryos, 24 hours for morula stage embryos and 6~12 hours for blastocyst stage embryos. For the in vitro culture of 2-cell stage embryos, $100{\mu}M$ 2Na-EDTA was added to the media. M-16 medium was better for the in vitro development of mouse embryos than PBS, and PBS is not considered to be suitable for long-term culture of embryos, especially at early stage of cleavage. In M-16 medium, developing rate of demi-embryos of which pair underwent development to form eublastocysts was 15.8% at 2-cell stage, 16.8% at 4-cell stage, 38% at 8-cell stage, 89.6% at morula stage and 94.4% at blastocyst stage, respectively. The more rapid and efficient production of demi-embryos and higher viability after bisection can be expected by softening zona pellucida with pronase and by selecting morulae or blastocysts rather than embryos at early stage of cleavage.

한국재래산양(韓國在來山羊)의 태아(胎兒) 및 신생자(新生仔)의 체적측정치(體尺測定値)에 관(關)한 연구(硏究)

김종섭,최상용,정헌식,김택석,Kim, Chong-sup,Choe, Sang-yong,Chung, Hyon-sik,Kim, Taeg-seog 대한수의학회 1988 大韓獸醫學會誌 Vol.28 No.2

The measurement was investigated with 18 heads of fetus(60, 90, 120 days of gestation) and neonate in Korean native goats. The results were summerized as follows: 1. The crown-rump length of fetuses at 60, 90, 120 days of gestation and neonate was 8.71, 20.83, 31.10 and 34.93 cm, respectively. 2. The length of small intestine at 60, 90, 120 days of gestation and neonate was 32.28, 157.10, 303.52 and 457.06 cm, respectively. 3. The length of large intestine at 60, 90, 120 days of gestation and neonate was 9.20, 37.70, 82.06 and 94.46 cm, respectively. 4. The ratio of intestinal length to crown-rump length at 60, 90, 120 days of gestation and neonate was 4.76, 9.45, 12.40 and 15.79 times, respectively. 5. At 60 days of gestation, the total length of the vertebral column was $7.40{\pm}0.72cm$, The mean length of each segment of the vertebral column was $1.55{\pm}0.20cm$ in cervical, $2.29{\pm}0.21cm$ in thoracic, $1.46{\pm}0.10cm$ in lumbar, $0.51{\pm}0.04cm$ in sacral and $1.59{\pm}0.17cm$ in coccygeal vertebrae. 6. At 90 days of gestation, the total length of the vertebral column was $16.52{\pm}0.80cm$. The mean length of each segment of the vertebral column was $3.72{\pm}0.12cm$ in cervical, $5.09{\pm}0.26cm$ in thoracic, $3.22{\pm}0.04cm$ in lumbar, $1.97{\pm}0.03cm$ in sacral and $2.64{\pm}0.35cm$ in coccygeal vertebrae. 7. At 120 days of gestation, the total length of the vertebral column was $26.35{\pm}0.34cm$. The mean length of each segment of the vertebral column was $6.09{\pm}0.16cm$ in cervical, $7.81{\pm}0.07cm$ in thoracic, $5.08{\pm}0.07cm$ in lumbar, $3.07{\pm}0.02cm$ in and $4.31{\pm}0.02cm$ in coccygeal vertebrae. 8. In the neonate, the total length of the vertebral column was $32.41{\pm}1.57cm$. The mean length of each segment of vertebral was $7.70{\pm}0.25cm$ in cervical, $9.97{\pm}0.68cm$ in thoracic, $5.58{\pm}0.44cm$ in lumbar, $3.85{\pm}0.15cm$ in sacral and $5.05{\pm}0.06cm$ coccygeal vertebrae. 9. The chest girth at 60, 90, 120 days of gestation and neonate was $6.13{\pm}0.51$, $13.45{\pm}0.84$, $20.28{\pm}1.53$ and $22.94{\pm}1.75cm$, respectively. 10. The head length at 60, 90, 120 days of gestation and neonate was $2.93{\pm}0.07$, $6.67{\pm}0.13$, $8.84{\pm}0.51$ and $9.76{\pm}0.44cm$, respectively. 11. The width of the head at 60, 90, 120 days of gestation and neonate was $2.20{\pm}0.13$, $4.45{\pm}0.11$, $5.33{\pm}0.20$ and $5.51{\pm}0.32cm$, respectively.

재래산양의 과배란처리에 있어서 회수시간이 난자의 회수율에 미치는 영향

박희성,홍승표,김선훈,정수영,진종인,김택석,이지삼 한국동물생명공학회(구 한국동물번식학회) 2003 Reproductive & developmental biology Vol.27 No.1

재래산양의 과배란처리에 있어서 회수시간이 난자의 회수율에 미치는 영향

박희성,홍승표,김선훈,정수영,진종인,김택석,이지삼 한국동물번식학회 2003 Reproductive & Developmental Biology(Supplement) Vol.27 No.1s

생쥐 수정란의 분할조작후 생존성 향상에 관한 연구

최상용,박희성,이병오,김종섭,이효종,김택석,박충생 경상대학교 축산진흥연구소 1989 畜産振興硏究所報 Vol.16 No.1

Demi-embryos were successfully produced by bisection of ICR mouse embryos at preimplantation stages. They were microsurgically bisected using a microsurgical blade attached to a micromanipulator after pretreatment with 0.5% pronase in PBS for two minutes or not. Embryos with softened zona pellucida were more easily bisecetd and less damaged than intact embryos. The hightest success rate in bisection has been achieved by selecting blastocysts(94.1% in success rate with intact blastocysts and 10096 in success rate with zona softened blastocysts). Demi-embryos without zona pellucida were cultured in D-PBS or M-16 medium at 37℃, 5% CO₂ in air for 72 hours for 2-cell stage embryos, 48 hours for 4-to 8-cell stage embryos, 24 hours for morula stage embryos and 6--12 hours for blastocyst stage embryos. For the in vitro culture of 2-cell stage embryos, 100 μM 2Na-EDTA was added to the media. M-16 medium was better for the in vitro development of mouse embryos than PBS, and PBS is not considered to be suitable for long-term culture of embryos, especially at early stage of cleavage. In M-16 medium, developing rate of demi-embryos of which pair underwent development to form eublastocysts was 15.8% at 2-cell stage, 16.8% at 4-cell stage, 38% at 8-cell stage, 89.6% at morula stage and 94.4% at blastocyst stage, respectively. The more rapid and efficient production of demi-embryos and higher viability after bisection can be expected by softening zona pellucida with pronase and by selecting morulae or blastocysts rather than embryos at early stage of cleavage.