http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
동물행동과 복지 : 사육밀도가 토종육계의 행동특성에 미치는 영향
하재정 ( Jae Jung Ha ),이용준 ( Yong Joon Rhee ),김병천 ( Byong Chon Kim ),오상집 ( Sang Jip Ohh ),송영한 ( Young Han Song ) 한국동물자원과학회(구 한국축산학회) 2011 한국축산학회지 Vol.53 No.5
Rearing density is a major factor in welfare production and health of broiler chicks. An experiment was conducted to investigate the effect of rearing density on the behavioral characteristics of Korean native chicks. In the study, 20, 30, and 40 chicks per pen(3.17m2) were used in each treatment and randomly allotted to 6.3bird/m2, 9.5bird/m2, and 12.6bird/m2 density, respectively. The broilers` behavior was recorded for 12 hours continuously during 1 to 8 weeks of age. The time budgets(standing, sitting, and walking) and frequencies of certain behaviors(drinking, feeding, preening, scratching, dust bathing, flapping, aggressive pecking, and pecking) in the broilers were checked during the day. The behavioral characteristics in the early period(1 to 4 weeks) were compared to the later period(5 to 8 weeks) to know the changes in each behavior as the chicks matured. It was observed that 40 chicks per pen showed significant decrease in feed intake and body weight. Corticosterone hormone was higher in the order of 12.6bird/m2 > 9.5bird/m2 > 6.3bird/m2(p<0.05). The behaviors of standing and sitting were the highest in groups of 30 and 40 respectively. The walking behavior was gradually decreased as rearing density increased. The frequencies of the other behaviors also decreased in a high density treatment; especially for feeding, drinking, preening, and pecking. These tendencies widened the gaps of behaviors as time passed. It was concluded that a group of 20 chicks(6.3bird/m2) was the proper rearing density among these three treatments. Broilers in the lower rearing density showed more activity than that with higher density and therefore this environment may lead to better welfare condition.
조사료 종류별 한우 암소의 반추위 영양소 소실율 및 메탄가스 발생에 미치는 영향
하재정(Jae Jung Ha),김병기(Byung Ki Kim),정대진(Dae Jin Jung),이준구(Jun Koo Yi),김대현(Dae Hyun Kim),이제영(Jea Young Lee),오동엽(Dong Yep Oh) 한국데이터정보과학회 2018 한국데이터정보과학회지 Vol.29 No.3
본 연구는 조사료 종류별 한우 암소에서의 반추위내 소실율과 CH4 발생에 미치는 영향에 대해 알아보고자 수행되었다. 공시동물은 Rumen cannula가 장착된 한우 암소를 이용하였고 조사료 종류로는 볏짚, 애뉴얼 라이그라스짚, 클라인 목건초를 각각 처리구별 6두씩 급여하였다. 반추위내 소실율은 nylon bag을 이용한 in situ 방법으로 DM, CP, NDF 및 ADF 소실율을 측정하였다. 연구결과로 DM, CP, NDF 및 ADF 소실율은 클라인 목건초, 볏짚, 애뉴얼 라이그라스짚 순으로 나타났으며, 모든 소실율에서 클라인 목건초가 볏짚과 애뉴얼 라이그라스짚 처리구 대비 유의적으로 높게 나타났다 (p < 0.01). CH4 발생은 시간당 평균 발생량이 애뉴얼 라이그라스짚 (169.89±6.94 mg/hr), 볏짚(139.92±18.89mg/hr), 클라인 목건초 (128.20±4.91mg/hr) 처리구 순으로 분석되었으며, 애뉴얼 라이그라스짚 처리구 대비 클라인 목건초 처리구에서 유의적으로 높게 나타났다 (p < 0.01). The objective of this study was to investigate the effects of different roughage type (rice straw, annual ryegrass straw, and Klein grass hay) on ruminal disappearance characteristics and CH₄ emission in Hanwoo cows. Disappearance rates in the rumen of DM, CP, NDF, and ADF were higher in Klein grass hay, rice straw, and annual ryegrass straw, in that order, with significantly higher (p < 0.01) in Klein grass hay than in rice straw and annual ryegrass. The average hourly CH₄ emissions were as follows; annual ryegrass straw (169.89±6.94 mg/hr), rice straw (139.92±18.89 mg/hr), and Klein grass hay (128.20±4.91 mg/hr). Annual ryegrass straw is significantly higher (p¡0.01) than Klein grass hay. These results suggest that rice straw is a useful feed resource for ruminant production, which is mostly utilized as a domestic feed.
유전 및 육종 : 한우 육성우의 성별 군비두수에 따른 사양성적, 행동특성 및 혈액성상 비교분석
하재정 ( Jae Jung Ha ),오동엽 ( Dong Yep Oh ),이제영 ( Jea Young Lee ),양가영 ( Ka Young Yang ),김종복 ( Jong Bok Kim ),오상집 ( Sang Jip Ohh ),송영한 ( Young Han Song ) 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.5
This study examined the effects of sex in different group sizes of Hanwoo calves. The growth performance including the mean daily gain, feed conversion rate, behavioral characteristics, and blood parameters in Hanwoo calves were investigated. A total of 54 heads of Hanwoo calves were housed separately at 4 heads per group, 3 heads per group, and 2 heads per group per pen. In the heifer calves, except for those 10 months of age, the growth performance was improved by increasing the group size, which was similar to steer calves(p<0.05). The heifer calves housed in 3 heads group spent more time lying down(p<0.05). The steer calves spent more time standing in the 3 heads group, lying down(2 heads group), and walking(4 heads group). The heifer calves housed in 2 heads group had a lower frequency of drinking, self-grooming, pairwise grooming, and fighting(p<0.05). On the other hand, the steer calves in the 4 heads group had a higher frequency of drinking, rubbing, and fighting(p<0.05). The white blood cell and cortisol were highest in the heifer calves in the 2 heads group(p<0.05).
사육방식의 차이가 거세한우의 등심내 콜티졸 수준 및 지방산조성에 미치는 영향
하재정,오동엽,이준구,이제영,이지홍,박영식,Ha, Jae Jung,Oh, Dong Yep,Yi, Jun Koo,Lee, Jae-Young,Lee, Ji Hong,Park, Young Sik 한국데이터정보과학회 2015 한국데이터정보과학회지 Vol.26 No.3
본 연구는 사육방식의 차이가 한우 등심내 콜티졸과 지방산함량에 미치는 영향을 구명하고자 실시하였다. 무항생제 및 관행축산으로 생산된 한우육 1등급 등심 부위를 3종류의 브랜드별로 각각 3회씩 총 18점을 구매하여 시료로 공시하였고, 분석한 결과는 다음과 같다. 한우육 등심내 콜티졸 함량은 무항생제 처리구에서 관행사육 처리구 대비 유의적 (p=0.0176)으로 낮게 나타났으며, 포화지방산 및 불포화지방산 함량에서는 유의적 (p >0.05)인 차이를 나타내지는 않았으나, 관행사육 처리구에서는 포화지방산이, 무항생제 처리구에서는 불포화지방산이 각각 높은 경향으로 분석되었다. 또한, 불포화지방산 중 n-3과 n-9 지방산을 제외한 n-6 지방산에서 유의적 (p <0.01)인 차이를 보였다. 또한, 한우 등심내 콜티졸 농도와 n-6 지방산 농도간의 상관관계를 분석한 결과 유의적 (p=0.0014)으로 부 (-)의 상관관계가 성립되었다. This study was carried out to elucidate the effect of different rearing system on cortisol level, stress hormone, and fatty acid composition in the edible muscle tissues. These steers were reared in two different systems including antibiotic-free (ARS) and conservative system (CRS). In the M-Longissimus tissue, cortisol level was significantly lower in ARS than CRS, (p=0.0176). But, the levels of total saturated and unsaturated-fatty acids does not differ in ARS as CRS (p >0.05). However, the total saturated fatty acid levels tended to be greater in CRS and the total unsaturated fatty acid levels tended to be greater in ARS. However, the level of n-6 unsaturated fatty acid was higher in ARS than CRS (p=0.004). Especially, levels of linoleic acid (LA) and ${\gamma}$-linolenic acid (GLA) were significantly higher in ARS (p <0.01). Cortisol level and the n-6 fatty acid content in muscle tissue were negatively correlated (at p=0.00140.) In conclusion, ARS may produce beef with higher quality which contains lower cortisol and greater n-6 fatty acids, such as ALA and GLA.
김병기,하재정,이준구,오동엽,정대진,황은경,이제영,Kim, Byung Ki,Ha, Jae Jung,Yi, Jun Koo,Oh, Dong Yep,Jung, Dae Jin,Hwang, Eun Gyeoung,Lee, Jea Young 한국데이터정보과학회 2016 한국데이터정보과학회지 Vol.27 No.4
본 연구는 한방생균제 첨가급여가 거세한우육의 이화학적 특성 및 지방산, 아미노산 조성에 미치는 영향을 알아보기 위하여 거세한우 50두 (5처리${\times}$10두)를 공시하여 육질을 분석하였다. 육의 조지방 함량은 T2그룹과 T3그룹이 유의적 높았으나, 가열감량은 Con 2그룹이 가장 높았다 (p<0.05). 보수력은 56.73~60.16% 범위로, 전반적으로 처리그룹이 대조그룹보다 더 높았으며, 그 중에서 T3그룹이 유의적으로 높았다 (p<0.05). 콜레스테롤 함량은 41.64~47.33 mg/100g 범위로, 그 중에서 Con 1그룹이 유의적으로 높았다 (p<0.05). 또한 관능평가인 다즙성, 연도, 향미는 T3그룹이 매우 높게 나타났다 (p<0.05). 그리고 지방산 조성에서 올레인산과 무파 T2그룹과 T3그룹이 유의적으로 높았으나 (p<0.05), 아미노산 함량은 처리그룹 간에 거의 차이가 없었다. 이 결과에서 한방생균제 첨가급여는 한우육의 육질개선 및 불포화 지방산에 영향을 미치며 고급육 생산에 도움이 될 것으로 판단된다. This study was carried out to investigate the effect of dietary addition of herbal probiotics on the Hanwoo steers' physiochemical property. A total of 50 Hanwoo steers (5 treatment groups${\times}$10 heads) were used. The crude fat content of beef has been found significant high in T2 and T3 group, and the Con 2 group had the highest heating loss (p<0.05). The water-holding capacity ranged from 56.73% through 60.16%, and the treatment group was generally higher than the control group. In particular, the T3 group showed significantly high water-holding capacity (p<0.05). The cholesterol content ranged from 41.64mg/100g through 47.33mg/100g. In the overall and the Con 2 group had significantly high cholesterol content (p<0.05). Furthermore, the oleic acid and MUFA had significant high T2 and T3 group in the fatty acid composition (p<0.05), but the amino acid content made no difference between the treatment groups.
김병기,하재정,이준구,오동엽,정대진,최성복,황은경,김수정,이제영,Kim, Byung Ki,Ha, Jae Jung,Yi, Jun Koo,Oh, Dong Yep,Jung, Dae Jin,Choi, Seong Bok,Hwang, Eun Gyoung,Kim, Soo Jung,Lee, Jea Young 한국데이터정보과학회 2016 한국데이터정보과학회지 Vol.27 No.5
본 논문은 계란에 대한 소비자들의 인식을 향상시키기 위해 산란계 종류에 따른 계란품질과 성분조성을 실험 및 분석하였다. 산란개시 32주령에 있는 4개 품종의 청색란실용계 (BC), 연산오골계 (YS), 재래닭 (KN), 백색레그혼 (WL) 총 120수 (각 처리구당 10수 ${\times}$ 3반복 ${\times}$ 4처리구)를 임의 배치하여 생산된 계란의 성분을 분석하였다. 계란의 품질 평가의 경우, BC가 다른 품종에 비하여 호우닛 계수 (82.82),난각강도 (0.37mm) 및 난각두께 ($40.58kg/cm^2$)가 유의적으로 높게 나왔으며, 계란의 콜레스테롤 함량은 BC가 317.58mg/100g로 가장 낮았지만, YS는 381.30mg/100g으로 매우 높게 나타났다 (p<0.05). 그리고 계란의 지방산 조성에서 oleic acid (C18:1n9)함량은 BC가 다른 품종보다 매우 낮았으며, 아미노산의 경우에는 Thronine과 Proline을 제외한 모든 성분에서 대체로 WL종이 다른 품종보다 더 높게 나타났다 (p<0.05). This study was to execute the random arrangement of total 120 heads (10 heads per treatment plot ${\times}$ 3 repeats ${\times}$ 4 treatment plots) for four breeds [Blue arakana commercial Fowl (BC), Yeonsan silky fowl (YS), Korean native fowl (KN), White leghorn fowl (WL)] with the initiation of laying hens at 32 weeks old in order to comparatively analyze egg quality and composition by sorts of laying hens. In case of evaluation of the quality of eggs, this study has shown that BC had higher degree of Haugh unit coefficient (82.82) and in case cholesterol content of eggs, BC had significantly low content as 317.55mg/100g, but YS had rather higher content as 381.30mg/100g. Furthermore, this study has found out that BC had significantly low Oleic acid (C18:1n9) and WL had higher Amino acid content by breeds than those of other breeds (p<0.05).
한방생균제가 한우의 체중, 혈액성상, 면역성 및 육량·육질에 미치는 영향
김병기,하재정,이준구,오동엽,정대진,황은경,김수정,안용근,Kim, Byung Ki,Ha, Jae Jung,Yi, Jun Koo,Oh, Don Yep,Jung, Dae Jin,Hwang, Eun Gyeong,Kim, Soo Jung,Ann, Yong Geun 한국식품영양학회 2016 韓國食品營養學會誌 Vol.29 No.6
This study was a report on 60 heads of Hanwoo steers(5 treatments ${\times}$ 4 heads ${\times}$ 3 repeats). Their start weights were $361.2{\pm}14.39kg$ to $380.5{\pm}27.33kg$; 12.7 to 13.6 months of age. The aim was to investigate the effect of herbal probiotic supplementation on the weight, blood composition, meat quality and immunity in beef. In case of body weight gain, con. 1 plot(183.8 kg) in the early fattening stage, T3 plot(115.1 kg) in the middle fattening stage, and T2 plot(163.3 kg) in the late fattening stage significantly increased(p<0.05). There was a statistically significant difference in the blood content of T-Cho and IgG: con. 1 plot and T1 plot in the early fattening stage, T3 plot and T2 plots in the middle fattening stage, and con. 2 plot and T1~T3 plots in the late fattening stage had higher blood content than that of other treatment plots (p<0.05). In addition, the carcass weight was highest in the T1 plot and T2 plot among the total treatment plots(p<0.05). However, no statistical significant difference was observed in the different treatments; all individual treatment plots(T1~T3 plots) were somewhat higher than the control plots(con. 1~con. 2 plots) with respect to the carcass quantity and carcass quality. Combining and analyzing all results revealed that the dietary addition of herbal probiotics for Hanwoo steers had a positive effect on the improvement of weight, amount of meat, meat quality and immunity.
거정석 첨가급여가 거세한우육의 품질 특성에 미치는 영향
김병기 ( Byung Ki Kim ),하재정 ( Jae Jung Ha ),이준구 ( Jun Koo Lee ),오동엽 ( Dong Yeop Oh ),정대진 ( Dae Jin Jung ),김대현 ( Dae Hyun Kim ),황은경 ( Eun Gyeong Hwang ) 한국식품영양학회 2017 韓國食品營養學會誌 Vol.30 No.6
The purpose of this study was to investigate the effect of dietary addition of pegmatite for Hanwoo steers on the carcass characteristics. Based upon the findings yielded by the research referenced above, the results may be summed up as follows : Oleic acid was for the most part, higher as T2 plots (45.40%) and T3 plots (44.20%) compared with Con. plots (42.50%). As well, this study has shown that the treatment plots in unsaturated fatty acid (UFA), monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) were largely higher than that of Con. plots, and of them all, T2 plots were highest. As for the melting point of fat, T2 plots (29℃) were largely lower than that of Con. plots (31.9℃). This study has shown that the treatment plots were significant higher as the content of total essential amino acid and total amino acid and inosine monophosphate in the nucleotide compound for the Hanwoo beef was treatment plots when compared with Con. plots.