• Feed Journal
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• v.3 no.11 s.27
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• pp.126-130
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• 2005

"흑염소는 대부분 소규모로 사육되고 있어 산업적인 비중이 낮아 축산관련 분야에서 별 관심 없이 여겨왔던 축종이었으나 `80년대 이후 건강식품에 대한 소비가 증가됨에 따라 농가 수입원으로 정착되기 시작하여 사육규모도 서서히 증가하고 있는 단계에 이르고 있다. 그러나 근래 경기침체로 인한 소비위축과 사료값 상승, 염소고기 수입량 증가 등으로 염소산업이 전반적으로 침체되어 있다. 금년에는 염소고기(육용)의 소비량이 가장 많은 시기인 봄부터"

• Journal of The Korean Society of Grassland and Forage Science
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• v.35 no.1
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• pp.1-5
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• 2015

This study assessed the impacts of grazing and barn feeding on the reproductive performance of black goats and the growth performance of goatlings to gather basic data for the establishment of an ideal goat-breeding system. A total of 36 Korean black goats were grouped by feeding system (a pasture grazing group and a barn feeding group, n=18) over the 8-month study period from April to November 2011. The difference between the singleton pregnancy rate of the grazing group, measured at 31.5%, and the barn-feeding group's 37.0% was not statistically significant. Also, breeding type did not yield any meaningful differences, with 1.76 live births recorded for the grazing group and 1.69 recorded for the barn-feeding group. In regard to weaner goats, the grazing group showed a higher number compared to the barn-feeding group (p=0.11). The birth weight of the grazing group was measured at 2.3 kg, while that of the barn-feeding group was 2.29 kg, with breeding type yielding no significant differences. The grazing group's weight at 90 days of age was 9.97 kg, which was higher than the barn-feeding group's 9.45 kg (p=0.09). The grazing group showed higher daily weight gain during the lactation period than the barn-feeding group (p=0.13). Overall, with breeding type considered, the grazing group did not show significant differences in terms of the number of live births and birth weights compared to the barn-feeding group; however, the grazing group showed better outcomes in terms of daily weight gain. As it has been shown that grazing satisfies the physiological needs of goats more effectively than barn feeding, we believe that it contributes to the farming of healthy goats.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.8
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• pp.149-155
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• 2019

This study aims to provide basic data for investigating the phenotypic traits and growth characteristics of Korean native black goats. The Jangsu and Tongyoung strains were shown to have black hair, while the Dangjin strain was shown to have black or dark brown long hair. Only the Tongyeong strain was found to have no wattle and one goat each from the females and males of the Dangjin strain was found to have no horns. The lengths of the ears and tails were similar for the female and male goats, while the lengths of horns and beards were longer in the male goats. The birth weight was 2 kg on average, with that of male goats tending to be slightly heavier than that of the females. Weights at the weaning period were found to be slightly heavier for the males. Also, at 12 months, the weights of the male goats by strain were shown to be heavier than that of the females. The body length and depth by strain were found to be higher for the male goats, while no differences in the chest width and girth between the strains or gender were found. These findings are expected to be used as a basis for differentiating between native and crossbred Korean black goat strains and for improving Korean native black goats.

• Journal of The Korean Society of Grassland and Forage Science
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• v.38 no.2
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• pp.120-125
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• 2018

The study was conducted to determine effects on forage productivity, feed value, grazing intensity and livestock productivity in growing Korean native female goat grazing in native pasture. Its with average initial body weight of $14.10{\pm}3.6kg$ and an average age of 4 months were used in this study. Dry matter content of native pasture was the highest at $33.48{\pm}2.56%$ in June, and the content was significantly increased from spring to autumn (p<0.05). Crude protein was maintained between 11% and 12% on average. Nutrient content was maintained at a certain level in native pasture, but there were differences due to the different types of wild grasses produced in each season. The productivity of forage crops increased from June, but decreased after August and showed a characteristic of grassland where productivity decreased rapidly in spring and autumn. The average grazing intensity are 39 head/ha. Black goat average daily gain was 80.2g/d. The stable weight gain in grazing is that the nutrient requirement of the black goat was met by supplementing the concentrated feed during grazing. study, can be expected that the productivity of livestock can be increased through the proper feeding of supplementary feed and maintenance of grazing intensity.

• Journal of The Korean Society of Grassland and Forage Science
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• v.32 no.4
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• pp.429-436
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• 2012

This study was conducted to examine the effect of feeding levels of concentrate feed on growth performance, meat quality and economic evaluation of Korean black goats. The 40 male Korean native goat were divided into four treatment groups T1 (1.5%), T2 (2.0%), T3 (2.5% feeding of concentrate feed body weight per day) and T4 (ab libitum) with ab libitum rice straw. Rice straw intake decrease as against feeding levels, however average daily gains were 22, 50, 69 and 94 g/day in T1, T2, T3 and T4 groups respectively levels (p<0.05). Dressing percentage were 41.77, 42.78, 46.12 and 49.78% in each group (p<0.05), also fat percentage were a significant increase according to feeding levels. In economic efficacy, T4 was higher than other treatment groups. In conclusion, both rice straw and concentrate feed ab libitum are good for feeding and management system on Korean black goats.

• Journal of The Korean Society of Grassland and Forage Science
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• v.27 no.1
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• pp.57-66
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• 2007

This study was conducted not only to evaluate the feed value for forests and organically produced-agricultural byproducts, but also to determine effects of different hilly pasture types on feed intake, nutrient digestibility and nitrogen retention in Korean black goats. Forty black goats were employed in the feeding trial and they were separated into four treatments (forages grown in chemical fertilizer, organic forages, native plants and browses) with 10 goats for each treatment. Furthermore, 12 goats, for nutrient digestibility trial, were allotted to few treatments of three goats per treatment with a randomized complete block design. Total body weight gain and average daily gain were significantly (p<0.05) decreased in the order of forages grown in chemical fertilizer, organic forages, native plants and browses throughout the trial. Dry matter intake (DM), digestible DMI, DM digestibility and nitrogen retention were highest in forages treatment grown in chemical fertilizer (p<0.05). From the above results, Organic Korean black goats fed forest byproducts as forage source and domestic organically produced-agricultural byproducts as supplemental diets were somewhat lowered in their performance. However, it showed high stability in the sustainable farming of organic Korean black goats. As the result, the consumption of organic Korean black goats might be more desirable for medicinal use rather than fur meat as a table food. The way to increase the low performance of organic Korean black goats for supplemental diets might be the additional supply of lacking nutrients for supplemental diets

• Proceedings of the Korean Society of Embryo Transfer Conference
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• 2002.11a
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• pp.86-86
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• 2002

면양과 염소가 최근 수십년동안 세계여러 나라에서 번식생리의 연구를 위한 모델로 사용되어 왔는데, 체내수정란의 생산에 관한 영역도 유럽을 중심으로 활발하게 연구되어왔다. 수정란생산을 위한 발정동기화방법, 과배란처리 및 수정란회수방법 기술은 현재 상당히 많은 기술진척이 이루어진 상태이나, 우리나라 고유의 재래유전자원인 흑염소에는 이를 위한 기술이 미진한 실정이므로 본 실험에서는 흑염소의 체내수정란생산기술을 확립하여 재래가축 유전자원보존을 위한 기초기술을 마련하고자 한다. 축산기술연구소 남원지소에서 사육하고 있는 체중 20kg 이상의 건강한 흑염소를 이용하여 발정동기화를 위해 controlled intravaginal drug release(CIDR)를 질내에 14일 동안 삽입하고, 과배란처리는 FSH를 CIDR 삽입 12, 13, 14일째에 12시간 간격으로 점감법으로 총20mg을 투여하였으며, PGF$_2$a를 13일째 FSH와 함께 투여하였다. CIDR는 14일째의 아침에 제거하였다. 수컷과의 교미는 CIDR제거 24시간후에 GnRH를 투여와 동시에 실시하였으며, 채란은 교미후 3일째에 외과적인 방법으로 실시하였다. CIDR처리경과에 따른 progesterone농도는 CIDR 주입시 바로 수치가 상승하여 제거전까지 6~12ng/m1의 농도를 유지하였으며, 제거즉시 2ng/ml 이하로 떨어졌다. 채란시 평균 배란점은 16.5개, 미배란난포 9.8개였으며, 회수수정란은 6.0개를 나타내어 채란율은 36.4%를 나타내었다. 회수된 수정란의 발달단계는 4-cell 78.9%, 2-cell 5.3%, fragmentation 15.8%를 나타내었다. 이와 같은 체내수정란생산방법을 기반으로 하여 이후 수정란의 동결 및 수정란이식기법에 관한 연구를 수행한다면 우리나라의 재래가축인 흑염소의 유전자원 장기보존과 생산성향상에 기여할 것으로 사료된다.배양액에 30 embryos/50ul 소적으로하여 38.8$^{\circ}C$, 5% $CO_2$의 탄산가스 배양기에서 각각 7일간 배양을 실시하였다. 조사된 결과는 SAS/STAT를 이용하여 통계분석을 실시하였다. 체외수정 12시간 후에 난자 급속 염색법으로 염색을 실시한 결과, 모든 처리구에서 핵성숙률(76.4~95.2%), 정자침투율(51.1~66.9%), 웅성전핵형성률(95.2~100%), 다정자침입률(18.2~25.6%) 및 평균침입정자수(1.2~l.4개)에서 유의적인 차이가 인정되지 않았다. 체외배양 48시간 난할률을 조사한 결과, 처리구별 차이(53.9~67.9%)는 인정되지 않았으나, 배양 7일째 배반포형성률은 각각 14.5, 25.4, 17.3 및 12.4%로서 25uM의 $\beta$-ME처리구가 유의적(P<0.05)으로 높은 배발달률을 나타내었고, 총세포수에 있어서는 대조구와 처리구간 유의적인 차이가 인정되지 않았다. 따라서 돼지 난포란을 성숙배양할 때, 25uM $\beta$-ME를 첨가배양하는 것이 양질의 돼지체외수정란을 생산하는 하나의 방법으로 조사되었다.다.natural objects and was popular at the time of Yukjo Dynasty, and there are some documents of that period left both in Japan and Korea. "Hyojedo" in Korea is supposed to have been influenced by the letter design. Asite- is also considered to have been "Japanese Letter Jobcheso." Therefore, the purpose of this study is to look into the origin

• The Science & Technology
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• v.32 no.7 s.362
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• pp.26-27
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• 1999

한국과학기술원 의과학연구센터는 세계 최초로 젖에서 고가의 의약품인 백혈구 증식인자(G-GSF)를 다량으로 생산할 수 있는 형질전환 흑염소 '메디'를 탄생시켜 관심을 모으고 있다. G-CSF의 값은 1g에 9억원이며 세계 시장 규모는 연간 1조7천억원이다. 그런데 새로 탄생시킨 형질전환 흑염소 한마리가 연간 생산할 수 있는 G-CSF의 양은 150g으로 10마리면 전세계 시장의 수요를 충족시킬수 있다는 계산이다.

• Proceedings of the Korean Society of Embryo Transfer Conference
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• 2003.10a
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• pp.143-143
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• 2003

• Proceedings of the Korean Society of Embryo Transfer Conference
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• 2004.10a
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• pp.61-61
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• 2004