• 종축개량
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• v.21 no.3
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• pp.47-57
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• 1999

번식우를 사육하여 생산된 송아지의 판매 소득에 의존하고 있는 번식농가에 있어 암소의 비육상태는 어떤 상태가 번식에 가장 좋은지 무척 궁금할 것이다. 한우사육농가 중 일부번식농가의 개체는 가여울 정도로 마른 소들을 볼 때도 있고 일부 농가에서는 너무 과비되어 소라기 보다는 돼지에 가까울 정도로 비육 된 한우를 사육하는 농가를 볼 수 있다. 변식우라 하면 너무 마르거나 비육된 것도 좋지 않다는 것은 번식농가들도 잘 알고 있는 줄 안다. 너무마른 번식우는 자기몸을 지탱하기도 어려울 정도이고 과비된 어미소는 체내에 많은 지방이 축적되어 새끼를 낳기도 힘들고 사육비용도 무척 높을 것이다. 어느 정도 적당한 상태로 사육하여야만 송아지도 보기 좋고 잘 자랄 것이며 번식우 사육비용도 적당할 것이다. 그러기 위해서는 농가에서는 번식우의 적당한 상태를 과학적으로 선정하는 기술을 익힐 필요가 있다. 그래서 외국에서 사용하고 있는 BCS(신체조건점수)를 소개하여 양축가들의 번식우 사육에 도움이 되었으면 한다.

• Feed Journal
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• v.2 no.6
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• pp.76-79
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• 2004

먹거리의 안전성이 강조되다 못해 이제는 충분조건이 돼버린 상황에서 최근 무항생제 돼지 사육이 국내에서 성공적으로 이뤄졌다는 소식이 전해졌다. 무항생제 사육이라 하면 사료첨가제 등을 포함해 모든 항생물질을 농장에서 사용하지 않고 농장내로 들여오지도 않으면서 농장을 운영하는 것을 말한다. 도드람양돈조합 소속의 8개 농가로 구성된 ''내추럴포크연구회''의 무항생제 사육 성공사례를 취재했다.

• Journal of Aquaculture
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• v.10 no.2
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• pp.97-103
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• 1997

Larval growth of the oyster, Crassostrea nippona, was investigated at the different conditions such as water volume, depth of culture vessel and initiative feeding time at $23^{\circ}C$. As a result, morphological changes were occurred during the early larval growth. That is, shell length was higher than shell height at the time of D-shaped larvae. Later, the length became equal to the hight when their shell length reached $127\mum$and then shell height increased rapidly. Some of pediveliger larvae with the size of $360\mum\;in\;shell\;length\;and\;385\mum$ in shell height began to temporarily settle on the substrate after 18 days. The result also indicated that the depth of culture vessel turned out to be an important factor rather than water volume for the larval growth. The fist feeding time of oyster larvae appeared to be the first day after fertilization.

• Korean journal of applied entomology
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• v.53 no.3
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• pp.287-293
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• 2014

Matsumuraeses phaseoli is one of the main pests that attack the flowers and pods of red bean (Vigna angularis) and mungbean (Vigna radiata) in Korea. To elucidate the developmental characteristics and over-wintering stage of M. phaseoli, several stages of the insect were observed through artificial rearing under outdoor conditions in Suwon ($37^{\circ}$16'N $126^{\circ}$59'E 35ASL), Korea. In colonies in which neonate larvae were reared at about 2-week intervals for more than a year, the developmental period from larva to adult emergence became longer from spring to summer, but shorter from summer to autumn; aestivation was not observed during the summer season. The colony in which rearing started on Oct 8, 2008 over-wintered as pupae and emerged in late April next year with a survival rate of 6%. However, the colony in which the rearing started on Oct 23, 2008 over-wintered as mature larvae, pupated in late April, and emerged in early and mid-May with a survival rate of 2%. When the fifth instar larvae were transferred outside from the laboratory ($25^{\circ}C$, 15L:9D) between November and February, no larvae could survive during the winter season. Some newly laid eggs and newly emerged adults could not hatch and could not survive, respectively, in outdoor conditions in November and December. These results suggest that neonate larvae of M. phaseoli that hatch in October can over-winter as late larvae or pupae in Suwon, Korea.

• Proceedings of the Korean Aquaculture Society Conference
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• 2001.12a
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• pp.250-251
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• 2001

• KOREAN POULTRY JOURNAL
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• v.42 no.7
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• pp.118-120
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• 2010

경기도 포천시에서 21년째 육계를 사육하는 농장이 있다. 4만5천수 사육에서 금년 초 11만수 규모의 최신식 무창계사를 신축해 첫 출하한 초가농장을 소개하고자 한다. 친환경 사육조건을 갖춰 청정육을 공급하고자 무항생제 인증과 HACCP인증을 준비 중인 이 농장은 최신식 계사 설비나 주변 환경 등 내 외부 청정화 사육환경을 조성해 아름다운농장 가꾸기를 실천하고 있다. 대한양계협회 포천채란지부장이자 포천축협 감사 등 지역 양계산업 발전을 위해 활동하는 초가농장 정영상 대표를 만나 보았다.

• Journal of Life Science
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• v.27 no.6
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• pp.702-707
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• 2017

Insects and their extract have been traditionally used as medicinal resources in Asia. Recently, Gryllus bimaculatus and the larva of Tenebrio molitor, Protaetia brevitarsis, and Allomyrina dichotoma were enlisted as general food ingredients by Korean Ministry of Food and Drug Safety. As the interest in these insects is growing, the detailed investigation is needed for the standardization of suitable and safe rearing techniques. This survey was conducted via personal interviews about edible insect rearing farms in Korea. The basic feed is fermented oak sawdust for P. brevitarsis and A. dichotoma and wheat bran for T. molitor. The various feed additives are blended with each farm's own recipes. The overall growth condition, including sawdust fermentation method, feeding period, and rearing density, varies among the investigated farms. It seems that weight of last instar larva was correlated with the rearing density and duration of the larval period. The heavy metal contents were analyzed after 48 hour starvation and they were very small amount or not detected in investigated insects. We believe that the present data will contribute to develop and standardize the safe rearing techniques of edible insects in Korea.

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2000.05a
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• pp.66-66
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• 2000

• Journal of Sericultural and Entomological Science
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• v.48 no.1
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• pp.16-20
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• 2006

To shorten the labor cost for the production of the fungus, Paecilomyces tenuipies, uncocooning mutant hybrid silkworms as a host was used. The yield of P. tenuipies was reduced when Nd (uncocooning mutant) was used as a host because Nd was smaller than the hybrid Baegokjam that has been used as a typical host. To increase the host weight, Nd was crossed with Jam l23 or Jam 124, and resulted in not only greater weighter but also higher yield of P. tenuipies. The optimum temperature for rearing Nd hybrid silkworms was $3^{\circ}C$ higher than standard temperature of rearing silkworms to increase the naked pupation rate. The optimum time for the infection of P. tenuipies was 12 h at $28.5^{\circ}C$ and 95% R.H., when $1{\times}10^7spores/ml$ of P. tenuipies were sprayed on the surface of the silkworm. The conditions were applicable to both spring-rearing and autumn-rearing.

• Korean journal of applied entomology
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• v.40 no.2
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• pp.111-115
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• 2001

Orius strigicollis Poppies is an indigenous natural enemy of thrips pests in Korea To develop an efficient mass rearing system for Ο. strigicollis, effects of hatchability, egg numbers and egg harvesting time of Ο. strigicollis were measured in cylindrical cage (251 ㎤) under the conditions of photoperiod 16L : 8D, $55\pm$10% RH and $25\pm$$2^{\circ}C$. The hatchability and developmental period of eggs were 88.5% and 5.7 days, respectively. The highest emergence rate (50.8%) was achieved when the number of eggs laid was ranged from 50 to 100 per arena. The proper harvesting time of newly produced adults was 17 days postoviposition. Relationship between the number of resulting adults per female and the number of female adults per arena was Y : -10.7971n (X) +44.659 ($R^2$=0.7619). The generation time (T), the net reproductive rate ($R_{0}$ ) and the intrinsic rate of natural increase ($r_{m}$ ) were 26.5 days, 6.18 and 0.0687, respectively.