저장기간에 따른 계육의 지방산 조성에 관한 연구 - 2 . 지방산의 조성변화

김영직,박구부,이한기,정천교 경상대학교 축산진흥연구소 1989 畜産振興硏究所報 Vol.16 No.1

The purpose of this study was designed to comapare the storage stage of spermatozoa in the utero-vaginal (U-V) glands and the infundibular glands of high-fecundity hens. These laying hens were assigned to four group by date intervals after last artificial inseminations. The U-V glands and the infundibular glands in the tissue preparation of the each hen uterus were observed microscopically, and also the appearance rates of spermatozoa-contained U-V glands were compared with those of the infundibular glands. 1. The appearance rates of spermatozoa-contained U-V glands were found to be 27,8%, 28.8, 19.9, 11.1% respectively at the hen groups of 1, 3, 7, 10 days after artificial insemination. 2. The appearance rates of spermatozoa-contained infundibular glands were found to be 0.5, 1.1, 0.6. 0.4% of 1, 3, 7, 10 days after AI and number of spermatozoa contained in a infundibular glands tend predominently to be 1 to 2. So this study cocluded as follows: The appearance rates of spermatozoa-contained glands were found to be higher in the U-V glands than in the infundibular glands and also spermatowa number per gland were more numerous in U - V glands than in infundibular glands.

Levitation 용해법을 이용한 핵생성 및 성장에 관하여

김영직 대한금속재료학회 1990 응고기술 심포지엄 논문집 Vol.1 No.-

오일 Aeration에 따른 엔진의 마찰 및 윤활 특성에 대한 연구 ( A Study on the Engine Friction & Lubrication Characteristics related with Oil Aeration )

김영직,이창희,윤정의 한국트라이볼로지학회 1999 한국트라이볼로지학회 학술대회 Vol.30 No.-

문제해결 프로그래밍에서 테스트주도개발이 컴퓨팅 사고력에 미치는 영향

김영직 한국인공지능교육학회 2020 인공지능연구 논문지 Vol.1 No.2

사료내 생균제, 일라이트, 활성탄 및 목초액의 첨가가 육계의 성장 능력 및 도체 특성에 미치는 영향

김영직,Kim, Y.J. 한국가금학회 2007 한국가금학회지 Vol.34 No.3

We investigated the effects of dietary supplements of probiotics, illite, active carbon and hardwood vinegar on growth performance, feed intake, and pH, shear force, sensory evaluation, meat color and fatty acid composition of meat in broilers. Two hundred broilers were fed diets for five weeks containing 0.2% of probiotics (T1), and 1% of Illite (T2), 1% active carbon (T3), or 1% hardwood vinegar (T4). Body weight gain was higher in T1 and T4 groups fed the starter diet but was the lowest in C and T4 for finishing period (P<0.05). Feed efficiency was not significantly different. In proximate composition, crude fat content of chicken meat were decreased lower in all treatment groups than control, but moisture, crude protein and crude ash were not significantly different. Cooking loss was decreased in T3 and T4 and WHC (water holing capacity) was increased in T3 and T4 groups compared to the other groups. In sensory evaluation, T4 tended to improve the hardness. Redness $(a^*)$ and yellowness $(b^*)$ were no difference between the all treatment groups, lightness $(L^*)$ were higher in T1, T2, T3 and T4 groups than control group (P<0.05). Stearic acid content was lower in T1, T2, T3 and T4 groups, but oleic acid contents were higher in T1, T2, T3 and T4 groups (P<0.05). These results showed that supplementing broiler diets with 1.0% hardwood vinegar may noticeably improve the meat quality of broiler.

곶감 부산물의 급여가 육계의 생산성 및 계육의 지방산 조성에 미치는 영향

김영직,Kim Y. J. 한국가금학회 2005 한국가금학회지 Vol.32 No.3

This experiment was conducted to compare the influences of dietary dried persimmon by-product(DPB) on performance, blood cholesterol and fatty acid composition in broiler chicks. Diets contained 21.5 and $19\%$ CP for the starting and finishing period, respectively. The ME was 3,100kcal/kg in diets for both starter and finisher diets. One hundred sixty chicks were assigned to 4 treatments with 4 replicates at different levels of dried persimmon by-product. Treatments were consisted of 0(control), 1(T1), 3(T2) and $5\%$ (T3) DPB. Body weight gain was higher in treatment groups fed the starter diet but was the lowest in T3 for finishing period. Feed efficiency was not significantly different. In proximate composition, crude fat of chicken meat were increased in diets by addition of DPB than control, but moisture and crude ash was no significantly different. The total cholesterol, HDL, and triglyceride of treatment groups was higher than control. The LDL of control was higher than treatment groups. In fatty acid composition, oleic acid contents of treatment groups were higher than control, whereas stearic, linoleic acid contents lower in meat composition than control. In conclusion, dietary supplementation of DPB at $3\%$ level tended to improve growth performance of broiler chicks.

성게 껍질 분말의 급여가 육계의 생산성 및 무기물 함량에 미치는 영향

김영직,Kim Y. J. 한국가금학회 2005 한국가금학회지 Vol.32 No.1

This experiment was conducted to compare the influences of dietary sea urchin shell powder (SUSP) supplemented to broiler diets on performance, mineral contents and blood cholesterol for 5 weeks. The experimental diets contained 21.5 and $19\%$ CP for the starting and finishing period, respectively The ME was 3,100 kcal/kg of feed in both starter and finisher diets. One hundred sixty chicks were assigned to 4 treatments with 4 replicates and fed one of 4 experimental diets containing different levels of SUSP: 1) Control (commercial feed) 2) T1 (commercial feed with $1\%$ SUSP) 3) T2(commercial feed with $3\%$ SUSP) 4) T3(commercial feed with $5\%$ SUSP). Body weight gain was higher in the T1 group when fed the starter diet (P<0.05), but was the lowest in T1 group for finishing period. Feed efficiency was not significantly different between the control and treatment groups (P>0.05). The total cholesterol of the control was higher than the treatment groups and the HDL-cholesterol were higher in T2 and T3. However, effects of diets containing graded levels of SUSP on LDL-cholesterol and triglyceride contents were not found (P>0.05). The SUSP diets were increased significantly the Fe, Zn and Ca contents of chicken meat, and tended to increase total mineral contents. In conclusion, dietary supplementation of SUSP to broiler diets could be applied to the enhancement of Ca, Fe and total mineral contents levels in chicken meat.

성게 껍질 분말의 급여가 계육의 이화학적 특성에 미치는 영향

김영직,Kim Y. J. 한국가금학회 2005 한국가금학회지 Vol.32 No.1

The experiment was conducted to study the effect of sea urchin shell powder (SUSD) on the sensory evaluation, meat color, fatty acid and amino acid contents of chicken meat. One hundred sixty broilers were fed diets for five weeks containing 0, 1, 3 and $5\%$ of sea urchin shell powder. The shear forces of the treatment groups were higher than the control uoup and the water holding capacity (WHC) was higher in the control group (P<0.05). The heating loss and pH were not significantly different between control and treatment groups (P<0.05). The hardness, juiciness and flavor evaluated by sensory evaluation were improved by treatments, especially in T2 (P<0.05). The meat color of the treatments group showed redder and darker than that of the control group owing to lower L$\ast$ and higher a$\ast$ value. Among fatty acids, oleic acid contents of the treatment groups were higher than that of the control group. The treatment groups showed a significantly higher total amino acid content (P<0.05) compared to the control group. The results of this experiment indicated that dietary SUSP tended to improve the sensory evaluation.

논문 : 금속간 화합물 ( Ni3Al , NiTi , TiAl ) 의 진공용해 및 주조

김영직 대한금속재료학회 ( 구 대한금속학회 ) 1990 응고기술 심포지엄 논문집 Vol.1 No.-

중등학교에서의 온라인수업을 위한 사이버교육시스템 설계 및 구현

김영직,안성훈,김영미 경인교육대학교 교육연구원 2015 교육논총 Vol.35 No.2

이 연구에서는 중등학교의 일반 학생을 대상으로 온라인수업 운영을 위하여 필요한 사이버교육시스템의 설계와 구현에 관하여 살펴보았다. 온라인수업은 2012년 2학기부터 중·고등학교를 대상으로 시범 실시되었다. 중학교는 시·도교육청에서 운영하는 사이버가정학습을 고등학교는 한국교육개발원에서 운영하는 방송통신고 사이버교육시스템을 활용하여 온라인수업을 운영하였다. 기존 시스템은 온라인수업 운영에 있어서 제한적인 기능을 제공하고 있어, 기능 개선의 필요성이 제기되었다. 특히 모든 과정이 온라인으로 진행되는 학습 준비 단계, 학습 진행 단계, 학습 종료 단계에 따라 관리교사, 교과관리교사, 학생에게 필요한 기능을 충족하는 시스템을 새롭게 설계하고 구축할 필요가 있었다. 그 동안, 한국교육학술정보원과 한국교육개발원에서 운영되던 사이버가정학습과 방송통신고 사이버교육시스템을 분석하고, 이용자 설문 조사를 통하여 학업 적령기 학생들의 눈높이에 맞는 홈페이지 구성과 관리교사, 교과관리교사가 역할을 효율적으로 수행하기 위해 필요한 기능들을 도출하여 중학교, 고등학교에 적용이 가능한 온라인수업 시스템을 설계하고 구축하였다. In this paper, We have studied on the design and implement of cyber education system for on-line class. On-line class opened as a model at second term in 2012. The cyber education system of Air and Correspondence High School on-line class was used for on-line class at high school. But the cyber education system of Air and Correspondence High School didn’t have enough functions for on-line class. Specially each function for master teacher, subject teacher and student in process of teaching and learning at on-line class was requiredTherefore, we analyzed the cyber education system of Air and Correspondence High School, surveyed teachers and students and drew functions to need for master teacher, subject teacher and student in process of teaching and learning at on-line class. Also we implemented a cyber education system for on-line class according to functions draw by analysis of Air and Correspondence High School system and survey of teachers and students.