계란의 콜레스테롤이 동맥경화에 미치는 영향

조헌조 대한양계협회 1984 월간 양계 Vol.16 No.2

가루, 크럼블 및 펠렛사료 급여가 브로일러육의 이화학적특성에 미치는 영향

조헌조,강신곤,차용호,김병기,우선창,여영수 한국동물자원과학회 2002 한국축산학회지 Vol.44 No.5

본 시험은 대형육계에 있어서 생산체계를 조사하기 위하여 영양수준(2∼3주령, ME 2,843㎉/㎏, 체 19.46%; 4∼6주령, ME 3,072㎉/㎏, 체 17.85%; 7∼8주령, ME 3,109㎉/㎏, 체 17.26%)에 따른 사료가공형태(대조구: 가루→크럼블→펠렛 ; 처리1구 : 가루→크럼블→펠렛 ; 처리2구 : 크럼블→크럼블→펠렛 ; 처리3구 : 펠렛→펠렛→펠렛)로 활성탄(1%)을 혼합첨가하여 8주(56일간)동안 실험한 결과는 다음과 같다. 계육의 일반성분에서 조단백질 함량이 22.22∼23.40%였고, 조지방 함량은 0.30∼0.45% 범위로서 처리구가 낮았으며, 특히 처리2구는 0.28로서 가장 낮았다(P<0.05). 계육의 가열감량은 대조구가 높은 경향이었고, 전단력과 pH는 처리3구가(1.21㎏, 5.85) 낮은 경향이었다. 육색에서 명도(L)는 대조구와 처리2구가 가장 밝았고, 적색도(a)는 0.19∼0.85의 범위였고, 황색도(b)는 처리1구가 가장 낮았다. 관능검사와 조직감, 향미에서 시험구간에서는 유의차는 없었다(P<0.05). 지방산에서의 myristic acid와 arachidoic acid는 처리1구가, oleic acid과 지방의 불포화도가 처리2구가 가장 높았다(P<0.05). 또한 아미노산에서 cystine, glutamic acid, valine, iso-leucine, leucine, lysine, arginine은 처리1구와 처리2구가 다른 처리구보다 높게 나타났다(P<0.05). This study was conducted to investigate the effect of nutrient level (metabolizable energy and crude protein, 2,843㎉/㎏ and 19.46% at 2 to 3 week, 3,072㎉/㎏ and 18.38% at 4 to 6 week, 3,109㎉/㎏ and 17.26% at 7 to 8 week, respectively, and feeding form was ground → crumble → pellet in control, ground → crumble → pellet in treatment 1, crumble → crumble → pellet in treatment 2, pellet → pellet → pellet in treatment 3 for broiler during 8 weeks. Also the effects of supplemented with charcoal(1%) in total mixed treatment feed was investigated. The crude protein, crude fat in broiler meat range from 22.22∼23.40%, and 0.30∼0.45%, respectively. Especially, treatment 2 was lower than other treatment (P<0.05). The heating loss tend to be increased at control. Shear force and pH tend to be decreased at T3(1.21㎏, 5.89). Control and T2 were significantly lighter in color (“L”) than the T1 and the “a” ranged from 0.19∼0.85 and T1 was the lowest “b” among other treatment. The panel test, texture, Aroma were not significantly among the an experimental group (P<0.05). Myristic acid and arachidonic acid of T1 was significantly higher than that other treatment and oleic acid, U/S(unsaturated/ saturated) rate T2 was significantly higher than other experimental group(P<0.05). Among amino acid, cystine, glutamic acid, valine, iso-leucine, leucine, lysine, arginine in T1 and T2 was higher than control and T3.

Estrogen 처리가 웅추의 발육과 장기중량에 미치는 영향

조헌조,변명대 ( H . J . Cho,M . D . Byun ) 한국축산학회 1977 한국축산학회지 Vol.19 No.1

To determin the practical level estrogen administration, 100 Demura lime cockerels of 5 weeks were used in this experiment and alloted. into 5 lots at complete random according to the level of estrogen injected. In order to study the effect of estrogen administrations on growth, dressing percentage and weight of organs in Demura male chicks, estrogen was administrated into breast muscle at the different levels of 5,000IU, 10,000IU, 15,000IU and 20,000IU for 35days. The results are summarized as follows: 1. Body weight at the end of experimental period in E₄ group was the most(10.78%) showing the significance with P$lt;0.01 and E₁ and E₂ group apparently lighter than control group statistical significance were P$lt;0.01 in body weight gain among the treatments used estrogen. 2. The weight of comb was significantly increased P$lt;0.01 in all treatments compared with the control. Testicle`s weights had no significant differences among treatments but in all treatments the weight of testicles compare with the control had decreased. 3. Liver weight showed significance with P$lt;0.01 among the groups. There was no significance among other groups except E₄ group. 4. There were no significant differences in the weight of heart and spleen. Weights of heart and spleen were slightly reduced by the hormone treatment. 5. In the weight of hypophsis, there was no difference in all tested groups. 6. Weight of gizzard showed the significance with P$lt;0.01 among the groups, and there was no significant differences among other groups except E₄ group. The weight of intestine was obviously increased P$lt;0.05 in all tested groups, and, its weight was increased in order of E₂ group, E₁ group, and E₄ group. 7. Dressing percentage showed the significance with P$lt;0.05 among the groups and were increased in order of E₂ group, E₃ group, E₁ group and E₄ group.

면양에 있어서 성장 및 산모량에 (産毛量) 영향을 미치는 불변요인효과에 관한 연구 Ⅲ. 생시 이유시 및 18개월령 체중에 대한 불변요인효과 추정

조헌조,강대진,최광수,오대균,김영직 ( H . C . Cho,D . J . Kang,K . S . Choi,D . K . Oh,Y . J . Kim ) 한국축산학회 1989 한국축산학회지 Vol.31 No.11

The study analyzed in the study were collected from the results of performance-testing on Corriedale, Polwarth at the Nawweon Branch of the National Animal Breeding Institute from January 1981 to May 1985. Birth weights, weaning weights, body weight at the age of 18-month were analyzed; and constants and least-squars means for the traits were estimated by the least-squares methods. The results are summarized as follows: 1. Years of birth affected significantly body weights at birth, at weaning and at the age of 18-month in corriedale and Polwarth(p $lt;0.01). The constant estimates of years of birth for birth weights ranged -0.167∼0.208㎏ in corriedale and -0.113∼0.089㎏ in Polwarth, and the corresponding figures for weaning weights were estimated -1.655∼1.509㎏ and -1.983∼2.051㎏; and the estimates for body weight at the age of 18-month were -1.982∼2.746㎏ and -1.757∼1.884㎏, respectively. 2. The effects of ages of dam were significant for birth weights and weaning(p $lt;0.01), but were not influential for body weights at the ages of 18-month. The constant estimates of ages of dam ranged -0.124∼0.079㎏ for birth weights and -0.664∼0.631㎏ for weaning weights in Corriedale, and the corresponding estimates in Polwarth were -0.133∼0.086㎏ and -0.628∼0.921㎏ respectively. Lambs from above two-year-old matured ewes were heavier than those from two-year-old ewes. 3. Sex of the individual lamb greatly affected birth weights and weaning weights in Corriedale and Polwarth, but no significant differences were found between lamb sexes in birth weights in polwarth compared with the birth and weaning weights of ewe-lambs those of ram-lambs were 0.08㎏ heavier in Corriedale and 0. 06㎏ heavier in polwarth, and weaning weights of ram-lambs were 1.22㎏ heavier in corriedale and 1.02㎏ in Polwarth. 4. Types of birth had significant effects on body weighs at birth and weaning in Corriedale and Polwarth(p $lt;0.01). Singles were heavier than twins by 0.68㎏ in corriedale and 0.48㎏ in polwarth at weaning In body weights at the age of 18-months singles were superior to twins by 0.54㎏ in Corriedale and by 2.84㎏ in Polwarth, and a significant difference was detected only in polwarth

한우 체외수정란이식에 의한 산자 생산

조헌조,김주현,송상현 韓國受精卵移植學會 2000 한국동물생명공학회지 Vol.15 No.3

The objective of this study was to improve the efficiency of bovine embryo transfer by transferring of Hanwoo embryos into Hanwoo or Holstein recipients. The cryopreserved or fresh in vitro produced(IVP) embryos were transferred into uterine horn contralaterally or ipsilaterally to the corpus luteum. The recipients were inseminated by artificially on the next day of estrus. The pregnancy was diagnosed by rectal palpation at 60∼90 days after transfer of the embryos. The pregnancy rate by transfer of one or two embryos was 78%(7/9) and 74%(31/42), respectively. The pregnancy rates according to the grade of corpus lutea of recipients was 75% (20/27) and 82.0%(18/22) at the grade of A and B, respectively. Ten(67.0%) of 15 Holstein recipients transferred with IVP Hanwoo embryos and 5(42.0%) of 12 Holstein recipients transferred with frozen IVP Hanwoo embryos were pregnant. The single and twin calving ratio in Hanwoos was 77.0%(10/13) and 23.0%(3.13) in the recipients transferred with IVP embryos and 64.0%(7/10) and 27.0%(3/10) in the recipients transferred with frozen IVP embryos, respectively. Twenty-four pregnant cows following transfer of IVP embryos, 21(88.0%) calved the normal calves, and 2(8.3%) aborted. When the frozen IVP embryos were transferred, 16 pregnant cows calved 14(88.0%) normal calves and 2(13.0%) aborted. In conclusion, when one or two IVP bovine embryos were transferred into recipients, the A and B grade of corpus luteum resulted in high pregnancy rates. For the production of twin calves, transfer of the IVP or frozen IVP embryos could be suitable.

양계산업과 가격안정

조헌조 대한양계협회 1984 월간 양계 Vol.16 No.7

면양에 있어서 성장 및 산모량에 영향을 미치는 불변요인효과에 관한 연구 2 . 생시체중 및 이유시 체중에 대한 품종간 교잡효과 및 이유시 체중에 대한 유전력 추정

조헌조(H . C . Cho),강대진(D . J . Kang),최광수(K . S . Choi),오대균(D . K . Oh),김영직(Y . J . Kim) 한국축산학회 1988 한국축산학회지 Vol.30 No.7

The data analyzed in the study were collected from the results of performance-testing on Corriedale, Polwarth, Romney Marsh and breed-crosses at the Namweon Branch of the National Animal Breeding Institute from January, 1980 to May, 1985. Theresultswere summarized as follows: 1. Mating systems affected significantly body weights at birth and weaning (P$lt;0.01). The least-squares means estimated for birth weight were. 3.72㎏ in pure bred Polwarth, 3.90Kg in Romney Marsh × Polwarth crossbred, 3.94㎏ in Pure bred Corriedale, 4.21㎏ in Romney Marsh × Corriedale crossed and 4.47㎏ in pure bred Romney Marsh; the corresponding for figures for weaning weights were 17.08㎏, 19.43㎏, 19.82㎏ and 20.97㎏, respectively. 2. Heritability estimates for weaning weight were 0.44±0.135 in corriedale and 0.41±0.204 in Polwarth.

Estrogen 의 처리가 웅추의 발육과 장기중량에 미치는 영향

조헌조 ( H J Cho ),박양일 ( Y I Park ) 한국축산학회 1970 한국축산학회지 Vol.12 No.4

One hundred Demura line cockerels of 5 weeks old were alloted into 5 lots at random according to the level of estrogen injected (control: 0 IU, E1 : 5,000IU, E2 : 10,000IU, E3 : 15,000IU, E4 : 20,000IU). The body weight gain, chick mortality, dressing percentage and development of some organs in cockerels were observed through 5 weeks from July 12, 1970. Body weight gain of E3 or E4 was higher than that of control cockerels by 2.67% and 10.78 respectively. However, the lower dosage of estrogen reduced the body gain by 3.47% in E1 and 2.43% in E2, compared with the control cockerels. Ertrogen injection improved the dressing percentage of cockerels as follows; 64.9% in control, 67.2% in E1, 72.2% in E2, 68.2% in E3, 66.8% in E4. A marked decrease in the weight of comb and testis were observed. The weight of comb and testis in the cockerels of estrogen injection were only 1/3 to 1/5 of those in control cockerels. Liver and intestines of all the estrogen injection cockerels gizzard of E3 and E4 were larger and spleen of all the estrogen injection cockerels, pituitary gland of E1, E3, and E4, heart of E1, E2, E3 were smaller, compared with those of control cockerels.

부록 : 한우 체외수정란이식에 의한 산자 생산

조헌조(H . J . Cho),김주현(J . H . Kim),송상현(S . H . Song) 경상대학교 농업생명과학연구원(구 축산진흥연구소) 2000 畜産振興硏究所報 Vol.27 No.1

잠용분말의 첨가가 초생웅추의 발육에 미치는 영향

조헌조 ( H J Cho ),박양일 ( Y I Park ) 한국축산학회 1970 한국축산학회지 Vol.12 No.4

This experiment was carried out to investigate the dietary effects of Silkworm pupa powder on the growth, feed consumption and feed efficiency of chicks. Five different trials involving one hundred Demura male baby chicks, with five replications for each, were carried out for a period of 9 weeks from the day of hatching. For the experimental diets, 10% fish meal of the control diet was replacek with Silkworm pupa powder of 15, 20, 25 and 30% respectively. The results obtained from this study were summarized as follows: 1. As the level of Silkworm pupa powder supplementation increased, average daily gain and full body weight were increased significantly. 2. The amounts of feed consumed indicate no significant differences among the five treatment lots. As the level of Silkworm pupa powder dietary increased, feed intake rate was decreased. 3. The feed efficiency of the experimental groups was improved over the control group. Among the experimental groups, the higher the levels of Silkworm pupa powder added were resulted in better for the feed efficiency as well. 4. There was no influence of Silkworm pupa powder dietary supplementation level on the chicks mortality. 5. As the level of Silkworm pupa powder supplementation increased, feed cost for the body weight gain was decreased. 6. In the view point of cost analysis for experimental diets the treatment of P₃ lot was much superior to that of others treatment lot`s. 7. Based on the results of economical analysis of Silkworm pupa diets, the proper supplementation level appears to be the addition of 25% level replacing fish meal.