Saanen 과의 누진교잡에 의한 재래산양 개량 시험 제1보 Saanen 과 재래산양의 교잡종에 대한 월령별 체중변화

이길왕,최광수,설동섭,이기만 ( K . W . Lee,K . S . Choi,D . S . Sul,K . M . Lee ) 한국축산학회 1973 한국축산학회지 Vol.15 No.4

The data from 112 purebred and crossbred goats produced by matings of Korean native goats and Saanen, which were investigated at Livestock Experiment Station since 1963, were analysed by least square method to investigate changes of body weights of the native goats by grading up with Saanen. This procedure adjusted the measurement data for environmental effects of year of birth, age of dam and litter size. The results obtained were as follows; 1. The body weight was measured and adjusted at birth, weaning, 12 and 18 months of age as 1.83㎏, 6.99㎏, 14.51㎏ and 18.90㎏ in Korean native goats, 2.98㎏. 12.25㎏, 25.49㎏ and 36.93㎏ in purebred Sannen, 2.69㎏, 11.14㎏, 23.03㎏ and 29.27㎏ in the first filial generation, and 2.78㎏, 11.85㎏, 24.77㎏ and 36.19㎏ in the second graded generation, respectively. 2. The body weights of first filial and second generation were heavier than those of native goats through all months of age. The increment of body weight in the first filial generation to the native goats was 0.86㎏ at birth, 4.15㎏ at weaning, 8.50㎏ at 12 months and 10.37㎏ at 18 months of age. In the second generation the increment of body weight was 0.94㎏, 4.85㎏, 10.26㎏ and 17.29㎏, respectively. 3. The differences of body weight between purebred Saanen and the first generation were 0.28㎏ at birth, 1.11㎏ at weaning 2.4㎏ at 12 months and 7.6㎏ at 18 months of age, but significant difference was found only at 18 months of age (p$lt;0.01). The body weight of the second generation was slightly lighter by 0.20 to 0.75㎏ than that of purebred Saanen through all months of age. 4. The second generation was heavier than the first generation by 0.08㎏ at birth. 0.71㎏ at weaning, 1.73㎏ at 12 months and 6.92㎏ at 18 months of age, but significant difference was found after 18 months of age (p$lt;0.05).

한우 도체의 품질 평가에 관한 연구 2 . 축산물 도매시장 출하우의 도체중 분포와 도체 단가의 변화

이길왕,정숙근 ( K . W . Lee,S . K . Cheong ) 한국축산학회 1983 한국축산학회지 Vol.25 No.4

This study was carried out to investigate the effect of carcass weight on characteristics of carcass grading and the price of carcass based on 3913 cattle slaughtered every 15 days at wholesale market in Seoul during 1980 and 1981 The results obtained are summarized as follows; 1. Of all cattle data analyzed, the percent of Korean Native Cattle, Holstein, and Others was 75.7, 18.4 and 5.9%, respectively. 2. The mean values of live weight and carcass weight were 428.36 and 226.66㎏, respectively aced dressing percent was 52.9%. 3. The carcass weight which was the most marketed at wholesale market was 209.1-229.0㎏. 4. When carcass weight was about 201.0㎏, the carcass was marketed to unit price of while the unit price of carcass tended to decrease as carcass weight was increased.

Saanen 종과의 누진교잡에 의한 재래산양 개량시험 제2보 , Saanen 종과 재래산양의 교잡종에 대한 비유능력의 변화

이길왕,최광수,탁태영,설동섭,이기만 ( K . W . Lee,K . S . Choi,T . Y . Tak,D . S . Sul,K . M . Lee ) 한국축산학회 1975 한국축산학회지 Vol.17 No.1

The data from 393 purebred and crossbred goats produced by matings of Korean Native Goats and Saanen, which were investigated at Livestock Experiment Station since 1963, were analyzed by least-square method to investigate changes of milking performance of the Korean Native Goats by grading up with the Saanen. This procedure adjusted the measurement data for surveyed year, parity, mating system and for the number of kid born at one birth. The results obtained are as follows. 1. The milk productions of the Korean Native Goats, the first filial, the second, and the third graded generations were 423.91, 90.97, 288.12, 354.81 and 372.76㎏, respectively. Their milk fat percentages were 4.15, 5.72, 5.37, 4.30 and 4.24, respectively. Their lactation periods were 239.7, 173.2, 214.3, 236.2 and 234.2 days, respectively. 2. The milk performances of the first filial, the second, the third graded generation and Saanen were significantly higher than those of Native Goats. The increment of milk character is the filial, the second, and the third graded generation, compared to the Native Goats were 197.15, 263.94 and 281.79㎏ in milk production; 41.14, 63.05 and 61.05 days in lactation period; -0.34, -1.42 and -1.48% in milk fat percentage. 3. The difference of milk production, lactation period and milk fat percentage between the third and the second graded generation was 17.89㎏, -2.00 days and -0.06, respectively. The difference between purebred Saanen and the third graded generation was 51.15㎏ for milk production, 1.55 days for lactation period, and -0.08% for milk fat percentage. However there was no significant difference between them. 4. The individual comparisons among the least square estimates showed that the difference between the 3 and 1 kid per birth was 130.4㎏ for milk production, 29. 4 days for lactation period, and -0.7% for milk fat percentage. The difference between the 3 .and 2 kid per birth was 3.13㎏, 11.6 days and 0.02%, respectively. The difference between the 2 and 1 kid per birth was 41.6㎏, 17.8 days and 0.09%, respectively.

육계사료와 식용유 정제 폐백토(Spent Bleaching Clay) 급여가 육계의 생산성에 미치는 영향

전해열,손장호,이길왕,김선구,강한석,신택순,조병욱,Jeon H. Y.,Son J. H.,Lee K. W.,Kim S. K.,Kang H. S.,Shin T. S.,Cho B. W. 한국가금학회 2005 韓國家禽學會誌 Vol.32 No.4

본 연구는 Spent Bleaching Clay(SBC)를 육계사료의 에너지 공급원으로 활용 가능성을 구명하기 위하여 실시하였다. 부화 직후의 120수의 병아리(한협 3호)를4처리 3반복, 반복당 10수(암수 각각 5수씩)를 Control(T1) 사료에 SBC를 $2.0\%(T2),\;4.0\%(T3)$ 및 $6.0\%(T4)$ 첨가한 4처리로 배치하였다. 시험사료 급여전 1주일은 시판사료를 급여하였다. 4주간의 시험 기간동안 증체중 및 사료 섭취량은 T3 및 T4 처리구에서 증가하는 경향이 인정되었다. 사료효율은 T3구에서 개선되는 경향이 인정되었다. 가슴살 및 다리살에서 치방산 조성을 사료의 처리에 따른 효과는 인정되지 않았다. 육계 초기 및 후기 사료 급여시 모두, 사료중의 건물, 조단백질 및 조지방 이용율은 T4 처리구가 다른 처리구에 비해서 유의하게 감소하였으며(p<0.05), 대사에너지가도 T4 처리구가 다른 3구에 비해서 유의하게 저하하였다(p<0.05). 사료중의 조회분의 이용율은 사료의 처리에 따른 차이는 인정되지 않았다. 결론적으로 본 시험의 결과 육계사료에 $2\~4\%$의 SBC첨가는 육계의 성장 및 사료효율 개선의 가능성이 있음이 사료된다. This study was conducted to evaluate the feasibility of spent bleaching clay(SBC) as an energy resource for meat type chicks. A total of one hundred twenty 1-d old broiler chicks(Han-hyop, No. 3) were divided into four groups and each group was assigned to one of the following diets: 0(T1), 2.0(T2), 4.0(T3) and $6.0\%$ SBC(T4). Each treatment had 3 replications of 10 birds. Before feeding experimental diets, they were fed a commercial diet for a week Body weight gain and feed intake tended to increase in T3 and T4, respectively. Feed efficiency(feed intake/ gain) tended to decrease in T3 compared to other groups. Fatty acid composition of breast and thigh meat was not significantly affected by feeding SBC. Utilization of dry matter, energy, crude protein and crude fat was lower in T4 than in the other groups during both starter and finisher periods(p<0.05). Crude ash utilization was not significantly affected by feeding dietary SBC. These results indicate that broiler diets may be supplemented with 2 to $4\%$ SBC without adverse effect on growth.

한우 번식우의 월동기 야외사육에 관한 연구 2 . 월동기 사육환경과 영양수준이 포유모우와 독우의 체중변화 및 번식능력에 미치는 영향

강수원(S . W . Kang),정창화(C . H . Jung),정연후(Y . H . Jung),이길왕(K . W . Lee),손용석(Y . S . Son) 한국축산학회 1988 한국축산학회지 Vol.30 No.2

This experiment was carried out to investigate the effects of wintering sites and nutritional levels on the body weight changes and reproductive performances of Korean Native Nursing Cows and Calves for winter season. Eighty four heads of nursing cows and calves, respectively, were kept at three different wintering sites (housed, outside and woody land) and two nutritional levels (100 and 150% of NRC recommendation) for 120 days every year from Nov. 30. 1982 to Mar. 29. 1985. In Alpine Experiment station, Daegwallyoung, Korea. The results obtained were summarized as follows 1. When the nursing caws were wintered at three different wintering sites with two nutritional levels, the body weight of the housed group was more slightly increased than any other group, but there was not significantly different among them. However, in the nutritional levels, the body weight of the nursing cows fed at 150% level of NRC recommendation was significantly higher (P$lt;0.05) as compared with that fed at 100% level of NRC and being compared the housed feeding with the out door feeding., it was appeared to be effect of the shelter (the housed feeding) in low level of nutrition (100% of NRC recommendation) but no in high level of nutrition (150% of NRC). 2. Effects of the high nutritional levels on the body weight gains at nursing cows for the wintering period were not prolonged until the time of ad libitum by grazing and the gains that were decreased or not sufficient in low nutritional levels was much more compensated than the high nutritional levels during the grazing season so that the total gains from wintering period to grazing season was tend to the same. 3. The wintering sites and the nutrition levels of nursing cows did not influence the body weight changes of fall calves for wintering season, and it is supposed that the suckled milk or heritability is more highly affected than the supported feed in the gain performance of suckling calves. 4. Being off the wintering season, it was appeared that the reproductive rate of nursing cows in out door feeding group was slightly higher than the housed feeding group, and in low level of nutrition than in high level of nutrition.

계란을 이용한 눈꽃동충하초 재배방법에 관한 연구

강한석 ( H. S. Kang ),손장호 ( J. H. Son ),이길왕 ( K. W. Lee ),김선구 ( S. K. Kim ),조병욱 ( B. W. Cho ),신택순 ( T. S. Shin ),전해열 ( H. Y. Jeon ) 한국유기농업학회 2003 韓國有機農業學會誌 Vol.11 No.1

This study was conducted to established method of culture for Paecilomyces japonica using an egg. Mycelia grew favorably at the temperature of 22~26℃ on eggs. 5.1g of dry matter basis(average 7.2㎝ of longer and 199.6 of numbers) of artificial fruiting bodies were harvested at 60 days after inoculation from one of egg. Commercial fruiting bodies of Paecilomyces japonica from silkworms was used for comparative nutriental contents. Cordycepin contents of fruit bodies of Paecilomyces japonica cultivated on eggs and silkworms were not significantly different. Crude fat contents of fruiting bodies of Paeilomyces japonica cultivated from eggs was significantly higher than from silkworms(P<0.05). Mn and Cu contents of fruiting bodies of Paecilomyces japonica cultivated from silkworms were significantly higher than from eggs(P<0.05),but Na, Mg, Fe and Zn contents were significantly higher from eggs(P<0.05). Glycine, Arginine and Proline contents in the fruiting bodies of Paecibmyces japonica cultivated from silkworms were tend to higher than from eggs, but Serine, cystein, methionine, isoleucine and phenylalanin were tend to higher from eggs. These results were made possible that possible mass production of artificial fruiting bodies of Paecilomyces Japonica cultivated on eggs.