돈방 상부공간을 이용한 가토사육이 돼지의 증체에 미치는 영향

정현승,한인규,유동준,김철욱 ( H . S . Chung,I . K . Han,D . J . Yoo,C . W . Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.7

This experiment was carried out to investigate the effects of the falling feces and residual roughage when rabbit was raised on the interior upper space of the pig pen on the growth of 43 pigs farrowed. Animals were fed either formula feed only (A), formula feed + rabbit feces (B), formula feed + rabbit feces + residual roughage (C), or formula feed + residual roughage (D). Body weight gain, feed consumption and feed conversion of the group A were significantly (p$lt;0.05) poorer, than those of the other groups. Feed cost required to gain 1 ㎏ was considerably (p$lt;0.05) lower in the group C than in the other groups. The concentration of urea N in blood plasma of group D was significantly (p$lt;0.05) higher than those of the other groups. Ham and fat portions of the group B were significantly heavier than those .of the group A.

돈사상부공간을 이용한 가토사육이 돈의 증체에 미치는 영향 제4보 . 가토분뇨 및 잔사의 자유채식이 사료의 급여수준을 달리했을 때 육성 - 비육돈의 증체에 미치는 영향

정현승,정장용 ( Hyun Sung Chung,Jang Young Jung ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5

This experiment was carried out to determine the effect of liberal feeding of rabbit feces and residual forage on the growth of growing-finishing pigs subject to restricted feeding in which the daily allowance of formula feed was 3 % of body weight, compared with 4 % in the controls. The rabbit feces and residual forage were to be dropped from the hutches above the pig barns. Eight pigs of the same litter gave the similar initial body weight of 40㎏ and were alloted in equal numbers to the control and experimental groups. The results from feeding trial for 2 months are summarized as follows 1. The body weight gain for 2 months was averaged 44.9 ㎏ and 43.0㎏ in the control and experimental pigs, respectively. However, there was no significant (P$gt;0.05) difference in the body gain between two groups. 2. The feed conversion was improved slightly in the experimental group (2.8) as compared with the control (3.4). 3. The palatability of rabbit feces and residual forage to pigs was decreased during the late finishing period. 4. The liberal feeding of rabbit feces and residual resulted in the decrease of about 60 won in the feed cost for 1 ㎏ body weight gain of pigs. 5. The pigs fed rabbit waste and residual forage were found to be normal clinically.

돈사상부공간을 이용한 가토사육이 돈의 증체에 미치는 영향 제3보 . 가토 분뇨 및 잔사의 자유채식이 사료급여수준을 달리했을 때 이유자돈의 성장에 미치는 영향

정현승,이을희 ( Hyun Sung Chung,Ell Hee Lee ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5

지리산 면양목장조성에 관한 연구 제6보 지리산의 목초재배시험

정현승,문점동,이종렬,김상철 ( H . S . Chung,J . D . Moon,J . R . Lee,S . C . Kim ) 한국축산학회 1974 한국축산학회지 Vol.16 No.1

Orchardgrass, tall fescue, ladino clover, and alfalfa were sown on the plowed native grasslands of 600 to 900m altitude in the Mt. Chiri on September 10, 1970. Germinating date, winter survival ratio, plant length at each time of 5 successive cuttings, and the pasture yield through October, 1971 were observed. The soil properties of the fields were characterized as pH: 5.5 and loamy, and O.M. : 13.3%. The fertilizers such as N, P₂O_5, K₂O, lime, and borax were applied on the fields. And yield of native grasses, which were fertilized or not, was determined. 1. The germinating dates were ranged from September 19 to September 26 and were 2 to 3 days later on the upper lands. Tall fescue was germinated 2 to 4 days earlier than other pasture species and alfalfa was the latest germinating pasture species of them. 2. Orchardgrass showed the highest winter survival ratio (58.6 to 72.2%) and alfalfa showed the lowest (31.6 to 64.5%). The winter survival ratio of alfalfa and tall fescue decreased critically in the fields of 700 to 900 and 900m altitude, respectively. 3. The average plant length of 5 cuttings was ranged from 31.6 to 37.3 ㎝ in the 3 field locations. The shorter pasture grew in the higher altitude. The orchardgrass was longest in all the fields (45.0 to 58.2 ㎝). 4. Orchardgrass showed the most highest hay yield (719 to 825 ㎏/10a) and alfalfa showed the least (645 to 725 ㎏/10a). The native grasses showed the hay yield of 803 to 825㎏/10a in the non-fertilized plot and 877 to 829㎏/10a in the fertilized plot in the first year.

닥나무의 사료가치에 관한 연구 제 2 보 . 닥나무 재배방법 및 엽의 급여가 육성 - 비육돈의 증체에 미치는 영향

정현승,이을희,정장용 ( Hyun Sung Chung,Ell Hee Lee,Jang Young Jung ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5

This experiment was carried out to determine the yield, chemical composition and feeding value of the leaves and rhytidome of Broussonetia kaxirtoici, Sieb. The feeding value of the leaves fed liberally to growing-finishing pigs was determined under the restricted feeding in which the daily allowance of formula feed was 3 % of body weight, compared with 4 % in the controls. Ten pigs of the same litter were alloted in equal numbers into the control and experimental groups and conducted the feeding trial for 2 months. The results obtained are summarized as follows : 1. The annual yield of green leaves of Broussonetia kazinoki, Sieb. grown on the College Experimental Farm was averaged about 2,000㎏/10a. 2. The chemical composition of the leaves was determined on the dry matter basis as follows ; crude protein : 11.4%, crude fat: 4.74%, crude fiber : 32.33%, crude ash : 13.43% and nitrogen free extracts : 37.16%. 3. The chemical composition of the rhytidome was determined on the dry matter basis as follows ; crude protein : 13.43%, crude fat : 5.94%, crude fiber : 33. 19%, crude ash ; 33.60% and nitrogen free extracts : 27.26 %. 4. The body weight gain for 2 months was averaged 33.8㎏ and 36. 2㎏ in the control and experimental pigs, respectively. However, there was no significant (P$lt;0.05) difference in body weight gain between two groups. 5. The feed conversion was improved slightly in the experimental group(3.2) as compared with the control (3.8). 6. The liberal feeding of the green leaves resulted in the decrease of about 60 won in the feed cost for 1 ㎏ body gain of the growing-finishing pigs. 7. The leaves were found palatable to the pigs and the pigs fed the leaves were found to be normal clinically.

지리산 면양목장조성에 관한 연구 제7보 자연초지에서의 면양사육시험

정현승,문승식,염월형,강창중 ( H . S . Chung,S . S . Moon,W . H . Yom,C . J . Kang ) 한국축산학회 1974 한국축산학회지 Vol.16 No.1

Five of ten Corriedale weaning ewe-lambs were fed native grasses with or without some concentrate supplements on the native grasslands for sheep range development in the Mt. Chiri from July 6, 1970 to October 30, 1971. 1. The daily body gain of ewes fed native grasses with or without concentrate supplements was averaged 110g and 122g respectively for the first grazing period and 64g and 63g for the second grazing period. There were no significant differences in the daily gain for the periods between both groups. The daily gain for the first dry-lot feeding period in the ewes fed supplements was 46g, which was significantly (P$lt;0.05) more than that in the ewes fed native grasses (33g), but there was no significant difference in the over-all average daily gain through the experimental period between both groups (65 vs. 63g). 2. The total digestible nutrients required for 1㎏ body gain were 10.549㎏ and 7.973㎏ respectively, in the ewes fed native grasses with or without concentrate supplements through the whole periods. 3. The fleece yield in the groups of feeding the native grasses with or without supplements was averaged 3.43 and 3.45㎏ respectively. 4. Three of four or five ewes used were pregnant in the group of feeding native grasses with or without supplements. 5. In the group of feeding native grasses with supplements, three of five ewes were infected with Lumbar paralysis from which one of them was died during the first grazing period. 6. The gross revenue and labor cost per ewe were similar in both groups, but the concentrate supplement cost was 2,987 won which resulted in decrease of farm income for the group of feeding native grasses with concentrate.

연탄회 급여가 돼지의 철분주사대용 및 미량광물질공급원으로서의 효과

정현승,한인규,유동준,김철욱 ( H . S . Chung,I . K . Han,D . J . You,C . W . Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.6

This experiment was conducted to study the effects of Briquette ash as a substitutive material for Fe injection and mineral supplements in pigs from April 1, 1981 to July 19, 1984. Birth weight of the Briquette ash fed group was slightly higher than that of the control group. From birth to weaning time the Briquette ash caused high survival rate (p$lt;0.02) compared to the control groups. During growing-finishing period, pigs fed Briquette ash ad libitum gained more weight and consumed more feed. Feed conversion was also improved by feeding Briquette ash ad libitum. In conclusion, it might be suggested that the pigs farrowed from sow fed ad libitum Briquette ash could grow without Fe injection and when fed Briquette ash ad libitum, grorving-finishing pigs could gain more rapidly.

연탄회 ( 練炭灰 ) 급여가 돈의 성장 - 육성 - 비육에 미치는 영향에 관한 연구 2 . 포유중 자돈에 철분주사대용 및 이유자돈의 육성기에 미량 광물질 공급제로서 첨가급여 효과

정현승 ( Hyun Sung Chung ) 한국축산학회 1983 한국축산학회지 Vol.25 No.6

This experiment was conducted to investigate the effects of Briquette ash addition as the substitutes for Fe at sucking arid micro-mineral matter at growing after weaning on growth, feed efficiency, heath conditions and palatability in pigs on basis of the obtained from April 1 to May 31, 1982, at pigpen, Department of Animal Sicence, Jinju Agricultural & Forestry Junior Technical College. The results obtained are as follows: 1. When fed liberally Briquette ash as the substitute for Fe at sucking, there is a superior tendency to the growth and health conditions in pigs. 2. The growth in the Briquette ash 3% addition was no significant (p$gt;0.05) differences among the other groups. But the growth in that group was superior. 3. Feed consumption was not significantly (p$gt;0.05) different between the control and the treatments. 4. Feed cost(won) required per ㎏ gain weight were 636.40(T1), 646.72(T2), 672.52(C) and 684.56(T3). 5. Hemoglobin contents in the treatments was higher than those in the control. 6. The palatability of Briquette ash was good and health conditions was nornal, too.

연탄재 어즙흡착사료가 육성돈의 성장과 경제성에 미치는 영향

정현승(H . S . Chung),김철욱(C . W . Kim),한인규(I . K . Han),하종규(J . K . Ha),최윤재(Y . J . Choi),유동준(D . J . Yu) 한국축산학회 1989 한국축산학회지 Vol.31 No.8

This experiment was conducted to study the effects of substituting ration with fish soluble absorbed briquette ash feed and its economic values on growing pig. A total number of 60 pigs was divided into 4 treatments: Control, T1, T2, and T3 each substitution with 0, 3, 5 and 10% of ration with fish soluble absorbed briquette ash feed. The results were summarized as follows; 1. Average daily feed intake was highest it T3(1.61kg) and T2(1.59kg) $gt; T1(1.55kg) $gt; control(1.54kg) respectively showing that the feed intake increases according to the increasing level of concentrated fish soluble. 2. Average daily gains of pigs fed fish soluble absorbed briquette ash Iced were significantly (p $lt;0.01) higher compared to those of pigs fed control diet. In addition, feed conversion was also improved significantly(p $lt;0.01) showing that the best result was in T2 group. The optimum level of substitution seems to he 5% though the difference between treatments was not statistically significant. 3. The digestibility didn`t show significant differences between the experimental one diets. 4. There was no significant changes in chemical composition during storage period of nearly one month. 5. In economic analysis feed cost required per kg body weight gain was cut down by 19.14 Won in TI; 24.62 Won in T2 ; 21.10⁴Won in T3 than that in the control diet.

건지황 첨가가 이유자돈의 발육에 미치는 효과

정현승 ( Hyun Sung Chung ),곽종형 ( Chong Hyung Kwak ),강대진 ( Dae Jin Kang ) 한국축산학회 1967 한국축산학회지 Vol.9 No.1

Dried Jiwhang (Rehmannia Glutinosa, Liboschitz ex Fischer & Meyer) supplemented with 1%, 3% or 5% in ration was fed to 4 Berkshire pigs respectively and the other 4 pigs were fed with basal radon. The results obtained were as follows: 1) There was significant difference (p$lt;,0.05) for body weight gain between treatments. Body weight gains of pigs on the ration supplemented with 5% of Jiwhang were more than those of the other pigs. 2) Feed efficiency of the ration supplemented with 5% or Jiwhang was also highest. 3) The ration supplemented with 3% of Jiwhang was most palatable to pigs, and the ration with 5% of Jiwhang was more palatable to pigs than the basal ration or the ration supplemented with 1 % of Jiwhang. 4) Economical feeding value based on income of in basal ration was highest in 5% supplemented ration and that for 1% supplemented ration was slightly lower than that for control ration. 5) During the experimental period all of the pigs used were in good health and had no clinical symptoms. From the above results it is estimated that 5% of dried Jiwhang can be supplemented in the pig ration successfully.