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      • KCI우수등재

        Semi Broiler 종계용 대추사료의 영양수준에 관한 연구

        김춘수,강유성 ( C . S . Kim,Y . S . Kang ) 한국축산학회 1973 한국축산학회지 Vol.15 No.3

        The experimental objectives were to observe the feeding and economic value different grower feed, that is, commercial diet, high fiber diet, low lysine diet, low lysine-low protein diet during the growing period and also for the effect on the lad ing performance in semi-broiler breeder. The results obtained were as follows; 1. On the body weight gain and feed efficiency during the growing period, all experimental groups were responded favorably over the control group and especially low lysine B and low lysine-low protein B groups were improved 15% in weight gain and 12% in feed efficiency over the control group. 2. On the age at sexual maturity, all experimental groups were delayed for a period of 1-2 weeks. 3. As for the egg production and production efficiency during the laying periods, low lysine A and B groups were very favorably responded over the control, compared to that of other experimental groups. 4. The analysis on the economic return indicates that the return for all experimental groups was greater than that of the control the best economic return attained was for the low lysine B group with an increase of 15% over the control group.

      • KCI우수등재

        부로일러에서 피혁분의 사료적 가치에 관한 연구

        김춘수,이남형 ( Chun Su Kim,Nam Hyung Lee ) 한국축산학회 1977 한국축산학회지 Vol.19 No.3

        Trials have been conducted to determine the acceptability of hydrolyzed leather meal (HLM) in the broiler diets. The results obtained were summarized as follows; 1. The crude protein and ash content of HLM was found to be respectively 66.65 and 14.45 percent. Also, glycine and methionine content was 17.05 and 0.26 percent. 2. There was not significantly difference among the groups in the weight gain, feed intake and feed efficiency. 3. in vico and in vitro protein digestibility were found to be 82.73 and 70.85 percent. 4. Chromium content of HLM was 1.14 percent and chromium in liver and kidney eras higher as to increase level of HLM in formula feed, but there was no apparent accumulation of chromium in muscle to 4 percent level. This results indicate that hydrolyzed leather meal for the place of oil cakes can be used up to 4 percent level in the broiler ration.

      • KCI우수등재

        볏짚의 사료가치 증진에 관한 연구 제1보 발효 볏짚 사료의 소화율 검정 시험

        김춘수,배무,이남형 ( Chun Su Kim,Mu Bae,Nam Hyung Lee ) 한국축산학회 1977 한국축산학회지 Vol.19 No.5

        This experiment was conducted to study the nutritive value (TDN) of rice straws which were produced by chemical treatment and the fermented methods for cattle and pig. The results obtained were summarized as follows: 1. TDN value of the fermented products of rice straw for cattle was ranging from 50.5 to 58.4%. The value was 10% higher than the one for pig. TDN value of raw straw for cattle was attained as 41.0%. 2. The nutritive value of rice straw with aerobic fermentation after 0.25% Ca(OH)₂-steamed treatment did not improve significantly over the 3% NaOH-steamed treatment. 3. The fermented product of rice straw by Asp-9 resulted in higher TDN value than other strains. 4. It was tested TDN value of rice straws which were produced differently by the fermented methods. The process F-II using Asp-9 resulted in higher TDN value but little significant difference were observed among fermentation methods.

      • KCI우수등재

        동 ( Cu ) 과 아연 ( Zn ) 의 영양학적 상호작용에 관한 연구

        김춘수,강유성 ( C . S . Kim,Y . S . Kang ) 한국축산학회 1971 한국축산학회지 Vol.13 No.1

        These experiments were conducted to study on the interrelationship between Cu & Zn and the effect of dietary copper sulfate on the growth of broiler chicks. The experimental trials were composed of two parts. For the experiments, a broiler type chicks, cobb and starbro, were raised for a period of four weeks from the day of hatching, involving 9 to 8 different dietary treatments. The results obtained from these studies are summarized as follows; 1) Addition of 100 to 150 ppm dietary copper significantly(p$lt;0.01) improved the rate of growth and the feed efficiency of chicks. At the level of 150ppm copper added, the weekly weight gain of the experimental chicks was improved by 28% over that of the control group. 2) Inclusion of dietary copper excess of 600ppm was resulted in a deterioration of the growth, exerting a copper toxicity, but this was corrected by the addition of dietary zinc, indicating the presence of an antagonistic interrelationship of copper with zinc. 3) Such antagonistic relationship of copper with zinc was further evidenced by the analysis of copper and zinc retained in the chick liver as shown in figure 1.

      • KCI우수등재

        고구마의 사료화에 관한 연구 3 . 양돈 사육시험

        김춘수,이남형,한인규,하종규,윤덕진 ( Chun Su Kim,Nam Hyung Lee,In K . Han,Jong Kyu Ha,Duk Jin Yoon ) 한국축산학회 1976 한국축산학회지 Vol.18 No.3

        The experiments were designed to evaluate nutritive value of whole sweet potato (root to stem and leaf ratio in 3 : 1), being pressed and sun-dried, for the pig grower. The potato was substituted with corn meal at the levels of 0, 10, 20 and 40% on air dried matter basis in the first trial. For the subsequent trial, the substitution level was extended to 60% basis. In the first feeding trial, overall growing performance including weight gain and feed efficiency, and the results of carcass analysis were not significantly different between the control and the potato groups. Nutrient digestibility of sweet potato was, however, inferior to that of the control group. The digestible energy value of potato sample was estimated as 2,678 ㎉/㎏. Contrarily, for the second feeding trial, the of reds of feeding the potato upon weight gain, feed efficiency and nutrient availability were somewhat decreased with increasing the level of potato but little significant difference was attained between the control and the groups of 40% potato feeding. The feed cost required per ㎏ weight gain for the potato groups of upto 40% feeding was tuned cut to be favorable over the control.

      • KCI우수등재

        보리짚 - 계분 싸일레지가 한우의 성장능력에 미치는 영향

        김춘수,이남형 ( Chun Su Kim,Nam Hyung Lee ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5

        This experiment was carried out to determine the digestible nutrients in alkali treated barley straw-manure silage and to assess the growth performance of yearling cattle, when wild grass hay was partly substituted with straw-manure silage for 6 months. The results obtained are as follows : 1) For digestibility, DCP and TDN value of wild grass hay were 0.32% and 28.99%, respectively, while barley straw-manure silage contained DCP of 14.39% and 62.58 for TDN. 2 ) Six native bull calves, weighing average 110㎏, were used for the feeding trial. Average daily gain for the wild grass fed was 0.27㎏, compared with 0.49㎏ for the silage group. This was 81% increase in weight gain for the silage fed over the grass hay fed. The feed efficiency was 14.78 for the grass hay fed, compared with 8.61 for the silage fed The efficiency improvement of the silage fed was 40% over the grass hay fed.

      • KCI우수등재

        일반 채란용 대추사료의 영양수준에 관한 연구

        김춘수,강유성 ( C . S . Kim,Y . S . Kang ) 한국축산학회 1973 한국축산학회지 Vol.15 No.2

        The experimental objectives were to study the effects of different grower diets of low lysine and low protein-high energy on the grower and laying performance of Leghorn type of breed. The results obtained were as follows: 1. During the growing period, the body weight of low lysine and lour protein-high energy groups were some what less than the control, but feed efficiency of each experimental group was improved 15 to 20% over the control group. 2. On the age of sexual maturity, two experimental groups were delayed for a week. There were little differences in egg production and egg weight but feel efficiency of low lysine and low protein-high energy group was improved 10 and 5% respectively over the control. 3. The analysis on the economic return indicates that the return for two experimental groups were greater than the control group and the best economic return attained was for the low lysine groups.

      • KCI우수등재

        육성돈에 대한 왕겨발효사료의 사료적가치에 관한 연구

        김춘수,한인규,윤덕진 ( Chun S . Kim,In K . Han,D . J . Yoon ) 한국축산학회 1975 한국축산학회지 Vol.17 No.2

        A feeding trial was conducted to evaluate the feeding value of rice hull which was fermented by Kyongnam Ferment Feed Co. to increase its feeding values. Twenty five growing-finishing swines(crossbred of Landrace × Yorkshire) were randomly allotted to 5 treatment lots; they were control(commercial finisher feed), 25% fermented feed, 50% fermented feed, 75% fermented feed and 50% unfermented feed. The results are summed up as follows. 1. Crude protein and riboflavin content of fermented feed was higher than that of unfermented feed. On the other hand, NFE content reduced after fermentation and analysis result of reducing sugar content showed no fermentation effect. 2. Control and 25% fermented feed gained most and 75% fermented feed gained least while the 50% fermented feed and 50% unfermented feed were similar. Three groups were significantly different in body weight gain at 1% level. Increased feed intake of fermented feeds may be attributed to the increased palatability. Feed efficiency changed with tendency similar to body weight gain. 3. Carcass analysis result revealed no definite differences among the treatments except 75% fermented feed that showed the poorest carcass grade. 4. Digestibility of NFE was decreased while that of crude fiber was increased by fermentation. Digestible energy of fermented feed(866 ㎉/g) was a little higher than that of unfermented feed(807 ㎉/㎏). 5. The fermentation effect on rice hull seems not so great as to make the fermented feed available in large proportion for swine diet. However, the overall result of this experiment suggests that reasonable using level can be obtained within 20%.

      • KCI우수등재

        육성돈에 대한 카나다산 채종박의 급여효과

        김춘수,한인규,윤덕진,최진호 ( C . S . Kim,In K . Han,D . J . Yoon,J . H . Choi ) 한국축산학회 1975 한국축산학회지 Vol.17 No.2

        An experiment was conducted employing 36 Landrace × Yorkshire crossbred weighing an average of 23 ㎏ to evaluate the nutritive value of Canadian rapeseed meal for growing-Finishing swine. Shown below are the results obtained. (1) Crude protein content of the rapeseed meal studied was 34.4% and the amino acid composition of the meal was similar to the previously reported data. (2) Pigs fed either 5 or 10% of rapeseed meal consumed less feed and gained less weight than those fed the control diet. Improvement of feed efficiency was demonstrated by rapeseed meal fed pigs. Differences in feed intake and feed efficiency were significant (p$lt;0.05). (3) The results of digestion and balance trials indicated that protein digestibility and nitrogen retention of diets including rapeseed meal were slightly lower than the control diet without any statistical significance. (4) The protein of rapeseed meal was 67.8% digestible and the values of total digestible nutrients(TDN), and digestible energy(DE) were 60.8% and 2,703 ㎉ per ㎏ as fed, respectively. (5) It appeared that the growth depressing effect of rapeseed meal accounted for the low palatability of the meal rather than the previously reported toxic effect. (6) Pigs fed rapeseed meal yielded less percentage of live weight as carcass, but produced carcasses with thinner backfat than those fed control diet.

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