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RISS 인기검색어
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- 저자 : 고영두 ( J . K . Ha (검색결과 3 건)
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고영두,송우준,하정기 ( Y . D . Ko,W . J . Song,J . K . Ha ) 한국축산학회 1975 한국축산학회지 Vol.17 No.1
This feeding experiment was conducted for 6 weeks to study the effect of cobalt supplementation to feed in which the major protein was supplied by either animal or plant sources on growth rate and feed efficiency of young chicks. Day-old 500 female chicks of Fisher line were devided into two groups of animal and plant protein sources, and in each group, five levels of cobalt supplementation (0.0, 0.1, 0.3, 0.6 and 1.0 ㎎/㎏ of feed) were established. The results obtained from this trial were summarized as follows: 1. With the animal protein source, the weight gain obtained with the chicks fed 1.0㎎ of cobalt level was superior to the other, and there was substantial increase in weight gain by feeding cobalt supplemented feeds. 2. With the plant protein source, there were adverse effects on growth rates by feeding cobalt (P$lt;0.05). The growth rates shown with the levels of 0.6 and 0.1㎎ of cobalt were superior to thaw of others. 3. The feed efficiencies achieved by the chicks fed cobalt with animal protein were inferior to those fed cobalt with plant protein, but no statistical difference was found. 4. No toxic effect was observed throughout the experimentation by feeding cobalt supplemented feed.
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병아리사료에 밀기울대체로서 말 ( 柳藻 Potamogeton oxyphyllus Mig . ) 의 효과
하정기,송우준,고영두 ( J . K . Ha,W . J . Song,Y . D . Ko ) 한국축산학회 1975 한국축산학회지 Vol.17 No.2
To evaluate the nutritive values of Duckweed(Potamogeton Oxyphyllus Mig.) replacing wheat bran at the level of 4, 6, 8, 10% in the rations of chicks, 150 female chicks of Babcock strain were allotted into four groups. The results obtained from the feeding trial of 8-week period were summarized as follows: 1. No significant differences among the treatments in the growth rates, feed intakes, and feed efficiencies of chicks were found. 2. Economic feasibility data by fixing the cost of Duckweed meal at 17 won/㎏ showed an increasing order of the feed cost required for 8 weeks per chick in the order of 8%, 6%, 10%, 4.0% and control group. 3. No toxic effects were found throughout the experimentation. The colour of faces excreated were appeared to be dark green, when the birds were received Duckweed. It might be, therefore, concluded that the wheat bran in the ration of chicks could be replaced by Duckweed safely and economically up to about 10% of the total ration.
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아미노산 첨가수준에 따른 산란계용 사료의 단백질 절약효과
곽종형,강대진,고영두,하정기,한인규,김성겸 ( C . H . Kwack,D . J . Kang,Y . D . Ko,J . K . Ha,In K . Han,S . K . Kim ) 한국축산학회 1981 한국축산학회지 Vol.23 No.6
To investigate the protein sparing effect of DL-methionine and L-lysin on the laying hen ration, the present experiment with a total of 288 hens (Hi-sex commercial hens) was carried out for a period of 14 weeks (23-36 weeks). In this experiment 8 treatments ((1) control, CP 16%; (2) basal, CP 14% (3)basal +L-lysine 0.1% ; (4) basal+L-lysine 0.2% ; (5) basal+DL-methionine 0.1 % ; (6) basal+DL-methionine 0.2%; (7) basal+L-lysine 0.1%+DL-methionine 0.1 %; and (8) basal+L-lysine 0.2%+DL-methionine 0.2%) were employed. Metabolism trial was conducted at the end of feeling trial. The results obtained are summarized as follows; 1. The highest egg production was obtained from the group of basal+L-lysine 0.2%+DL-methionine 0.2% and the lowest from the group of basil +L-lysine 0.2%. But no statistically significant difference was found among all the treatments. 2. The heaviest egg weight was obtained from the group of basal+L-lysine 0.2%+DL-methionine 0.2% and the lightest was obtained from basal+L-lysine 0. 1%. But no significant difference was found among all the treatments. 3 . In feed intake, significant (p$lt;0.05) differences were found among treatment groups. Higher feed consumptions were generally resulted from the groups supplemented with L-lysine and/or DL-methionine. 4. Best, feed efficiency was obtained from control group, and the worst from the group of basal+L-lysine 0.1%+DL-methionine 0.1%. But no significant difference was found among all the treatments. 5. Nutrient utilization was not affected by supplementation with L-lysine and/or DL-methionine. 6. Feed cost per Kg egg mass production was in order of basal, basal +L-lysine 0.1%, basal+L-methionine 0.1%, basal+L-lysine 0.2%+DL-methionine 0.2%, control, basal+L-lysine 0.2%, basal+L-lysine 0.1%+DLmethionine 0.1%, and basal+DL-methionine 0.2%. Therefore, based on the results of this experiment, it is concluded that supplementation of L-Lysine and DL -Methionine at the level of 0.2% respectively with the basal ration(14% protein) would be able to spare 2% dietary protein.
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