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RISS 인기검색어
- 검색키워드
- 저자 : 안병홍 ( Chong H . Kwack (검색결과 3 건)
- 무료
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고령토의 사료적가치에 관한 연구 1 . 고령토의 첨가수준이 병아리의 사료효율및 경제생산에 미치는 영향
곽종형,안병홍,하정기,강대진 ( Chong Hyung Kwack,Byung Hong Ahn,Jeung Key Ha,Dae Jin Kang ) 한국축산학회 1979 한국축산학회지 Vol.21 No.2
This experiment was carried out to investigate the effect of kaolin supplementation from 1 % to 6 % on the performance of egg type chickens of babcock. The results obtained were as follows 1. Body gain of chicken fed the different levels of kaolin was not affected by the levels of kaolin supplementation. There was no difference on the body gain between control treatment and kaolin-supplemented treatments, and between kaolin-supplemented treatments. 2. Feed intake of chicken fed the different levels of kaolin was slightly increased as the levels of kaolin supplementation were increased. However, there were no statistical differences between treatments. 3. Feed conversion of chicken fed the different levels of kaolin was slightly decreased as the levels of kaolin supplementation were higher. However no statistical differences were found out on the feed conversion between treatments. 4. In the economical analysis, total feed cost was slightly higher as the levels of kaolin supplementation were higher. Feed cost required per ㎏ body gain was slightly decreased till the 3 % supplementation of kaolin and greatly increased above 4 % supplementation of kaolin. Feed cost of the kaolin-supplemented treatments was slightly higher compared with that of control-treatment.
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고구마 펠릿트 사료의 급여수준이 부로일러의 영양소이용율에 미치는 영향
곽종형,안병홍,한인규 ( Chong Heong Kwack,Beong Hong Ahn,In K . Han ) 한국축산학회 1976 한국축산학회지 Vol.18 No.5
This experiment was carried out to investigate the effect of different levels of pelleted sweet potato on the nutrients utilization of broiler chickens. The results obtained were summarized as follow: 1. The utilization of dry matter was slightly increased as the replacement level of sweet potato was higher. However, there were no statistical differences between treatments. 2. The utilization of crude protein in starter chickens(0-4 weeks) was slightly improved as the replacement level of sweet potato increased but that of growing chickens (5-8 weeks) was decreased as the substitution level of sweet potato increased. 3. The utilization of crude fiber for both starter and growing chickens was significantly (P$lt;0.05) decreased as the replacement level of sweat potato was increased. 4. The utilization of nitrogen free extract (NFE) was slightly improved as the replacement level of sweet potato was increased. On the other hand the utilization of crude fat was not affected by the level of sweet potato used in the broiler rations. 5. In the comparative utilization of nutrients between starter and growing chicken, the utilization of dry matter and crude fiber was higher for the growing chickens than for the starter. Crude protein was better utilized or the starter than for the growing chickens. However, utilization of crude fat and NFE was not affected.
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양계용에너지 사료로서 고구마의 이용에 관한 연구 제1보 옥수수대치사료로서 고구마 펠릿트의 급여수준
곽종형,안병홍 ( Chong H . Kwack,Byung H . Ahn ) 한국축산학회 1975 한국축산학회지 Vol.17 No.3
The feeding value and maximum available level of sweet potato as a substitute for corn in the chick diets, which was formed in either all-mash or pellet, were studied. Thirty day-old female chicks of Stareross 288 were alloted into 12 lots fed on either mash or pellet with sweet potato to the level up to 30% of chick diets. All the experimental diets were formulated to contain iso-calorie and iso-protein. For the feeding periods of 0 to 7 weeks, 8 to 14 weeks and 0 to 14 weeks, the body wt. gain, feed intake, feed conversion and feed economy were observed and the efficiency of nutrients utilization of different diets was also examined at the end of feeding period. The results obtained were as follows: 1. The body weight gain of chicks were found significantly more in pelleted diet than in all-mash diet for the feeding periods of 0 to 7 weeks and 0 to 14 weeks. However, the body wt. gain was not significantly different between the substitute levels of sweet potato for any feeding period. For the period of 0 to 7 weeks the chicks fed pelleted diet with 30% sweet potato got significantly more body wt. gain than the chicks fed all-mash diet without sweet potato. 2. The feed intake of chicks were found significantly more in pelleted diet than in all-mash diet for the feeding period of 0 to 7 weeks and 0 to 14 weeks. However, the feed intake of chicks was not significantly different between the levels of sweet potato of the diets. Feed conversion of chicks fed pelleted diet was similar to that of chicks fed all-mash diet. The feed conversion of chicks fed all-mash or pelleted diet containing 30% sweet potato was worse than that of chicks fed all-mash diet without sweet potato. 3. The chicks fed all-mash or pelleted diet with the different substitute levels of sweet potato for corn were similar in the efficiency of nutrient utilization, which was determined at the end of feeding period, such as dry matter, crude protein, crude fat, crude fiber and nitrogen-free extracts of the diet. 4. The feed cost required for 1㎏ body wt. gain of the chicks fed pelleted diet was similar to that of the chicks fed all-mash diet. The diets containing the higher levels of sweet potato was found a slightly more expensive for 1㎏. body wt. groin of chicks. From the above results, it is concluded that the substitute of sweet potato for corn up to 25% in pelleted diet is more profitable, comparing with all-mash diet containing 60% corn only, if the sweet potato meal were home-produced.
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