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브로일러에 대한 아미노산 이용율의 측정에 관한 연구 1 . 두가지 측정방법에 의한 옥수수 , 수수 , 대두박 및 어분의 아미노산 이용율
채병조,한인규 ( B . J . Chae,I . K . Han ) 한국축산학회 1984 한국축산학회지 Vol.26 No.4
Two experiments were conducted with broiler-type chicks 1) to compare the bioavailable amino acid values of corn, sorghum, soybean meal and fish meal as measured by two different bioassays including total fecal collection (TFC) method of Bragg et al. (1969) and true metabolizable energy (TME) assay of Sibbald (1976), and 2) to predict the accurate bioavailable amino acid values of the test materials by a feeding trial. For apparent amino acid availability (AAAA), the results obtained from TFC group showed insignificant differences among the test ingredients. In TME group, however, the AAAA values of the carbohydraterich feedstuffs including corn and sorghum were significantly (P$lt;0.01) lower than those of protein-rich feedstuffs including soybean meal and fish meal. Between the two bioassays, the average AAAA values of the test feestuffs were significantly (P$lt;0.01) higher in TFC groups. Unlike the AAAA values, the average true amino acid availability (TAAA) values among feedstuffs were not significantly different in both TFC and TME groups. Between the two bioassays, however, the average: TAAA values of the test feedstuffs were slightly higher, but not significantly different, in THE than in TFC groups. Body weight gain and feed efficiency were slightly improved when the diets were formulated by the availability data rather than chemical contents of corn and soybean meal. Between TFC and TME groups, there were no differences in the growing performance of broiler chicks. Therefore it was impossible to say that which assay was under of overestimated the amino acid bioavailability values of the feedstuffs.
브로일러에 대한 아미노산 이용율의 측정에 관한 연구 1 . 대두박의 급여량이 아미노산 이용율에 미치는 영향
채병조,한인규,이상철 ( B . J . Chae,I . K . Han,S . C . Lee ) 한국축산학회 1984 한국축산학회지 Vol.26 No.4
A soybean meal (5-20-637) was forced fed at 3 levels (10, 30 and 50g) to 30 hrs-starved broiler chicks (7-week of age) and the excreta voided during the subsequent 24 hrs were collected. An unfed group consisted of 5 birds provided metabolic fecal plus endogenous urinary amino acid excretions. As the level of feed input increased from 10 to 50g the apparent amino acid availability (AAAA) values were slightly (P$lt;0.05) increased, but the opposite trend was shown for true amino acid availability (TAAA) values of soybean meal. And between 30 and 50g of input levels, significant differences were not detected for both AAAA and TAAA values of the ingredient.
육성돈에 대한 발효유 제조부산물과 생균제의 성장촉진 및 하이방지효과 ( 下痢防止效果 ) 에 관한 연구
한인규,채병조,김성겸 ( I . K . Han,B . J . Chae,S . K . Kim ) 한국축산학회 1983 한국축산학회지 Vol.25 No.2
An experiment was conducted to study the effects of feeding milk fermentation by-product (MFBP) and probiotics on the growing performance and prevention of diarrhea of the growing pigs. In this experiment 144 heads of three-way crossbred (Landrace x Large White x Duroc) growing pigs weighing approximately 11 ㎏ were employed into six treatment groups consisted of control. MFBP-A, MFBP-B, Streptococcus faecium, bacillus toyoi and antibioties (colitracin) for about 7 weeks of experimental period. The results from the present study were summarized as follows. 1. Average daily gain (P $lt; 0.01) and feed efficiency (P $lt; 0.05) of MFBP-A, MFBP-B, probiotics and antibiotics fed groups were significantly better than those of control group. However, it was found that there were no significant differences among the experimental groups, The amount of feed consumed per pig a day was not altered by the addition of MFBP, probiotics and antibiotics. 2. Incidence of diarrhea, although without significant difference, was slightly reduced by supplementing MFBP, probiotics and antibiotics in the young growing pigs. 3. Pigs fed MFBP and probiotics utilized the dietary protein and fat more efficiently, although statistical significance was not detected. In conclusion, it may be suggested firstly that probiotics and milk fermentation by-product can improve the growth rate and feed efficiency of pigs, and secondly that these effects are possible through (1) improvements in nutrient utilizability and nitrogen retention and (2) diarrhea prevention. Therefore, it could be inferred that the milk fermentation by-product can be used as a feed additive for growth promotion and diarrhea control in the young growing pigs as have been probiotics already marketed.
부로일러에 대한 처리별 어유 ( 魚油 )의 사료 이용성에 관한 연구
한인규,채병조,오상집 ( I . K . Han,B . J . Chae,S . J . Ohh ) 한국축산학회 1982 한국축산학회지 Vol.24 No.1
In order to evaluate the nutritive value of crude and refined fish oils as a high energy feed, a feeding experiment was conducted employing 3 days old 200 broiler chicks of Hisex-Hibro strain for a period of 6 weeks. Birds were distributed into 5 experimental treatment groups with 4 replicates per treatment, consisting of control (starter; rice bran oil, grower; soybean oil), crude fish oil 5%, deoxidized fish oil 5%, decolorized fish oil 5% and deodorized fish oil 5%. The results obtained are summarized as follows: 1. Linoleic acid content of fish oils used in this study was considerably lower than soybean oil and rice bran oil, but arachidonic acid content of the fish oils was slightly higher than those of the vegetable oils. The acid value of crude fish oil was considerably higher (17.30) than those of other oils. 2. Body weight gain was slightly decreased by feeding crude or refined fish oils at 5% level. And it was found that body weight gain obtained from 5% deodorized fish oil group was significantly (p$lt;0.01) decreased. 3. There was a significant (p$lt;0.01) decrease in feed consumption for crude or refined fish oil groups. The amount of feed intake by deodorized fish oil group was significantly (p$lt;0.01) smaller than those of other fish oil fed groups. 4. No difference was observed in feed efficiency (feed/gain) and nutrients utilizability of the experimental diets among treatments. 5. Mortality was not affected by oil sources, but only crude fish oil group showed 2.5% mortality. From the results of present experiment it may be concluded that the use of deoxidized fish oil rather than crude fish oil would be desirable in broiler rations because of the lethal effect of the crude fish oil. Further study maybe necessary for the use of refined fish oils or mixture of fish oil with the other animal or vegetable oils, as feedstuffs and for the determination of the proper level of usage in broiler rations.
단위동물에 있어서 칼슘 및 인의 영양에 관한 연구 1 . 브로일러에 있어서 칼슘 , 인 및 비타민 D3 의 교호작용에 관한 연구
오상집,한인규,채병조 ( S . J . Ohh,I . K . Han,B . J . Chae ) 한국축산학회 1982 한국축산학회지 Vol.24 No.3
To search for the interaction of three antirachitogenic nutrients, calcium, phosphorus and vitamin D₃, two experiments were conducted using a total of 512 commercially hatched broiler chicks of Hisex Hybro strain. One experiment, arranged in 2 x 2 x 3 factorial design were used to study the growing performance of the chicks, supplemented with two levels (0.9, 0.45%) of calcium, two levels (0.7, 0.35%) of phosphorus and three levels (0, 200, 400 IU/㎏ diet) of vitamin D₃. Another experiment was designed to study the changes in serum calcium and phosphorus contents with or without vitamin D₃ dose. A 2 x 2 x 2 factorial arrangement with 4 replications of chicks was employed with two levels (0 and 0.66 g per day) of calcium, two levels (0 and 0.51 g per day) of phosphorus and two levels (0, and 30 IU per day) of vitamin D₃. The result obtained are summarized as follows. 1. There were significant effects on body weight gain with single administration of calcium, phosphorus and vitamin D₃ and also showed marked effects on growth rate with calcium x phosphorus interaction and calcium x vitamin D₃ interaction. However, present evidence indicated that the effect of phosphorus x vitamin D₃ interaction and calcium x phosphours x vitamin D₃ interaction on growing performance were not significant. 2. Feed intake were significantly (p $lt; 0.01) influenced by the single administration of calcium and vitamin D₃ and by the interaction of calcium x phosphorus, calcium x vitamin D, phosphorus x. vitamin D and calcium x phosphorus x vitamin D. There was not a significant effect of single phosphorus administration on feed intake. 3. It was found that feed conversion were also greatly influenced by the silagle supplementation of calcium, phosphorus and vitamin D₃. And also influenced by calcium x phosphorus, calcium vitamin D₃, phosphorus x vatimin D₃ and calcium x phosphorus x vitamin D₃ interaction. 4. Data revealed that there was no marked improvement in growing performance by in; creasing vitamin D₃ level to 400 IU/㎏ to the chicks, previously fed no or low vitamin D₃. But there was a great improvement on feed conversion with increasing level of vitamin D₃ to the chicks. 5. No significant differences were found in nutrient utilizabilities among treatments. Protein utilizabilities were gradually increased with increasing level of vitamin D₃ in optimum calcium fed groups and vice versa in low calcium received group. 6. Analytical indicated that raising the level of dietary vitamin D₃ led to increase in tibia ash content and calcium and phosphorus content of tibia. Tibia ash contents were greater in optimum calcium fed groups than in suboptimum calcium treated groups. However, there was no difference in tibia ash content between optimum and suboptimum phosphorus fed groups. 7. Supplementing no vitamin D₃ led to high mortality percent during experimentation. There was also significant difference in mortality between low and optimum calcium fed groups and not between dietary phosphorus level. 8. Present data showed that serum calcium level was, increased in contrast with the serum phosphorus level, decreased after vitamin D₃ administration. This tendency was evident at 12 hours after dose of vitamin D₃. When the optimum calcium was offered, the serum phosphorus contents was decreased after vitamin D₃ administration but showed no changes in no prior vitamin D₃ administration. It could be concluded that the supplementation of vitamin D₃ to the broiler chick diet is indispensable for the normal growth, especially in suboptimum level of calcium and phosphorus diet. It was also apparent that increasing vitamin D₃ above 200 IU per ㎏ diet did not show additional effect on the growing performance of chicks. It would be necessary to undertake more-detailed study for the time course information of serum calcium and phosphorus change after vitamin D₃ dose.