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RISS 인기검색어
- 검색키워드
- 저자 : 오상집(S.J. Ohh) (검색결과 23 건)
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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.
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국산 인산 칼슘제의 사료적 가치에 관한 연구 3 . 어분 급여시 인산칼슘제가 산란율 및 난각질에 미치는 영향
한인규,오상집,김춘수 ( In K . Han,Sang J . Ohh,Chun S . Kim ) 한국축산학회 1979 한국축산학회지 Vol.21 No.2
This experiment was conducted to compare the utilizability of locally produced tricalcium phosphate (TCP) with that of imported dicalcium phosphate (DCP), tricalcium phosphate, bone meal with a total of 350 White Leghorn laying hens of 48 weeks old. The results obtained during 16 weeks of experimental period are summarized as follows. 1. Different sources of calcium and phosphorus had no apparent effects on the egg production rate, egg mass and feed efficiency when a large amount of fish meal at the level of 8 % was used in the laying rations. 2. It was found that there was no difference in the egg shell thickness, the contents of crude ash, calcium and phosphorous of egg shell when various sources of phosphate supplements were used. 3. No difference was also found in the nutrient utilizability among experimental diet groups. 4. There were little differences in body weight gain of hens in all the treatments, however, the mortality was slightly higher for the control group than the groups received inorganic phosphorus through various phosphate supplements. The results obtained from present experiments showed that there were no differences in the egg production rate, egg mass, egg shell quality, feed efficiency and mortality by the various phosphate supplements when fed with a large a mount of fish meal (8%). Present evidence indicated that the quality of locally produced TCP in comparable to that of imported TCP or DCP.
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국산 인산 칼슘제의 사료적 가치에 관한 연구 4 . 어분무급여시 인산칼슘제가 산란율 및 난각질에 미치는 영향
한인규,오상집,김춘수 ( In K . Han,Sang J . Ohh,Chun S . Kim ) 한국축산학회 1979 한국축산학회지 Vol.21 No.2
In order to compare the nutritive values of locally produced tricalcium phosphate (TCP) with that of imported tricalcium phosphate(TCP), dicalcium phosphate(DCP) and that of bone meal when no fish meal was supplied, a total of 350 White Leghorn laying hens of 65 weeks old were fed for a period of 5 weeks. The results obtained are summarized as follows. 1. No differences were found in egg production rate, egg mass arid feed efficiency between various phosphate supplements, however, the control group receive no fish meal showed considerable decrease in egg weight, production rate and egg mass. 2. There was no difference in egg shell thickness, and content of Ca and P among various phosphate supplements, however, egg-shell thickness of control group was slightly thinner than that of inorganic phosphate fed group. The contents of Ca and P of egg-shell for the control group were lower than other groups. 3. The crude ash content of tibia was slightly decreased for both bone meal group and the control group, however, there were no differences between tricalcium phosphate groups and dicalcium phosphate group in the content of crude ash of tibia. The calcium and phosphorous contents of tibia of hens fed various phosphate supplements were higher than those of control group. 4. No difference were obtained in nutrient utilizability among various sources of phosphorus fed groups, However utilizability of dry matter and crude protein were slightly decreased for the control group. 5. The decrease in body weight during experimental period was observed for all then groups, especially was notable for the control group. The mortality observed during experimental period was not different among calcium phosphate groups, however, was slightly higher for the control group than the other groups. The results obtained from the present experiment showed that there were no differences in the nutritive value of locally produced TCP when was compared with imported DCP or TCP. It was also suggested that supplement of inorganic phosphorus for layers maybe very important when no fish meal was used in the laying rations.
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향미소의 첨가효과에 관한 연구 1 . Feednectar 의 자돈 및 브로일러 사료에의 첨가효과
한인규,오상집,하종규,김춘수 ( In K . Han,Sang J . Ohh,Jong K . Ha,Chun S . Kim ) 한국축산학회 1978 한국축산학회지 Vol.20 No.2
Two experiments were conducted to study the effects of use of Feedrectar on the growing performances of young pigs (Expt. I) and broiler chicks (Expt. II). In the Experiment I, 200 crossbred baby pigs weighing approximately 11㎏ of body weight mere used in five treatments of Feednectar 0%, Feednectar 0.05%, Feednectar 0.1%, sucrose 2% and a palatability-testing groups during 4 weeks of experimental period. In the Experiment II, a total of 270 broiler chicks of Shaver strain were employed in three treatments consisted of 0%, 0.05%, 0.1% of Feednectar for a period of 8 weeks. The results obtained are summarized as follows: 1. It was found that the body weight gain of young pigs (9.4%) and broiler chicks (5.6%) was significantly (P$lt;0.05) improved when the Feednectar was added is the rations of these experimental animals at the level of 0.1%. 2. The amount of feed consumed by the experimental pigs and chicks was also consider ably (P$lt;0.05) increased as the level of Feednectar in the diets increased. 3. Present data indicated that the feed efficiency of animals fed Feednectar was also improved, although no statistical significance was found between treatments except 0.1%, Feedneetar fed broilers that showed significant difference at the level of 5%. 4. It was apparent that the addition of Feednectar at the level of 0.1% would be recommendable for better growing performances of early weaned pigs and broiler chicks. 5. Palatability test conducted by young pigs revealed that the addition of either Feednectar or sugar could improve the palatability of experimental diets. 6. Shark color of broiler chicks was slightly improved by the use of Feednectar, although the significant difference was not found. 7. It was found that the experimental chicks fed Feednectar utilized the dry matter, crude protein, crude fat and carbohydrate in the diet more efficiently than control group. 8. Protein loss in the rations of pigs and broilers was alway less for Feednectar added diet than control diet during the storage period.
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Methionine 및 Lysine 의 첨가로 인한 부로일러 사료의 단백질 절약 효과
한인규,오상집,조홍래,윤재인 ( In K . Han,S . J . Ohh,H . R . Cho,J . I . Yoon ) 한국축산학회 1978 한국축산학회지 Vol.20 No.6
To investigate the protein sparing effect of ㎗-methionine and l-lysine, a series of feeding and metabolism trial with a total of 480 broiler chickens of Hubbard strains was conducted for a period of 8 weeks. Eight treatments of (1) control, (2) basal (protein content of basal diet was 2% less than control diet), (3) basal + methionine 0.1%, (4) basal+methionine 0.2%, (S) basal + lysine 0.1 %, (6) basal + lysine 0.2%, (7) basal + methionine 0.1% + lysine 0.1% and (8) basal + methionine 0.2% + lysine 0.2% with 4 replicates were employed in this experiment and the obtained result: are summarized as follows 1. Methionine and lysine contents, of experimental diets were generally lower than NRC (1971) requirement but only methionine content of 0.2% lysine supplemented group was slightly higher than NRC (1971) requirement. Lysine content of control group and 0.2% lysine supplemented group was comparable to NRC (1971) standard. 2. It was found that the growth rate of lysine or methionine supplemented group was generally improved. This trend was. more remarkable when lysine and methionine was given at the level of 0.2%. Although feed conversion rate in the metionine and lysine added groups seemed to be improved, significant difference was not found among the treatments. It was proved that growth rate and feed conversion rate were improved as the level of supplementation of methionine and lysine in the rations increased. 3. No statistical difference was found in the nutrient utilizabilities among the treatments. However, the utilizability of dry matter, protein, fat and carbohydrate of chicks received these amino acids was slightly higher than basal group. 4. Data revealed that the production cost per ㎏ of body weight gain was slightly less for the lysine supplemented groups regardless of supplemented level than all other groups. However, it was noted that methionine 0.2% group and lysine 0.2% + methionine 0.2% group required more feed cost per unit gain than control group. Considering growth rate and meat production cost simultaneously, supplementation of these amino acids at the level of 0.1% was most profitable among the other treatments. Based on the above mentioned results it may be concluded that the inclusion of ㎗-methionine and l-lysine which are generally known as two limiting amino acids in the broiler rations Mould be able to spare about 2% of dietary protein (4% soybean meal or 3% fish meal).
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