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RISS 인기검색어
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- 저자 : 한인규 ( Kyu H . Myung (검색결과 2 건)
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국산 인산칼슘제의 사료적 가치에 관한 연구 2 . 저수준의 어분급여시 인산칼슘제가 부로일러의 성장능력 및 경골내 칼슘·인의 축적에 미치는 영향
한인규,오상집,명규호,박종만,김춘수 ( In K . Han,Sang J . Ohh,Kyu H . Myung,Jong M . Park,Chun S . Kim ) 한국축산학회 1978 한국축산학회지 Vol.20 No.6
In order to compare the utilizability of calcium and phosphorus from locally produced tricalcium phosphate (TCP) with that of the imported TCP, dicalcium phosphate (DCP) or bone meal when fed with small amount of fish meal 360 broiler-type chicks of one day old were used for 6 treatments consisted of Control Ⅰ, Control Ⅱ, Imported TCP. Local TCP, Improted DCP and Bone meal group. The results obtained during 5 weeks of experimental period are summarized as follows. 1. It was found that; the body weight gain for birds received various sources of inelegancies phosphates was significantly (P$lt;0.05) higher than for birds received no phosphate or 4% fish meal (Control Ⅱ group). Control Ⅱ group also gained more body weight than Control Ⅰ group. Feeding local tricalcium phosphate, imported dicalcium phosphate and bone meal could significantly (P$lt;0.05) Improved the feed efficiency. 2. It was evidenced that feed intake for Control Ⅰ group was significantly (P$lt;0.05) depressed than for other groups. Although no statistical significances were found among other treatments, the amount of feed intake were tended to increase by the use of calcium phosphate supplements. 3. No difference was observed in nutrient utilizabilities either among treatments or between control and treated groups. 4. The tibia ash. content of broilers fed control Ⅰ diet was significantly (P$lt;0.05) lower than that of others. It was also found that tibia ash content of broilers fed control Ⅱ diet was higher than that of control Ⅰ group. Calcium and phosphorus content of tibia was also higher for the broilers fed various phosphate supplements than control groups as was shown in the case of tibia ash content. 5. Present data indicated that the mortality of broilers during experimental period increased as the level of phosphorous in diets decreased and Ca : P ratio was widened. The results obtained from the present experiments showed that the feeding value of locally produced tricalcium phosphate was comparable to that of imported tricalcium phosphate in body weight gain, feed efficiency, mortality and tibia content of ash, calcium and phosphorus.
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명규호,박종만,한인규 ( Kyu H . Myung,C . M . Park,In K . Han ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5
This experiment was carried out to investigate appropriatencess in application of NRC (1977) protein requirement for broiler chick in Korea. Growth rate, feed efficiency, nutrient utilizability and feed cost affected by dietary protein levels(23-21%, 11-19%, 19-17% and 17-15% respectively in starting and finishing period) and sexes were examined. Results obtained from the present study can be summarized as follows: 1. It was found that growth rate was significantly improved (P$lt;0.01) as the dietary protein level was increased. Significant differences in growth rates of both male and female were found among all the different protein levels (P$lt;0.05). 2. Significantly less feed (P $lt;0.05) has been consumed by the chicks fed low level of dietary. protein in both male and female. Male consumed slightly more feed than female did, and significance was found at only 19-17% dietary protein level (P$lt;0.05). 3. No statistical difference (P$lt;0.05) was found among protein levels or between both sexes except female at 23-21% dietary protein level. But feed efficiency was improved Tightly as the level of dietary protein increased. 4. Utilizability of dry matter, crude protein, ether extract and NFE in the rations have been slightly improved with increment of dietary protein level. Increasing the dietary protein level resulted in improved nitrogen retention. 5. Feed cost per ㎏ body weight gain of chicks was the cheapest when the dietary level of protein was the lowest, and that of male was cheaper than that of female.
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