국산 인산칼슘제의 사료적 가치에 관한 연구 1 . 칼슘·인 공급제의 종류가 부로일러의 성장효율 및 경골내 칼슘· 인의 축적에 미치는 영향

한인규,손광수,김춘수 ( In K . Han,Kwang S . Sohn,Chun S . Kim ) 한국축산학회 1980 한국축산학회지 Vol.22 No.3

This experiment was conducted to compare the utilizability of calcium and phosphorus in two locally produced tricalcium phosphates (TCP), dicalcium phosphate (DCP) and bone meal with 300 broiler-type chicks of one day old. Chicks were divided into 5 treatments consisted of TCP₁, TCP₂, DCP, Bone meal and Control group for a period of 8 weeks. The results obtained are summarized as follows. 1. The calcium phosphorus contents of TCP₁, TCP₂, DCP and bone meal were analyzed to be 29.98% and 15.72%, 26.64% and 13.51%, 26.62% and 13.51, 23.36% and 5.97%, respectively. Fluorine content of TCP₁, TCP₂, DCP and bone meal was 0.14, 0.09, 0.33 and 0.02%, respectively. 2. Body weight gain, feed intake and feed efficiency were not significantly affected by the source of calcium and phosphorus supplements. However, it was found that chicks received TCP₁ gained more body weight than the birds fed DCP or control diet. 3. No difference was found in nutrients utilizability when different source of phosphates was fed. 4. The ash, calcium and phosphorus contents of tibia in chicks were not influenced by the source of calcium and phosphorus supplements. The results obtained from the present experiment indicate that the utilizability of calcium and phosphorus in TCP was better than that in DCP. It was clear that the nutritive value of TCP would be similar to bone meal or even better than bone meal.

Zeolite 의 사료화에 관한 연구 1 . 육성돈에 대한 Zeolite 급여효과에 관한 연구

한인규,하종규,김춘수 ( In K . Han,Jong K . Ha,Chun S . Kim ) 한국축산학회 1975 한국축산학회지 Vol.17 No.5

Thirty Landrace x Yorkshire crossbreds weighing about 35㎏ were employed to study the effects of substitution of zeolite for wheat bran at the level of 0, 1, 2, 4, 6% and for a commercial diet at 4% level in the growing-finishing swine ration for a period of 12 weeks. The results obtained are summarized as follows: 1. The mean ash content of zeolite was 92.6% and the richest components of ash were SiO₂ (58.4%) and Al₂O₃ (13.7%). 2. Body weight gain and feed conversion rate tended to be affected adversely as the substitution levels of zeolite for wheat bran increased without significant differences. Similar effects were also noted by the pigs fed a diet replacing commercial ration with zeolite at 4% level. 3. The digestibilities of crude protein and nitrogen free extract tended to be improved as the zeolite content of swine ration increased. Similar results were not observed in the digestibility of dry matter of experimental diets.

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.

가금에 대한 인의 적정공급수준 결정을 위한 연구 2 . 인의 공급 수준이 육성중에 있는 산란용계의 능력에 미치는 영향

한인규,손광수,김춘수 ( In K . Han,Kwang S . Sohn,Chun S . Kim ) 한국축산학회 1980 한국축산학회지 Vol.22 No.2

This experiment. was conducted to determine the optimum dietary level of phosphorus in egg-type growing chicks from 0 to 19 weeks of age. A total of 320 White Leghorn chicks of Hisex strain were divided into 5 treatments consisted of 0.44, 0.54, 0.63, 0.72 and 0.82% group for starters, 0.44, 0.52, 0.60, 0.68 and 0.76% group for growers, and 0.42, 0.47, 0.51, 0.56 and 0.61% group for pullet s by levels of total phosphorus supplied, respectively. The results obtained are summarized as follows. 1. The body weight gain, feed intake and fetid efficiency of 0.44 group were the lowest (P$lt;0.05) 3during the starting period of 0 to 6 weeks. However, no significant differences were observed during grower and pullet periods. Feed efficiency for 0.44% group (starter) was the best (P$lt;0.05) during the growing period of 6 to 19 weeks, although -here were no differences in body weight gain and feed intake. 2. It was found that there were no differences in nutrients utilizability among treatments during the growing period of 0 to 19 weeks. It may be concluded that the optimum levels of phosphorus in the ration of starter, grower and pullet were found to be 0.54∼0.72% (starter) 0.44∼0.76% (grower) and 0.42∼0.61%(pullet), respectively.

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.

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.

사료자원 개발을 위한 연구 1 . 부로일러에 대한 해조류의 사료적 가치에 관한 연구

한인규,이봉덕,윤덕진,백인기,김춘수 ( In K . Han,Bong D . Lee,Doug J . Yoon,In K . Paik,Chun S . Kim ) 한국축산학회 1975 한국축산학회지 Vol.17 No.3

A total of 240 five-day-old Starbro broiler chicks was allotted to 4 treatments, 4 replica tes per treatment, according to completely randomized design to find out the effects of substitution levels(0, 2, 4 and 6%) of Korean kelp meal for wheat mill run on the growing performance of experimental birds. Results obtained are summarized as follows: 1. Kelp meals studied were analyzed for the contents of proximate compositions(moisture 15.24%, crude protein 12.84%, crude fat 1.97%, crude fiber 6.02%, nitrogen free extract 36.65%), vitamins, minerals and also for amino acids. It was found that protein quality of kelp meal was as good as wheat bran. 2. Although no significant difference was found among treatments in body weight gain, feed intake, feed efficiency and mortality, the birds fed 4% kelp meal diet showed the best performance in growth rate. 3. In the nutrients utilizability and ME values of finisher diets, no significant difference was found among treatments. 4. Based on these results described above, it seemed that substitution of wheat bran with kelp meal up to 6% level could be used without adverse effect in the broiler ration.

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.

국산 인산칼슘제의 사료적 가치에 관한 연구 2 . 칼슘·인 공급제의 종류가 육성중에 있는 산란용계의 성장효율 및 경골내 칼슘·인의 축적에 미치는 영향

한인규,손광수,김춘수 ( In K . Han,Kwang S . Sohn,Chun S . Kim ) 한국축산학회 1980 한국축산학회지 Vol.22 No.3

This experiment was conducted to compare the utilizability of calcium and phosphorus in locally produced various sources of calcium-phosphorus supplements for egg type growing chicks from 0 week to 19 weeks of age. A total of 320 White Leghorn chickens of Hisex strain were divided into 5 treatments consited of Tricalcium phosphate₁ (TCP₁), Tricalcium phosphare ₂(TCP₂), Dicalcium phosphate (DCP), Bone ash and Control group. The results obtained are summarized as follows. 1. The calcium, phosphorus and fluorine contents of TCP₁, TCP₂, DCP and bone ash used in-this experiment were analyzed to be 29.98%, 15.72 % and 0.14% ; 26.64%, 13.51% and 0.09% ; 26.62%, 13.51% and 0.3p% 36.33%, 15.23% and 0.10%, respectively. 2. Body weight gain, feed intake and feed efficiency were not influenced by the sources of calcium and phosphorus during the growing period of 19 weeks. However, it was found that body weight gain, feed intake and feed efficiency were significantly (p $lt;0.05) lower for control group than other groups during the starting period of 0 to 6 weeks. There were no differences in the body weight gain, feed intake and feed efficiency during the growing period of 6 to 19 weeks among treatments. 3. No difference in nutrients utilizability during the growing period of 0 to 19 weeks was observed among treatments. It was found that the rate of nitrogen retention was somewhat decreased gradually toward the maturity of chicks progressed.

볏짚 가공사료의 개발을 위한 연구 2 . 면양에 대한 볏짚 가공사료의 사료섭취량 , 소화율 및 VFA 조성에 미치는 영향

한인규,최윤재,류연선,김창원,배동호,맹원재,오대균 ( I . K . Han,Y . J . Choi,Y . S . Ryu,C . W . Kim,D . H . Bae,W . J . Maeng,D . K . Ohh ) 한국축산학회 1983 한국축산학회지 Vol.25 No.3

This experiment was conducted to examine feed intake, digestibility and volatile fatty acid (V FA) composition of ruminal juice of NaOH treated rice straw or NaOH treated rice straw pellet through digestibility experiment and the determination of ruminal pH and volatile fatty acid pattern for lamb. Tweleve male lambs weighing 45 ㎏ on average body weight were divided into 4 treatments i.e. control group (raw rice straw chopped in 5 ㎝), 1% NaOH treated group, 3.5% NaOH treated pellet A group (1.7-1.8 ㎝ in diameter and 4.5㎝ in length) and 3.5% NaOH treated pellet B group (2.4 ㎝-2.5 ㎝ in diameter and 3-4 ㎝ in length). Among 12 lambs, 8 lambs were used for digestion trial and 4 fistulated lambs were used for measuring the VFA pattern and changes in pH of rumen juice. The results obtained were summarized as follows. 1. The daily rice straw feed intake of lambs fed rice straw pellet B (806 g/day) and rice straw pellet A (767 g/day) was higher than that of NaOH treated rice straw (679 g/day) or control group (396 g/day). 2. Digestibilities of dry matter, C. Protein, C. fiber and NFE in rice straw pellet B were the highest and that of untreated straw was lowest. Digestibilities of crude fiber and NFE in rice straw pellet A were higher than those of NaOH treated rice straw. However, the opposite trend were shown in those of dry matter, crude fat and crude protein. The contents of DCP and TDN of rice straw pellet B (1.42%, 51.39%) were highest and those of untreated straw (0.39%, 41.58%) were the lowest. 3. The total VFA production of rumen juice was the highest in NaOH treated rice straw pellet A group (101.93 m M/l) and was the lowest in control group (88.39 m M/l). In change of VFA. production, NaOH treated rice straw pellet A and B groups showed the peak at one hour after feeding and was half hour in NaOH treated rice straw. But control group was decreased for one hour. No significant difference was found in pH change of rumen juice collected. According to the present results, NaOH treated with or without palleting the rice straw is considered to be an improved source roughage for the ruminant animals.