사료내 전해질 공급제의 종류가 이유자돈의 성장 , 뇨성상 및 영양소 이용율에 미치는 영향

박재환(J . H . Park),한인규(I . K . Han) 한국영양사료학회 1994 韓國營養飼料學會誌 Vol.18 No.3

조기이유자돈 사료내 볶은 대두박의 수준이 자돈의 성장에 미치는 영향

문홍길,김지훈,조원탁,신인수,한인규 ( H . K . Moon,J . H . Kim,W . T . Cho,I . S . Shin,In K . Han ) 한국영양사료학회 1998 韓國營養飼料學會誌 Vol.22 No.3

당밀 - 요소 액상사료의 급여가 우유생산량 및 우유의 화학성분에 미치는 영향

한인규,하종규,이봉덕,김영길,이인형 ( I . K . Han,J . K . Ha,B . D . Lee,Y . K . Kim,I . H . Lee ) 한국축산학회 1975 한국축산학회지 Vol.17 No.1

To study the effects of molasses-urea liquid mixture supplementation on the milk yields, milk composition and feed utilization of lactating dairy cows, a series of two experiments was conducted during winter season of hay feeding period (Experiment I) and during summer season of green grass feeding period(Experiment II). Results obtained are summarized as follows: 1. Feeding molasses urea mixture in liquid form replacing 20% of concentrates resulted no changes in the production of milk, chemical composition of milk, feed intake and feed efficiency for milk production when this was fed either in the form of mixture with concentrates or in the form of liquid. 2. Present data revealed that 5.23 won of cash during hay feeding period and 4.34 won of cash during green grass feeding period could be saved by feeding 20% molasses urea mixtures instead of the same amount of concentrates. 3. No adverse effects or ammonium toxicity were detected by feeding urea upto 170 g daily when this was fed three times a day. It may be concluded from the above results that molasses urea mixture can be used to lactating dairy cows without any harmful effect.

환원유를 혼입한 생유의 검출방법에 관한 연구

한인규 ( I K Han ),김현욱 ( H U Kim ),육종융 ( C Y Yuk ),허환녕 ( H Y Huh ) 한국축산학회 1968 한국축산학회지 Vol.10 No.1

This experiment was conducted to develope a method of detection for adulteration of raw milk with spray-dried milk powder. Five ㎖. of milk to be tested was treated with 4 ㎖. of 15% ammonium moybdate solution (w/v). After being shaken, the tube was heated at 77.50℃ for 90 minutes. In order to estimate the intensity of color, the methods involved diluting the 3 ㎖. of the sample treated above to 15 ㎖. with distilled H₂O, precipitating with 10% TCA solution and filtering. The degree of blue color developed upon heating was measured by the coleman spectrophotometer at 490 mμ and hemoglobinometer. An attempt was made to explain the mechanism for which the blue color was developed. The results obtained are summarized as follows; I. Raw milk resulted a light color, whereas the milk which has been reconstituted with spray-dried milk powder gave a deep blue color. There was a highly positive correlation (r=0.94) between the amount of spray-dried milk added in raw milk and intensity of blue color developed. Results revealed that this method could be used to detect 4% of addition of reconstituted milk with spray-dried milk powder. 3. It was also found that there was a positive correlation (r=0.97) between adulteration and Hb-meter reading. Eight percentage or more of adding reconstituted milk could bed erected by Hb-meter reading. 3. It was also found a straight linear relationship (r=0.95) between intensity of blue color and reducing capacity of milk. The reducing capacity of spray-dried milk was much higher than that of raw milk. 4. The cause of developing blue color described in this method could be resulted from the occurrence of inorganic phosphate and reducing capacity of the milk and the difference in blue color was due to the difference in reducing capacity between raw and reconstituted milk.

Salinomycin 의 육성돈에 대한 성장촉진효과

한인규,박재환,이상철,유문일,최관 ( I . K . Han,J . H . Park,S . C . Lee,M . I . Yoo,K . Kwon ) 한국축산학회 1982 한국축산학회지 Vol.24 No.4

The experiment was conducted to investigate the growth promoting effect of salinomycin for growing-finishing swine. In this experiment 192 hogs of Large White x Landrace x Duroc or Hampshire three way crossed weighing an average of 24 ㎏ in body weight were used in three treatments of Control Salinomycin 25 ppm and Colistin 10 ppm for a period of 14 weeks. The results obtained are as follows: 1. The average daily gain of Salinomycin fed group was considerably (p$lt;0.05) better than that of nonmedicated group (control). However, there was no statistical difference between Salinomycin and Colistin fed group. 2. It was also found that feed intake was much less (p$lt;0.05) for Salinomycin fed group than for control group. 3. Feed efficiency of Salinomycin fed group was highly significantly (p$lt;0.01) better than that of control group. However, no significant difference was found between Salinomycin and Colistin fed group. 4. It seemed that Salinomycin fed group utilized more efficiently the dry matter, crude protein. Crude fat, and total carbohydrate, although no statistical differences were found among treatments. 5. In general, carcass quality was not affected by the addition of Salinomycin.

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.

볏짚 가공사료의 개발을 위한 연구 1 . 육성우와 착유우 ( 搾乳牛 ) 에 대한 볏짚가공사료의 사료적 가치에 관한 연구

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

This experiment was conducted to estimate the effects of NaOH treatment with or without pelleting the rice straw for Holstein heifers and lactating cows through feeding trials for 105 days. For two feeding trials, 20 heifers weighting approximately 283 ㎏ and 20 lactating cows producing 20.5 ㎏ of milk and weighing 539 ㎏ on the average were divided 4 groups 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 3.5 ㎝ in length). The results obtained were summarized as follows. 1. In heifer, the average daily gain (ADG), the average daily rice straw intake (ADRSI), and the total daily feed intake (TDFI), respectively, for the various groups were as follows (1) 0.46, 0.89, 6.05 ㎏ (2) 0.49, 1.01, 6.20 ㎏, (3) 0.64, 1.84, 7.19 ㎏, (4) 0.56, 1.84, 7.10 ㎏. Significant differences were noted in ADG or TDFI (p$lt;0.05) and ADRSI (p$lt;0.01). 2. In lactating cow, for the respective treatments, milk production amounted to 14.67, 16.29, 16.52 and 17.84 ㎏; fat content in milk was 3.93, 3.72, 4.09 and 3.68%. However, no statistical differences were shown among groups. Total daily feed intake and the daily rice straw intake were the same tendency to milk production.

CANNULA 설치 돼지에서 원료 사료의 아미노산 소화율 측정 연구

김인배(I . B . Kim),한인규(I . K . Han),최윤재(Y . J . Choi) 한국영양사료학회 1993 韓國營養飼料學會誌 Vol.17 No.2

이유자돈 및 육성비육돈사료에 있어서 L - lysine 의 첨가에 의한 단백질 절약효과

한인규,권관,나기현,유문일 ( In K . Han,K . Kwon,Ki H . Ra,Moon I . Yoo ) 한국축산학회 1978 한국축산학회지 Vol.20 No.6

In order to study the protein sparing effect of l-lysine from weanling pig to market weight, a series of feeding and metabolism trials was conducted. In experiment 1, a total of 192 three way crossbred pigs (Landrace x Large White x Duroc) weighing app. 10 ㎏ initially were used for four weeks to determine the effect of supplemental lysine when added to a low protein diets. In experiment 2, a total of 120 three way crossbred pigs were used for 11 weeks from 28 ㎏ to 90 ㎏. The results obtained are as follows: (1) It was found that the dietary protein level of 18% fed during period of 10 to 23㎏ was adequate for the daily gain and feed efficiency. Pigs fed the dietary protein level of 20% were not different in rate of gain and teed efficiency with pigs fed the dietary protein level of 18%. When pig were fed the dietary protein level of 16% + 0.2% l-lysine, rate of gain was similar to pigs fed the dietary protein level of 18%, but feed efficiency was slightly improved, In economic analysis, feed cost required per ㎏. of body weight gain was less for pigs fed the dietary protein level of 16% + 0.2% l-lysine than other levels. Therefore, it was apparent that weanling pig diets supplemented with 0.2% l-lysine was able to spare 2% of dietary protein. (2) The dietary protein level of 16% was adequate for growing pigs from 28 to 53 ㎏. Rate of gain and feed efficiency of pigs fed the dietary protein level of 14% + 0.2% l-lysine was similar to pigs fed dietary protein level of 16%.There were no difference in digestibility and nitrogen retention of diets supplemented with 0.2% l-lysine with other dietary protein level. Therefore, diets supplemented with 0.2% l-lysine could spare 2% of dietary protein for the growers. (3) The dietary protein level of 14% was adequate for finishing pigs from 53 to 90 ㎏. In the rate of gain, pig fed the dietary protein level of 12% supplemented with 0.2% l-lysine was slightly higher, but improved effect in rate of gain during finishing period was somewhat lower than growing period. However, improvement in feed efficiency during finishing period for l-lysine fed group was more remarkable than in rate of gain. Digestibility and nitrogen retention of diets by adding 0.2% l-lysine were not affected. (4) Although there was no significant difference, dressing percentage and back fat thickness was slightly increased, and loin aye area was slightly decreased when pigs were fed dietary protein level of 14% supplemented with 0.2% l-lysine from 28 to 53 ㎏ and 12% supplemented with 0.2% l-lysine from 53 to 90 ㎏. (5) In economic analysis feed cost required per ㎏ of body weight gain for pig fed the dietary protein level of 14-12% supplemented with 0.2% l-lysine was less than that for those fed the other dietary proten levels. Based on the above mentioned results, it may be concluded that adequate level of dietary protein for weanling-growing-finishing pig would be 18-16-14%. It would also be clear that supplementation of l-lysine at 0.2% level in the pig rations from weanling to market weight might be able to spare 2% of dietary protein.

가금에 대한 인의 적정공급수준 결정을 위한 연구 3 . 인의 공급수준이 산란계의 능력에 미치는 영향

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

This 24-week experiment with a total of 200 White Leghorn laying hens of 21-week old which were fed diets containing 0.43, 0.53, 0.62, 0.72 and 0.81% total phosphorus respectively was conducted to determine the optimum dietary level of phosphorus. The results obtained are summarized as follows 1. No difference was found in the egg production rate, average egg weight, feed consumption, Feed efficiency and rate of shelless egg laid among 5 treatments. 2. The egg shell thickness, and the contents of crude ash and calcium of egg shell were not significantly affected by the levels of phosphorus supplied. 3. The utilizability of crude protein (P $lt;0.05) and crude fat (P$lt;0.01) was significantly lower for hens fed 0.43% phosphorus and higher for hens fed 0.62% phosphorus. However, in the utilizability of dry matter and carbohydrate, the dietary levels of phosphorus had no apparent effects. 4. It was found that there were no differences in crude ash, calcium and phosphorus contents of tibia. among 5 experimental groups. 5. Hens in all the treatments gained body weight during the experimental period, although the gain in body weight was not significantly different. Mortality was not affected by any of the diets fed. Results obtained in this study indicate that supplement of 0.62% total phosphorus in laying diets was adequate for the performance of laying hens, although 0.43% level of total phosphorus did not exert any adverse effects.