한국 소 비육에 있어서 사료 급여방식이 비육효과에 미치는 영향

육종융,김진욱 ( Chong Yung Yuk,Jin Uk Kim ) 한국축산학회 1975 한국축산학회지 Vol.17 No.3

Six Korean yearling bulls were employed in two experiments to study the effect of feeding methods, i.e., feeding concentrates and Gutted native grass hay separately (control feeds) or mixed together (test feeds). The double-reversal design was used in this experiment. The results obtained were summarized as follow: 1. Amount of hay intake in test group was larger than that in control group. but the difference was not significant. 2. Body weight gains of the bulls fed control feeds were heavier than that of test feeds. The average daily gain was 1.21㎏ for control group and 1.03㎏ for test group, but the difference was not statistically significant. 3. During the two experimental periods, bulls of control group consumed less DCP and TDN for 1㎏ body weight gain than that of test group. 4. The height of hip cross and length of heart girth of control bulls were longer than that of test bulls. Withers height and body length of test bulls, however, were longer than that of control bulls.

가축분의 사료화를 위한 연구 7 . 부로일러 사료에 있어서 건조계분에 의한 강부류 및 박류 대치시험

육종융,한인규,이택원,정정수 ( Chong Y . Yuk,In K . Han,Tack W . Lee,Chung S . Chung ) 한국축산학회 1978 한국축산학회지 Vol.20 No.5

This experiment was conducted to determine the using level of dried poultry waste(DPW) in broiler rations, employing 360 broiler chicks of Shaver strain for 8 week. In this experiment, 0, 4, 8, 12% of wheat bran and 0, 3, 6, 9% of sesame oil meal were replaced by DPW. The results obtained are summarized as follows: 1. In the body weight gains of chicks, there were no statistical differences among treatments. Up to 12% wheat bran and 9 % sesame oil meal could be replaced by DPW with no adverse effect on the growth rate. 2. There were no statistical differences in feed consumption and feed efficiency among treatments. 3. No statistical differences were found in nutrients utilizability among treatments. 4. Utilizability of dry matter and total carbohydrate of DPW itself were low as 30.34% and 22.32%, respectively. It is concluded that less than 8 % of wheat bran or 6 % of sesame oil meal could be replaced by DPW in the rations of broiler-type chick.

볏짚의 사료적가치증진에 관한 연구;제1보 요소의 첨가수준이 생볏짚의 사료적가치에 미치는 영향

육종융 한국축산학회 1965 한국축산학회지 Vol.7 No.1

It is the most important problem to improve the utilizability of nutrients in the rice straw, since more than billion (1,000,000,000) ㎏. of it was consumed by ruminants as major feed every year. It was the purpose of this experiment to study possibility for the improving effects of supplying various level of urea to the rice straw on the utilizability of nutrients by native goats. The results obtained are summarized as follows: (1) Both groups of animals fed rice straw only and fed rice straw supplemented with urea could not make any gain of body weight, although urea supplemented group lost slightly less amount of body weight than did control group. The weight loss in June was much higher (P$lt;0.01) than that in winter. (2) No significant difference in the amount of feed intake was observed. However, there was a significant (P$lt;0.01) difference in the teed intake between summer and winter. (3) There was a significant increase in the amount of excreted urine for the urea supplemented groups, also a difference was observed between period of experiment and among individual of animals. (4) Supplementation of urea had no effect on the pH, bacterial count and the number of protozoa in the rumen. (5) The amount of urinary nitrogen was increased as the level of urea increased. All experimental animals were in negative nitrogen balance. (6) It was found that supplementation of urea improved only the digestibility of protein of rice straw, and did not improve those of the other nutrients and energy. (7) Digestible nutrients, TDN, and starch value of raw rice straw and urea verb computed.

볏짚의 사료적가치증진에 관한 연구;제4보 석회볏짚에 대한 요소 및 열량사료의 첨가가 그 이용성에 미치는 효과

육종융 한국축산학회 1965 한국축산학회지 Vol.7 No.1

This experiment was conducted, to study the effects of the addition of urea or/and crushed barley grain on the utilizability of the lime treated rice straw which is deficient in protein and energy with native male goats by the 4×4 Latin square design. The results obtained are summarized as follows: (1) The body weight of animals was slightly decreased in treatment 1 (lime rice straw alone fed), treatment 2 (lime rice straw supplemented with crashed barley grain) and treatment 3 (lime rice straw supplemented with urea.). However, animals in treatment 4 (lime rice straw a supplemented with crashed barley and urea) slightly increased the body weight by 0.96 ㎏ per animal during the experimental period. It was concluded that supplementation of 50 g. of crashed barley and 3 g. of urea per day per goat on lime rice straw could maintain the body weight. The palatability of lime rice straw was unproved by supplementation of crashed barley. The amount of excreted feces and urine was not affected by the addition of urea or/and crashed barley on the lime rice straw. (2) The number of bacteria and protozoa in the rumen juice were slightly higher for the animals fed lime rice straw supplemented with crashed barley and urea than for animals fed diets with T₁, T₂, and T₃, but the difference was not significant statistically. Although, there was highly significant (P$lt;0.01) differences in the bacterial count among experimental periods, there was no significant difference in protozoal count. It was observed that the number of bacteria and protozoa in the rumen greatly decreased during hot weather of the summer. (3) All experimental animals were in negative nitrogen balance. However, in true nitrogen balance was shown positive in all treatment except T₁. It was significantly (P$lt;0.05) different among treatments. The digestibility of feed energy and protein was significantly (P$lt;0.05 for feed energy, P$lt;0.01 for protein) improved by the supplementation of crashed barley and urea to lime rice straw. However, the digestibility of other nutrients in the diet was not difference significantly. (4) Digestible nutrients, total digestible nutrient, and starch value of lime rice straw, crushed barley and urea were computed.

유방을 닦는 물의 온도가 유우의 유량과 유질에 미치는 영향

육종융 한국축산학회 1965 한국축산학회지 Vol.7 No.1

This experiment was conducted to study the effect of the temperature of water that has been used to clean udder before milking on the amount of total output, butter fat, solid-not-fat, density, and pH of milk, in order to study the seasonal effect, the experiment was carried out during three different season of year, i.e., Spring, Summer, early Winter. Three different levels of temperature of water employed during first period (spring) were 30, 35, 40℃; and those of second period (Summer) were 15, 30, and 40℃; and those of third period (early Winter) were 10, 22, and 30℃, respectively. Three milking Holstein Cows were used under the design of 3×3 Latin square for this experiment. The results obtained are summarized as follows: (1) A significant difference (P$lt;0.05) on the total output of milk was observed only for the first period of this experimentation. No difference in seasonal effect was detected. (2) Although a significant difference in the milk fat output, production of solid-not-fat, density, and pH of milk was obtained among individual, but not obtained between treatment. However, the amount of milk fag and density was higher for the milk produced during Winter than those produced during Spring and Summer. (3) The present results agree with those published in the past. Further study may be needed to deny the favorable effect of warm water that has been used to clean the udder before milking on the production of milk. It is suggested by the present data that cleaning udder for udder tumour after parturition with warm v. seer of temperature of 30∼40℃ would help the secretion of milk from udder.

산양에 대한 볏짚의 사료적가치증진에 관한 연구

육종융 한국축산학회 1966 한국축산학회지 Vol.8 No.1

사료문제 해결을 위한 제언

육종융 한국축산학회 1968 한국축산학회지 Vol.10 No.1

가축분의 사료화를 위한 연구 8 . 한우에 대한 건조계분의 사료가치시험

육종융,유문일,정천용,한인규 ( Chong Y . Yuk,Moon I . Yoo,Chun Y . Chung,In K . Han ) 한국축산학회 1978 한국축산학회지 Vol.20 No.5

This experiment was conducted to determine the substitution level of dried hens manure (DPM) for wheat bran in fattening ration for Korean native steer. Twenty yearling steers, weighing on average of 245 ㎏ were randomly alloted to four treatment groups according to the level of DHM. Treatments consisted of four rations constraining 0, 10, and 20% DHM substituted for wheat bran and 30% DHM substitute for wheat bran (20%), corn (6%) and soybean oil meal (4%). The results obtained are summarized as follows : 1. Average daily gains of DHM 0, 10, 20 and 30% fed groups were 0.95, 0.90, 0.89 and 0.88 ㎏, respectively. There was no significant difference among treatments. Data revealed that the average daily gain decreased slightly as the level of DHM substituted increased. Dressing percentage was not affected by the different level of DHM feeding. 2. Dry matter intakes of DHM 1, 10, 20 and 30% groups were 7.15, 7.21, 7.41, and 7.63, respectively. Daily dry matter intake increased as the substituted level of DHM in ration increased. 3. When DHM cost was considered, to be zero won per ㎏ feed cost required per ㎏ of body weight gain was decreased as the level of DHM in ration increase. When DHM cost was estimated to be 30 won per ㎏, feed cost required per ㎏ of weight gain was similar for DHM 0 and 30%, and slightly higher for DHM 10 and 20% groups than for DHM 0 and 30% groups Based upon the dats concerning body weight gain and economic analysis, it is concluded that inclusion of DHM may be practiced upto 30% in fattening ration for Korean native steer and the price of DHM per ㎏ should be less than 30 won in any case.

유축농업적 축산의 진흥

육종융,Yuk, Jong-Yung 한국과학기술단체총연합회 1978 과학과 기술 Vol.11 No.3

가축분의 사료화를 위한 연구 10. 가축분의 가소화성분 측정에 관한 연구

육종융,한인규,정정수,유문일,이규호,정인걸,하종규,이탁원 ( Chong Y . Yuk,In k Han,Chung S . Chung,Moon I . Yoo,Ku H . Chung,In K . Chung,Jong K . Ha,Tack W . Lee ) 한국축산학회 1978 한국축산학회지 Vol.20 No.5