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볏짚 - 계분 발효사료의 급여가 반추가축의 비육효과 , 영양소의 이용율 , 제1위내 성상 및 Protozoa 분포에 미치는 영향
윤칠석,이남형,김춘수 ( Chil Surk Yoon,Nam Hyung Lee,Chun Su Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.10
Fifteen Korean native cattle, averaging 128㎏ of initial body weight, were utilized to evaluate the effects of SMS on growing performance and digestibility of nufrients, protozoal population in the rumen and some mineral balance in sheep. The concentrates were given the amount of 1% of body weight and each roughage (SMS, rice straw, rice straw-pellet) of 2%o of body weight. NaCl and water were available at all times. After 48weeks of experimental peroid, the final body weight of SMS group was significantly higher compared with the other roughage groups (P $lt; .05). Daily weight gain of SMS, rice straw and pellet group was 0.90, 0.69, and 0.81㎏, respectively. In sheep experiment, the nutrient utilization for SMS tended to increase mostly, while the crude protein digestibility for the pellet group was significantly decreased. The rumen pH value for SMS group tended to be slightly lower compared to the other groups, and the concentration of individual VFAs was higher at the SMS group. Especially, the butyric acid for SMS was doubled in value than that of other roughage. Total protozoal count in the rumen fluid was higher at SMS group, followed by straw and pellet group (P $lt; .01). And Entodiniomorphs was predominated species, especially Entodinium. SMS But Holotrichs in me or straw was more frequently observed. Absorption% of intake of Mg, Na, K for the SMS were 48.18, 64.37, and 61.83, and these of the other groups were lower. As compared to the high intake of Na for pellet group, the retained amount was fairly low as were the other minerals. Nitrogen retention for pellet group was lower than that of the other groups (P $lt; .01).
암모니아처리 볏짚급여시 , 사료섭취량 , 영양적 가치 및 제1위내 성상에 미치는 영향
윤칠석,최의성,오태광 이남형,김창원,김춘수 ( Chil Surk Yoon,Eui Sung Choi,Tae Kwang Oh,Nam Hyung Lee,Chang Won Kim,Chun Su Kim ) 한국축산학회 1983 한국축산학회지 Vol.25 No.6
This experiment was conducted to determine the effect of ammonia treated rice straw on nutritive value and rumen characteristics. Rice straw was treated with aqueous NH₄OH to supply 40g NH₃ Kg^(-1) straw dry matter. The reaction time with ammonia was 6 weeks at room temperature. The results are as follows: Crude protein content increased more than 2 times by treatment, and the NDF content was decreased about 4.7%. The effect of ammoniation was the important factor in enhancing IVDMD. Ammoniation resulted in the significant improvements in intake, digestbility and nutritional quality. Improvements in nitrogen and sulfur retention was significant with treated straw. Also, Molar proportions of acetate increased (P$lt;.01) and butyrate decreased (P$lt;.01) with ammoniation. In conclusion, ammoniation is a simple and effective method of improving the feeding value of rice straw.
볏짚 - 계분 싸일레지와 대맥을 급여한 면양의 제 1 위내에서의 미생물 단백질 합성 효율
이남형(Nam Hyung Lee),윤칠석(Chil Surk Yoon),김춘수(Chun Su Kim) 한국축산학회 1988 한국축산학회지 Vol.30 No.8
Three sheep fitted with rumen cannulae and abomasal cannulae were given daily 750g (DM) of three diets consisting of straw-manure silage and barley mixture in the ratios of 75:25, 50:50 and 25:75. As the proportion of barley in the diet increased, there was an increase in the amount of OM apparently digested in the rumen and whole tract (p$lt;.01). But ADF digestion was decreased. For the 25:75 diet the NH₃-N content in the rumen showed the highest value, but the total VFA was the lowest. The rumen volume and dilution rate increased with increasing ratio of silage in diets. There were no significant differences between diets in abomasal NAN flow, and the bacterial-N for the 25:75 diet was 7.3g-N as compared with 9.2-9.6g-N for the other diets (p$lt;.01). Rates of bacterial nitrogen synthesis in the rumen were 30.5, 24.1 and 14.98 per Kg OM apparently digested in the rumen for the 75:25, 50:50 and 25:75 diets, respectively.