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볏짚 - 계분 발효사료 급여시 비유효과에 미치는 영향 및 발효사료의 안전성에 관한 연구
윤칠석,박전홍,오태광,이남형,김춘수,지설하,오대균,김준식 ( C . S . Yoon,J . H . Park,T . K . Oh,N . H . Lee,Chu S . Kim,S . H . Chee,D . K . Ohh,J . S . Kim ) 한국축산학회 1985 한국축산학회지 Vol.27 No.8
This experiment was carried out to evaluate the effects of feeding straw-manure silage compared with corn silage, and were consisted of trial I by Holstein cows and trial II by sheep with change-over feeding. And trial II was used to evaluate the digestibility and ruminal characteristics. The ratio of formula feed to each silage during experimental period was maintained at 40: 60 (w/w) as DM basis. Data from trial I on corn and straw-manure silage group, respectively, were; daily milk yield 17.23, 17.05㎏; milk fat 4.06, 4.19%; milk protein 3.89, 3.92%; milk lactose 5.27, 5.17%; SNF 10.36, 10.38%. These values were not significantly different between treatments. The digestibility of ration components on trial II showed that the digestibility of proximate composition of corn silage group tended to be slightly increased. But the fibrous matetial digestibility of straw-manure silage showed more increased results (p$lt;.05). Ruminal parameters on pH and VFA concentration were similar with two silage group. However, straw-manure silage resulted in stepwise increase in propionate and valerate throughout the sampling time. Blood parameters and parasites were observed to elucidate the possible harzardness of straw-manure silage feeding in dairy cattle. No difference was observed in PCV, Hb, plasma prote in, and BUN. Cholesterol and ALT were appeared slightly high value in straw-manure silage feeding group, however, plasma glucose was neverse. Nematodes survived up to 40 fermentaton days, and mites up to 30 days. Protozoa died within 10 fermentation days.
암모니아처리 볏짚급여시 , 사료섭취량 , 영양적 가치 및 제1위내 성상에 미치는 영향
윤칠석,최의성,오태광 이남형,김창원,김춘수 ( Chil Surk Yoon,Eui Sung Choi,Tae Kwang Oh,Nam Hyung Lee,Chang Won Kim,Chun Su Kim ) 한국축산학회 1983 한국축산학회지 Vol.25 No.6
This experiment was conducted to determine the effect of ammonia treated rice straw on nutritive value and rumen characteristics. Rice straw was treated with aqueous NH₄OH to supply 40g NH₃ Kg^(-1) straw dry matter. The reaction time with ammonia was 6 weeks at room temperature. The results are as follows: Crude protein content increased more than 2 times by treatment, and the NDF content was decreased about 4.7%. The effect of ammoniation was the important factor in enhancing IVDMD. Ammoniation resulted in the significant improvements in intake, digestbility and nutritional quality. Improvements in nitrogen and sulfur retention was significant with treated straw. Also, Molar proportions of acetate increased (P$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.