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저질산야초의 (低質山野草) 사료가치 증진시험 Ⅰ. 재료의 수분함량과 암모니아 첨가수준이 일반성분 및 건물소화율에 미치는 영향
홍병주(Byung Ju Hong),고용균(Yong Gyun Goh),이영철(Yong Chull Rhee) 한국축산학회 1984 한국축산학회지 Vol.26 No.3
This study was conducted to evaluate the nutritive value of wild grass treated with ammonia and to determine the effects of ammonia application rate, grass moisture content, treatment duration and ammoniation source on the chemical composition and fiber digestibility. The results obtained were summarized as follows: 1. The concentration of total nitrogen of wild grass treated with ammonia was increased with increasing the NH₃ application rate and moisture content of wild grass (P$lt;0.01). But, the nitrogen of urea-treated grass was not affected by the moisture content proportionately. 2. The NDF and ADF content of wild grass treated NH₃ and urea were not affected by the moisture content and application rate 3. Although the urea-treated grass was not higher in the in vitro dry matter digestibility (IVDMD) than untreated. But, the ammoniation grass significantly improved the IVDMD at the level of 3.0% especially. Also, significant increases were obtained at the level of 5,7% (P $lt; 0.01). 4. In vitro dry matter digestibility (IVDMD) was greatly affected by the treatment duration. More than 3 weeks in treatment duration showed significantly (P$lt;0.01) higher in vitro dry matter digestibility (IVDMD) compared to one week duration. And no significant difference among more than 3 weeks duration were observed. 5. The 30% moisture content in NH₃ grass showed highest IVDMD.
저질산야초의 (低質山野草) 사료가치 증진시험 Ⅱ. 암모니아처리 산야초가 산양의 성장율과 경제성에 미치는 영향
홍병주(Byung Ju Hong),고용균(Yong Gyun Goh),이영철(Yong Chull Rhee) 한국축산학회 1984 한국축산학회지 Vol.26 No.3
A performance and digestibility trials were conducted to evaluate the feeding value of ammoniated (3% dry basis), urea treated (2% dry basis) and untreated wild grass by goats. The results obtained were summarized as follows: 1. Total digestible nutrients value of wild grass which were treated by NH₃, urea and untreated were 56.8% 46.5% and 47.1% respectively (P$lt;0.01). 2. NHS treated wild grass (3% dry basis) had a higher dry matter digestibility (55.6%) and higher NDF digestibility (62.4%) than all the other treatments. 3. Daily body gain and dry matter intake of goats fed NH₃ treated grass were greater than either fed untreated and urea-treated grass. That is, daily body gain and dry matter (DM) intake were 112g and 0.71㎏, those of urea-treated were 88g and 0.52㎏, and those of untreated were 82g and 0.47㎏, respectively. 4. Cost of the grass used in this trial based on the manufacturing price: Untreated grass - 85₩ per ㎏; Ureatreated grass - 91₩ per ㎏; NH₃ treated grass - 103₩ per ㎏. However, when the NH₃ treated grass was fed by the goats, the feed cost per kilogram gain was the cheapest of all the other treatments.