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젖소 사육을 위한 조사료의 개발에 관한 연구 ( NH3 가스 처리에 의한 보리짚의 사료가치 개선에 관한 연구 )
이택원 ( Taek won Lee ) 한국축산학회 1981 한국축산학회지 Vol.23 No.4
This experiment was conducted to improve the feeding value of barley straw. Straw was tightly packed with. vinyl film and treated four levels of liquid anhydrous ammonia (1%, 3%, 5% and 7% by weight) and stored in the environmental temperatures (from 19 to 28℃) for 1 week, 2 week, 4 weeks and 8 weeks. The results obtained were summarized as follows: 1. Contents of crude protein was increased with increasing ammonia levels and treatment period, especially, treatment of 5% or more showed almost twice the amount of crude protein. 2. Neutral detergent fiber (NDF) decreased by 10% at 5% and 7% ammonia levels. A little decreases were also recognized in other treatments. The amount of acid detergent fiber (ADF) decreased about 2% only in 5% and 7% treatment. No differences were found in the lignin contents. 3. In vitro organic matter digestibility showed a general tendency of increase, especially, after 8 weeks, all treatments of 3-7% showed increases of more than 12%. 4. Palatability of liquid anhydrous ammonia treated barley straw was good to the dairy cattle. 5. Considering the above results, barley straw treated with 5% liquid anhydrous ammonia for 8 weeks might be considered as satisfactory roughage for dairy cattle.