본 연구에서는 국내에서 반추가축에게 주로 이용되는 조 사료원들의 영양소 함량 및 반추위 in situ 소실율을 평가 하기 위해서 수행하였다. 착유우 30두 이상의 50여개 농가 를 대상으로 조사한 결과를 토대로 선정한 12종류의 조사 료를 다양한 수입원을 고려하여 확보한 다음, 주요 영양소 성분과 미네랄을 분석하였다. 또한 그 중 5개의 조사료원 (티모시, 알팔파펠렛, 볏짚, 클라인글라스 및 톨페스큐)을 선정하여 반추위 cannula가 장착된 거세 한우 2두(평균체 중 526 ± 14 kg)를 이용하여 반추위 in-situ 소실율을 평가하 였다. 조사한 조사료원들의 영양소 함량은 한국표준사료성 분분석표에 비하여 전반적으로 낮은 함량을 나타내었다. 최종 반추위 in-situ 건물 소실율은 클라인글라스가 가장 높 게 나타났으며 티모시, 알팔파 펠렛, 톨 페스큐, 볏짚 순으 로 낮아졌다. 최종 조단백질 소실율은 알팔파 펠렛이 가장 높았으며 클라인 글라스, 티모시, 톨페스큐, 볏짚 순으로 높게 나타났다.

The quality including in situ degradability in the rumen of Holstein of the orchardgrass silage added with apple pomace was investigated in this study. The amount of apple pomace added in different treatments were 0, 20, 40 and 60% respectively. With high

The quality of the rice straw silage added with apple pomace was investigated in this study and the amount of apple pomace added in different treatments were 0, 20, 40 and 60%, respectively. Crude protein contents (6.4-7.5%) of rice straw silage added wit

The quality including in situ degradability in the rumen of Holstein of the black locust silage added with apple pomace was investigated in this study. The amount of apple pomace added in different treatments were 0, 20, 40 and 60% respectively. With higher amount of addition of apple pomace in black locust, crude protein content in the silage decreased. Crude protein contents in the apple pomace added silage were in the range between 11.7 and 13.7% and those were significantly lower than 16.3% of 100% black locust silage. The contents of ADF, NDF and crude ash were in the same trend as with crude protein, which were shown more clearly in the 40~60% addition of apple pomace. Moisture content of 100% black locust silage was 56.7% however it significantly increased according to higher levels of addition of apple pomace(67.1~73.8%). pH, lactic acid and total organic acid contents in 20~60% addition of apple pomace were 3.7~4.3, 1.3~2.2%, and 2.1~6.0% respectively, however in 100% black locust silage those were significantly lower except pH as 5.4, 0.6% and 1.0% respectively. In situ disappearance rates of dry matter and NDF in the rumen were significantly higher at the stages of incubation after 12h and 24h respectively in 20~40% addition of apple pomace than in 100% black locust silage. No statistical differences were observed with quickly degradable fraction (a) in the disappearance rates of dry matter and NDF. In dry matter, however slowly degradable fractions (b) of 100% black locust and 60% addition of apple pomace were significantly higher as 99.7 and 99.8% respectively than 37.7~50.5% of 20~40% addition of apple pomace. On the contrary, fractional rate of disappearance (c) and effective degradability(ED) were significantly higher in 20~40% addition of apple pomace as 0.0115~0.0149 and 30.4~31.9% respectively than the respective values of 0.0027 and 24.9% of 100% black locust. In NDF, b was significantly higher in apple pomace added silage(38.5~99.8%) than in 100% black locust silage(14.9%). However, C was significantly lower in apple pomace added silage than in 100% black locust silage.