CAJ | 학술논문

本试验选择16头处于干奶期的健康荷斯坦奶牛，各试验牛体重、年龄、胎次相近，随机分成4组，每组4头。试验分为两期，一期饲喂基础日粮，二期以苜蓿、羊草、全株玉米青贮和干玉米秸秆各粗饲料替代30％基础日粮。考察不同粗饲料对奶牛能量代谢的影响。试验结果表明苜蓿的饲草相对饲用价值（RFV）值最高，一定程度上说明了苜蓿的营养价值最高，玉米青贮较玉米秸秆饲草相对饲用价值（RFV）值高，说明青贮改善了玉米秸秆的品质，提高其营养价值。
본시험선택16두처우간내기적건강하사탄내우，각시험우체중、년령、태차상근，수궤분성4조，매조4두。시험분위량기，일기사위기출일량，이기이목숙、양초、전주옥미청저화간옥미갈간각조사료체대30％기출일량。고찰불동조사료대내우능량대사적영향。시험결과표명목숙적사초상대사용개치（RFV）치최고，일정정도상설명료목숙적영양개치최고，옥미청저교옥미갈간사초상대사용개치（RFV）치고，설명청저개선료옥미갈간적품질，제고기영양개치。
The test choiced sixteen healthy holstein cow in dry milk. The test cow had randomly divided into four groups on weight, age and closey parity .One test had four cow. The test is divided into two phase that the first phase had feed basal diet and the second phase had feed roughage, such as chinensis, alfalfa, corn silage and dry corn straw ,replacing 30% of base of diet for inspecting the influence of energy metabolism on cow in different roughage. The test results showed that alfalfa had the highest value（RFV） and the corn silage had higher value （RFV） than corn straw. It means silage had impoved the quality and nutritional value of Corn Straw.