CAJ | 학술논문

采用正交设计,将初花期收获的紫花苜蓿经过0、4、8h的晾晒处理,添加不同水平的乳酸菌和蔗糖进行青贮.结果表明:水分含量对青贮苜蓿pH值和氨态氮/总氮(AN/TN)值无明显影响;晾晒4h和8h (水分含量分别为72.54%和68.63%)时,苜蓿乳酸(LA)含量较不晾晒(水分含量为80.82%)直接青贮显著增加(P<0.05);晾晒4h和8h后青贮苜蓿的粗蛋白(CP)和干物质(DM)含量均显著高于晾晒0h的?(P<0.05),中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)含量则显著低于0h的(P<0.05);乳酸菌添加量为107cfu/g的青贮苜蓿pH值最低,AN/TN、NDF、ADF均显著低于其他两个添加水平(P<0.05),而乳酸含量、DM和CP则显著高于其他两个添加水平(P<0.05);?蔗糖添加浓度对青贮苜蓿氨AN/TN和DM影响不显著(P>0.05).糖添加浓度为20g/kg的青贮苜蓿LA含量最高,pH值最低,NDF和ADF最低,均显著低于蔗糖浓度为0?g/kg的(P<0.05).综合上述结果,苜蓿收获后晾晒4~8h,待水分降到70%左右时,添加107cfu/g的乳酸菌和20g/kg的蔗糖青贮效果最好.
채용정교설계,장초화기수획적자화목숙경과0、4、8h적량쇄처리,첨가불동수평적유산균화자당진행청저.결과표명:수분함량대청저목숙pH치화안태담/총담(AN/TN)치무명현영향;량쇄4h화8h (수분함량분별위72.54%화68.63%)시,목숙유산(LA)함량교불량쇄(수분함량위80.82%)직접청저현저증가(P<0.05);량쇄4h화8h후청저목숙적조단백(CP)화간물질(DM)함량균현저고우량쇄0h적?(P<0.05),중성세조섬유(NDF)화산성세조섬유(ADF)함량칙현저저우0h적(P<0.05);유산균첨가량위107cfu/g적청저목숙pH치최저,AN/TN、NDF、ADF균현저저우기타량개첨가수평(P<0.05),이유산함량、DM화CP칙현저고우기타량개첨가수평(P<0.05);?자당첨가농도대청저목숙안AN/TN화DM영향불현저(P>0.05).당첨가농도위20g/kg적청저목숙LA함량최고,pH치최저,NDF화ADF최저,균현저저우자당농도위0?g/kg적(P<0.05).종합상술결과,목숙수획후량쇄4~8h,대수분강도70%좌우시,첨가107cfu/g적유산균화20g/kg적자당청저효과최호.
Alfalfa was harvested at early lfowering stage. After 0, 4 and 8 h of exposure to the sun, the water content of alfalfa, lactic acid bacteria and sugar were arranged in an Orthogonal Design to evaluate the effect of these 3 factors on alfalfa silage quality. The results showed that after 4 and 8 h of exposure to the sun, the water content of alfalfal was decreased from 80.82% to 72.54% and 68.63%, respectively. The value of pH and Ammonia-N/TN of the alfalfa silage was not significantly affected by the water content (P>0.05). In the treatments of water content of 72.54% and 68.63%, lactic acid (LA) content of alfalfa silage was signiifcantly higher than the treatment of water content of 80.82%(P<0.05). In addition, crude protein (CP) and dry matter (DM) of alfalaf silage of the treatments of water content of 72.54% and 68.63% were signiifcantly increased than the treatment of water content of 80.82% (P<0.05), but NDF and ADF were signiifcantly decreased (P<0.05). At addition level of 107cfu/g of lactic acid bacteria, alfalfa silage had the highest DM, CP and LA content, but the lowest NDF, ADF and AN/TN, which all showed signiifcant differences with the treatments of lactic acid bacteria addition level of 105 and 106cfu/g (P<0.05). At the sucrose addition of 20g/kg, alfalfa silage had the highest LA content, and had lowest pH value, NDF and ADF content, that all showed signiifcant differences with the treatment of 0g/kg of sucrose addition level (P<0.05). These results indicated that alfalfa at the water content of 68.63%, added 107cfu/g lactic acid bacteria and 20g/kg sucrose had the best silage quality.