干草防腐剂在不同规格苜蓿干草捆中的应用效果研究  

Effects of Hay Preservatives on Different Sizes of Alfalfa Hay Bales

作　　者：张勃 柯文灿 李福厚 郭旭生 ZHANG Bo;KE Wen-can;LI Fu-hou;GUO Xu-sheng(Animal husbandry and Veterinary Research Institute Dingxi,Dingxi,Gansu Province 743000,China;State Key Laboratory of Grassland and Agro-ecosystems,School of Life Science,Lanzhou University,Lanzhou,Gansu Province 730000,China)

机构地区：[1]甘肃定西市畜牧兽医科技研究院,甘肃定西743000 [2]兰州大学生命科学学院草地农业生态系统国家重点实验室,甘肃兰州730000

出　　处：《草地学报》2022年第6期1569-1575,共7页Acta Agrestia Sinica

基　　金：甘肃省草业技术创新联盟科技支撑项目“饲草防霉保鲜及青贮乳酸菌生物制剂的研发与应用推广(GCLM2016002)”资助。

摘　　要：为了研究干草防腐剂的防霉效果,本文在调制苜蓿小方捆时添加巴斯夫防腐剂BLP,并在苜蓿大方捆中比较使用了自行研发的防腐剂LZP和防腐剂BLP。结果表明:在苜蓿小方捆中,25%水分打捆时,添加防腐剂BLP显著抑制了苜蓿草捆中霉菌的生长,但对营养品质没有显著影响;30%水分打捆时,防腐剂BLP显著降低了苜蓿干草中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)的含量,当添加量为6 L·t^(-1)时,防腐剂BLP的防霉效果较为显著且增加了粗蛋白(CP)的含量。在苜蓿大方捆中,16%~19%水分打捆添加防腐剂BLP和LZP均能很好抑制霉菌的生长;而22%~25%水分打捆时时,两种防腐剂的对霉菌的抑制效果较差。上述结果表明调制苜蓿干草小方捆时添加6 L·t^(-1)防腐剂BLP能有效抑制霉菌的生长;自行研发的防腐剂LZP与BLP的防霉效果类似,具有一定的应用前景,但仍需进一步证明。In order to explore the effects of preservatives,this study evaluated the effect of BASF hay preservative(BLP)on small alfalfa hay bales and compared its anti-mildew effects with homemade preservative LZP on large alfalfa bales.The results showed that adding of 4 L·t^(-1) and 6 L·t^(-1)of^(p) reservative BLP exhibited good performance on 25%water content of small alfalfa bales but had no effects on the nutritional quality;preservative BLP decreased the contents of neutral detergent fiber(NDF)and acid detergent fiber(ADF)in 30%water content of treated hay.When the application rate is 6 L·t^(-1),anti-mildew effects was better and crude protein(CP)increased.For large alfalfa bales,both preservatives LZP and BLP inhibited the growth of molds at 16%~19%water content of alfalfa hay,but had no effect at 22%~25%water content.It indicated that adding 6 L·t^(-1) preservative BLP could effectively inhibit the growth of molds in small alfalfa bales;homemade preservative LZP had similar ability on inhibiting the growth of molds as preservative BLP and the prospect of application in practice,but further studies should be conducted.

关 键 词：苜蓿干草 防腐剂 霉菌 营养品质 

分 类 号：S54[农业科学—作物学]