动物营养学报2015，Vol.27Issue(9)：2977-2986,10.DOI:10.3969/j.issn.1006-267x.2015.09.039
甲酸、纤维素酶、乳酸菌剂对典型草原天然牧草青贮品质的影响
Effects of Formic Acid, Cellulose and Lactic Acid Bacteria on Silage Quality of Natural Forage of Typical Steppe
摘要
Abstract
This experiment was conducted to selected the suitable supplemental concentrations of formic acid ( FA) , cellulose ( CE) and lactic acid bacteria ( LAB) for natural grass silage, and to provide a scientific ba-sis for forage grass silage additives. A single factor completely randomized was uesd in the experimen, added FA (3.00, 6.00 and 9.00 mL/kg), CE (0.05, 0.10 and 0.15 g/kg) and LAB (0.01, 0.02 and 0.03 g/kg) of 3 different kinds of additives in natural grass forage, and the control group ( CK) was without any addition. Analyzed the sensory quality, fermentation quality, nutrient composition and in vitro digestibility of natural forge silage nder different additives. The results showed as follows:1) added 6.0 mL/kg FA group had been significantly improved the sensory quality, the pH, ammoniacal nitrogen/total nitrogen ( AN/TN) were signif-icantly lower than CK (P<0.05), the contents of dry matter (DM), crude protein (CP) and water soluble carbohydrates ( WSC) was significantly higher than those of CK ( P<0.05) , the contents of neutral detergent fibre ( NDF) and acid detergent fibre ( ADF) had no significant difference compared with CK ( P>0.05) , the in vitro digestibility of gross energy ( GE) and digestive energy ( DE) was significantly higher than CK ( P<0.05) , the in vitro dry matter digestibility ( IVDMD) had no significant difference compared with CK ( P>0.05). 2) The sensory quality of added 0.15 g/kg CE group had been significantly better than the control group, the pH, AN/TN were significantly lower than CK ( P<0.05) , the contents of DM, CP, ether extract ( EE) and WSC were significantly higher than CK ( P<0.05) , the contents of NDF and ADF were significant-ly lower than CK ( P<0.05) , the GE, DE and IVDMD were significantly higher than CK ( P<0.05) . 3) The sensory quality of added 0.02 g/kg LAB group had been significantly improved, the pH, AN/TN were signifi-cantly lower than CK ( P<0.05) , the lactic acid content was significantly higher than CK ( P<0.05) , the con-tents of DM, CP, EE were significantly higher than CK ( P<0.05) , the content of NDF and ADF was signifi-cantly lower than CK ( P<0.05) , the GE, DE and IVDMD were significantly higher than CK ( P<0.05) . Ac-cording to principal component analysis, added 6.0 mL/kg FA, 0.1g/kg CE or 0.02 g/kg LAB, the natural grass silage fermentation can guarantee good quality, and can effectively save the nutritional value of forage.关键词
天然牧草/青贮/甲酸/纤维素酶/乳酸菌剂Key words
natural grass forage/silage/formic acid/cellulose/lactic acid bacteria分类
农业科技引用本文复制引用
侯美玲,格根图,孙林,周天荣,张颖超,贾玉山..甲酸、纤维素酶、乳酸菌剂对典型草原天然牧草青贮品质的影响[J].动物营养学报,2015,27(9):2977-2986,10.基金项目
农业部公益性行业项目"饲草青贮工艺技术及配套设施装备的研究与示范"(201303061) （201303061）
国家现代牧草产业技术体系项目( CARS-35) （ CARS-35）
