摘要
试验研究氨基酸副产物(ABP)对蔬菜废弃物混合饲料发酵品质及消化率的影响。原料的水分含量通过拌入麦秆调节。对照组无任何添加,试验1组添加2.5%ABP,试验2组添加2.5%ABP+1%尿素+2%氯化钠。发酵60d,测定相关指标。结果显示,试验组感官评分均有显著提高(P<0.05),均属于良好饲料和优质饲料区间。试验组pH值均显著低于对照组(P<0.05)。试验2组粗蛋白(CP)含量显著高于对照组(P<0.05)。试验组乙酸(AA)和乳酸(LA)含量均显著高于对照组(P<0.05),试验组丁酸(BA)含量低于对照组(P>0.05)。试验组干物质(DM)和酸性洗涤纤维(ADF)消化率显著高于对照组(P<0.05)。试验组中性洗涤纤维(NDP)消化率高于对照组,但差异不显著(P>0.05)。研究表明,蔬菜废弃物中可利用的碳源和氮源满足不了添加菌的需要,ABP弥补碳源和氮源改善饲料发酵品质剂提高消化率。
The experiment studied the effect of amino acid by-products(ABP)on fermentation quality and digestibility of vegetable waste silage.The control group did not have any addition,the experimental group 1 was added 2.5%ABP,and the experimental group 2 was added 2.5%ABP+1%urea+2%sodium chloride.After 60 d of fermentation,the relevant indicators were determined.The results showed that the sensory scores of the experimental group were significantly increased(P<0.05),which belonged to the range of good feed and high-quality feed.The pH value of experimental group was significantly lower than that of control group(P<0.05).The content of crude protein(CP)in experimental group 2 was significantly higher than that of control group(P<0.05).The content of acetic acid(AA)and lactic acid(LA)in experimental group were significantly higher than those of control group(P<0.05),and the content of butyric acid(BA)in experimental group was lower than that of control group(P>0.05).The digestibility of dry matter(DM)and acid detergent fiber(ADF)in experimental group was significantly higher than those of control group(P<0.05).The digestibility of neutral detergent fiber(NDF)in experimental group was higher than that of control group,but the difference was not significant(P>0.05).The experiment indicates that the available carbon and nitrogen sources in vegetable waste can not meet the needs of added bacteria,and ABP compensates for the carbon and nitrogen sources to improve feed fermentation quality and increase digestibility.
出处
《饲料研究》
CAS
北大核心
2021年第12期90-92,共3页
Feed Research
基金
国家自然科学基金(项目编号:31960010)。
