The nutritive value, fermentation profile, microbial population, and effluent and gases losses of sweet potato vine silages, with and without microbial inoculant, were evaluated. The experiment was conducted in a 5 × 2 factorial arrangement, with five sweet potato genotypes (BD‐08, BD‐23, BD‐25, BD‐31TO and BD‐43) and presence/absence of microbial inoculant (Sil‐All^® 4 × 4), in a randomized blocks design, with three replicates. After 48 hr of wilting in field, the vines were chopped, inoculated with microbial inoculant and ensiled in 10‐L plastic buckets. The genotype × microbial inoculant interaction was significant (p < .05) only for in vitro dry matter digestibility (IVDMD), whose coefficients ranged from 64.2% to 74.2%. The genotype affected significantly (p < .05) the pH, dry matter and acid detergent fiber contents, and lactic and acetic acid concentrations of the silages. The inoculant affected significantly (p < .05) the pH, ammonia nitrogen, and lactic acid contents, and gases losses. We concluded that all genotypes of sweet potato produced good quality silages. Microbial inoculant reduced pH, ammonia nitrogen concentration and gases losses, and increased lactic acid content of silages. The IVDMD of silages made from BD‐25 and BD‐31TO genotypes was improved with microbial inoculant.

中文翻译：

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含或不含微生物接种剂的甘薯青贮饲料的营养价值，发酵特性和废水损失

在有和没有微生物接种剂的情况下，对甘薯葡萄青贮饲料的营养价值，发酵特性，微生物数量以及流出物和气体损失进行了评估。该实验在一个5×2因子排列进行的，具有五个甘薯基因型（BD-08，BD-23，BD-25，BD-31TO和BD-43）和存在/不存在的微生物接种剂（SIL-所有^® 4×4），采用随机区组设计，包含三个重复。在野外枯萎48小时后，将葡萄藤切碎，接种微生物接种剂，然后将其放在10升塑料桶中。基因型×微生物接种物的相互作用 仅对体外干物质消化率（IVDMD）显着（p <.05），其系数范围为64.2％至74.2％。基因型受到显着影响（p <.05）pH值，干物质和酸性洗涤剂纤维的含量，以及青贮饲料中乳酸和乙酸的浓度。接种物会显着影响（p  <.05）pH，氨氮和乳酸含量以及气体损失。我们得出的结论是，所有基因型的甘薯均产生优质的青贮饲料。微生物接种剂可降低pH值，氨氮浓度和气体损失，并增加青贮饲料中的乳酸含量。用微生物接种剂可以改善由BD-25和BD-31TO基因型制成的青贮饲料的IVDMD。