Effects of Lentilactobacillus buchneri and chemical additives on fermentation profile, chemical composition, and nutrient digestibility of high-moisture corn silage

Lei Wang; Jinze Bao; Xingliang Zhuo; Yingqi Li; Wenyuan Zhan; Yixiao Xie; Zhe Wu; Zhu Yu

doi:10.3389/fvets.2023.1296392

Effects of Lentilactobacillus buchneri and chemical additives on fermentation profile, chemical composition, and nutrient digestibility of high-moisture corn silage

Front Vet Sci. 2023 Dec 4:10:1296392. doi: 10.3389/fvets.2023.1296392. eCollection 2023.

Authors

Lei Wang¹, Jinze Bao¹, Xingliang Zhuo¹, Yingqi Li², Wenyuan Zhan¹, Yixiao Xie³, Zhe Wu¹, Zhu Yu¹

Affiliations

¹ College of Grassland Science and Technology, China Agricultural University, Beijing, China.
² State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China.
³ College of Animal Science, Guizhou University, Guiyang, China.

Abstract

High-moisture corn silage presents a novel approach to reduce forage feeding expenses and enhance animal performance. Nevertheless, given corn's proclivity for starch, suboptimal fermentation quality in high-moisture corn silage can lead to spoilage, posing risks to livestock well-being. Therefore, the objective of this study is to evaluate the effects of different additives on the fermentation profile, chemical composition, nutrient digestibility of high-moisture corn (HMC) silage. All treatments improved the quality of high-moisture corn silage fermentation, as demonstrated by a decrease in pH and increase in lactic acid (LA) content. The high-moisture corn silage had a low content of trans fatty acids (TFA). Fermentation effectively decreased prolamin content while increasing 48-h in vitro dry matter digestibility (IVDMD), estimated total tract starch digestibility (eTTSD), total digestible nutrient (TDN), and relative grain quality (RGQ) of high-moisture corn silage. Nonetheless, no effect was observed on the 48-h IVDMD of high-moisture corn silage among the different treatments. Pearson's correlation analysis indicated that neutral detergent fiber (aNDF), neutral detergent insoluble protein (NDIP), crude protein (CP), zein, and prolamin closely correlated with the digestibility of high-moisture corn. The study's findings demonstrate that inoculating L. buchneri and potassium sorbate can improve the quality of high-moisture corn silage fermentation and digestibility in different hybrids. The results will provide insights for enhancing farm productivity and profitability in China.

Keywords: additive; digestibility; ensiling; high-moisture corn; zein.

Grants and funding

The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This work was supported by the National Key R&D Program of China (Grant Nos. 2022YFE0111000 and 2022YFD1602300), Central Government Guided Local Science and Technology Development Projects (Grant No. 2022FRD05029), and the China Agriculture Research System of MOF and MARA (Grant No. CARS-34).