Chemical composition and in vitro digestibility of corn stover during field exposure and their fermentation characteristics of silage prepared with microbial additives

OBJECTIVE: To effectively use corn stover resources as animal feed, we explored the chemical composition and in vitro digestibility of corn stover during field exposure and the fermentation characteristics of silage prepared with lactic acid bacteria (LAB) and cellulase

Détails bibliographiques
Publié dans:Asian-Australasian journal of animal sciences. - 1998. - 32(2019), 12 vom: 01. Dez., Seite 1854-1863
Auteur principal: Gao, Jun Lei (Auteur)
Autres auteurs: Wang, Peng, Zhou, Chang Hai, Li, Ping, Tang, Hong Yu, Zhang, Jia Bao, Cai, Yimin
Format: Article en ligne
Langue:English
Publié: 2019
Accès à la collection:Asian-Australasian journal of animal sciences
Sujets:Journal Article Cellulase Corn stover In vitro digestibility Lactic Acid Bacteria Silage Fermentation
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520 |a OBJECTIVE: To effectively use corn stover resources as animal feed, we explored the chemical composition and in vitro digestibility of corn stover during field exposure and the fermentation characteristics of silage prepared with lactic acid bacteria (LAB) and cellulase 
520 |a METHODS: Corn ears including the cobs and shucks were harvested at the ripe stage. The corn stover was exposed in the field under natural weather conditions. Silages were prepared after 0, 2, 4, 7, 15, 30, and 60 d of exposure. Corn stover was chopped into approximately 1-2 cm lengths and then packed into 5 liter plastic silos. The ensiling density was 550.1±20.0 g/L of fresh matter, and the silos were kept at room temperature (10-25°C). Silage treatments were designed as follows: without additives (control), with LAB, with cellulase, and with LAB+cellulase. After 45 d of fermentation, the silos were opened for chemical composition, fermentation quality and in vitro digestion analyses 
520 |a RESULTS: After harvest, corn stover contained 78.19% moisture, 9.01% crude protein (CP) and 64.54% neutral detergent fiber (NDF) on a dry matter (DM) basis. During field exposure, the DM, NDF, and acid detergent fiber (ADF) contents of corn stover increased, whereas the CP and water-soluble carbohydrate contents and in vitro digestibility of the DM and CP decreased (p<0.05). Compared to the control silage, cellulase-treated silage had lower (p<0.05) NDF and ADF contents. The pH values were lower in silage treated with LAB, cellulase, or LAB+cellulase, and lactic acid contents were higher (p<0.05) than those of the control. Silage treated with cellulase or LAB+cellulase improved (p<0.05) the in vitro DM digestibility (IVDMD) compared to that of the control or LAB-treated silage 
520 |a CONCLUSION: Corn stover silage should be prepared using fresh materials since stover nutrients are lost during field exposure, and LAB and cellulase can improve silage fermentation and IVDMD 
650 4 |a Journal Article 
650 4 |a Cellulase 
650 4 |a Corn stover 
650 4 |a In vitro digestibility 
650 4 |a Lactic Acid Bacteria 
650 4 |a Silage Fermentation 
700 1 |a Wang, Peng  |e verfasserin  |4 aut 
700 1 |a Zhou, Chang Hai  |e verfasserin  |4 aut 
700 1 |a Li, Ping  |e verfasserin  |4 aut 
700 1 |a Tang, Hong Yu  |e verfasserin  |4 aut 
700 1 |a Zhang, Jia Bao  |e verfasserin  |4 aut 
700 1 |a Cai, Yimin  |e verfasserin  |4 aut 
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