Asian-Australasian Journal of Animal Sciences

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Community of natural lactic acid bacteria and silage fermentation of corn stover and sugarcane tops in Africa

  • Cai, Yimin (Japan International Research Center for Agriculture Sciences (JIRCAS)) ;
  • Du, Zhumei (College of Grassland Science and Technology, China Agricultural University) ;
  • Yamasaki, Seishi (Japan International Research Center for Agriculture Sciences (JIRCAS)) ;
  • Nguluve, Damiao (Agricultural Research Institute of Mozambique) ;
  • Tinga, Benedito (Agricultural Research Institute of Mozambique) ;
  • Macome, Felicidade (Agricultural Research Institute of Mozambique) ;
  • Oya, Tetsuji (Japan International Research Center for Agriculture Sciences (JIRCAS))
  • Received : 2019.04.25
  • Accepted : 2019.10.17
  • Published : 2020.08.01
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Abstract

Objective: To effectively utilize crop by-product resources to address the shortage of animal feed during the dry season in Africa, the community of natural lactic acid bacteria (LAB) of corn stover and sugarcane tops and fermentation characteristics of silage were studied in Mozambique. Methods: Corn stover and sugarcane tops were obtained from agricultural field in Mozambique. Silage was prepared with LAB inoculant and cellulase enzyme and their fermentation quality and microbial population were analyzed. Results: Aerobic bacteria were the dominant population with 107 colony-forming unit/g of fresh matter in both crops prior to ensiling, while 104 to 107 LAB became the dominant bacteria during ensiling. Lactobacillus plantarum was more than 76.30% of total isolates which dominated silage fermentation in the LAB-treated sugarcane top silages or all corn stover silages. Fresh corn stover and sugarcane tops contain 65.05% to 76.10% neutral detergent fiber (NDF) and 6.52% to 6.77% crude protein (CP) on a dry matter basis, and these nutrients did not change greatly during ensiling. Corn stover exhibits higher LAB counts and water-soluble carbohydrates content than sugarcane top, which are naturally suited for ensiling. Meanwhile, sugarcane tops require LAB or cellulase additives for high quality of silage making. Conclusion: This study confirms that both crop by-products contain certain nutrients of CP and NDF that could be well-preserved in silage, and that they are potential roughage resources that could cover livestock feed shortages during the dry season in Africa.

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References

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