The facility is expected to open by the end of 2026.
Juncao contains about 18.6% crude protein and a high natural sugar content (around 7%), making it excellent for making quality silage without adding extra molasses.
The programme will focus on risks affecting ecosystems, food security, water availability and livelihoods.
The standardisation process comes as African countries seek to strengthen intra-African trade under the African Continental Free Trade Area (AfCFTA).
A further 14 facilities are at various stages of completion across the country, strengthening livestock health.
Continued compliance with animal-health measures, including movement controls and disease reporting, will remain necessary to reduce the risk of further spread.
ASF is a highly contagious viral disease affecting domestic and wild pigs.
The initial focus will be on dairy cattle, piggery and poultry enterprises.
The government expects the work to be completed by the end of August.
The support follows commitments made under the Botswana-Lesotho Binational Commission, where Botswana announced assistance of 100,000 doses of FMD vaccine to Lesotho.