id	keyword
ajpf-3299	pig
ajpf-3299	africa
ajpf-3299	production
ajpf-3299	pork
ajpf-3299	pigs
ajpf-3299	farmers
ajpf-3299	population
ajpf-3299	pig production
ajpf-3299	feed
ajpf-3299	meat
ajpf-3299	systems
ajpf-3299	livestock
ajpf-3299	nations
ajpf-3299	farming
ajpf-3299	climate
ajpf-3299	disease
ajpf-3299	products
ajpf-3299	potential
ajpf-3299	breeds