id	keyword
ajpf-689	energy
ajpf-689	protein
ajpf-689	pigs
ajpf-689	feed
ajpf-689	fibre
ajpf-689	anim
ajpf-689	sci
ajpf-689	diets
ajpf-689	production
ajpf-689	animal
ajpf-689	digestibility
ajpf-689	requirements
ajpf-689	crude
ajpf-689	meal
ajpf-689	swine
ajpf-689	utilization
ajpf-689	tegbe