id	keyword
american_scientific_journal-555	cactus
american_scientific_journal-555	goats
american_scientific_journal-555	intake
american_scientific_journal-555	feed
american_scientific_journal-555	digestibility
american_scientific_journal-555	supplemented
american_scientific_journal-555	hay
american_scientific_journal-555	content
american_scientific_journal-555	study
american_scientific_journal-555	acacia
american_scientific_journal-555	p<0.001
american_scientific_journal-555	ndf