id	keyword
american_scientific_journal-603	production
american_scientific_journal-603	sheep
american_scientific_journal-603	pastoral
american_scientific_journal-603	system
american_scientific_journal-603	livestock
american_scientific_journal-603	crop
american_scientific_journal-603	ethiopia
american_scientific_journal-603	study
american_scientific_journal-603	agro
american_scientific_journal-603	production systems
american_scientific_journal-603	feed
american_scientific_journal-603	research
american_scientific_journal-603	respondents
american_scientific_journal-603	area