Murwani, Retno and Bayuardhi, B (2007) Broilers Serum Cholesterol and Glutamic Oxaloacetic Transaminase and Their Relation to Antibiotic in Feed and Medication Programs in Four Broiler Producers in Semarang Region-Central Java, Indonesia. International Journal of Poultry Science, 6 (4). pp. 266-270. ISSN 1682-8356