1. 1. Alfonso-Torres KA, Gargaglioni LH, Pizauro JM, et al (2009): Breeder age and bone development in broiler chicken embryos. Braz J Vet. Res Anim Sci, 61, 219-226.
2. Angel R (2007): Metabolic disorders: limitations to growth of and mineral deposition into the broiler skeleton after hatch and potential implications for leg problems. J Appl Poult Res, 16, 138-149.
2. 3. AOAC (2000): Association of Official Analytical Chemists. Official Methods of Analysis of AOAC International. 17th ed, Gaithersburg.
3. 4. Beattie JH, Avenell A (1992): Trace element nutrition and bone metabolism. Nutr Res Rev, 5, 167–188.
4. 5. Boss CB, Fredeen KJ (2004): Concepts, Instrumentation and Techniques in Inductively Coupled Plasma Optical Emission Spectrometry, 3th ed. Perkin Elmer Life and Analytical Sciences, USA.
5. 6. Dawson B, Trapp RG (2001): Basic and Clinical Biostatistics, 3rd ed. Lange Medical Books/McGraw-Hill Medical Publishing Division, New York.