1. Effect of age of the laying hen on the composition of the egg;Anderson;Br. Poult. Sci.,1978
2. Official Methods of Analysis,1975
3. The minimum metabolizable energy requirement of laying hens;Balnave;World’s Poult. Sci. J.,1978
4. Brouwer, E., 1965. Report of Sub-Committee on Constants and Factors. Pages 441–443 in: Proceedings of the 3rd Symposium on Energy Metabolism, European Association of Animal Production Publication 11, Troon, Scotland.
5. Chwalibog, A., 1985. Studies on Energy Metabolism in Laying Hens. Statens Husdyrbrugsfors⊘g, Beretning 578, Denmark.