6Elwinge. K. Different energy levels and restricted feeding to three strains of SCWL hybrid, 1, effect on egg production[J]. Poultry abstract, 1982,9 : 315.
7Ekern, A. , F. Sundastol. Energy metabolism of farm animals. Proceedings of the 9th symposium held at lillehmmer, Norway. Europenan Association for animal production EAAP Publication. 1982 : 29.
8杨凤.动物营养学[M].北京:农业出版社,1999.
9Pesti G M. Characterization of the respond of male broiler chickens to diets of various protein and energy contents[J]. Br Poult Sci, 1982,23 : 527-537.
