Use of the range area in organic egg production systems: effect of climatic factors, flock size, age and artificial cover

Author： Hegelund L.   Sørensen J.T.   Kjær J.B.   Kristensen I.S.  

Publisher： Taylor & Francis Ltd

ISSN： 1466-1799

Source： British Poultry Science, Vol.46, Iss.1, 2005-02, pp. : 1-8

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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