Laying hen performance tests in station and under field conditions in organic production systems

This paper describes the current methods used for laying hen performance tests in Germany. Specific emphasis is placed on illustrating the characteristics of ecological egg production. The concept of a future coordinated field test for ecological egg production is set forth. Official laying hen performance tests are no longer implemented by the lands in Germany; independent performance information on breed comparisons is therefore unattainable. Information on hybrid breed performance for layers under ecological production conditions is even more difficult for producers to obtain. The interactions between various laying hen hybrids and different housing systems are well documented, and almost always result in changes in group ranking. The reciprocal effects between breeds and housing systems play an important role in ecological egg production, as these interactions are more pronounced than those observed in conventional production systems. The development of a field test for laying hens in ecological systems can be a way to reduce the information deficit of farmers regarding performance and behaviour of hybrid hens under ecological conditions. The concept must ensure practicable and economical data acquisition. A suitable and economical test design for an evaluation of the average suitability of laying hen hybrids for organic farming has to be developed.

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