A survey of layer-type pullet rearing in Switzerland

Battery cages for laying birds were banned in Switzerland in 1981. Several new systems were developed in the years that followed, but to date only the deep litter and aviary systems have complied with both the regulations of the Swiss Animal Welfare Act and given satisfactory production results. The ways in which layer replacements are reared has been found to be crucial if they are to be able to cope optimally with the new aviary system. For this reason, the Federal Veterinary Office commissioned a survey to investigate how layer replacement pullets were reared in Switzerland. Sixty six out of a total of 155 farms that had facilities to rear 500 or more chicks at one time were visited between April and December 1997. Data were gathered on the type of housing system, management methods and the prevalence of feather pecking. The results of the survey are presented in a descriptive way and discussed in relation to the conditions during the laying perio

Survey of laying hen husbandry in Switzerland

In Switzerland eggs have not been produced in battery cages since January 1992. During the 10 year period from 1981 farmers replaced their battery cages with deep litter, aviary and grid-floor systems and modified cages. However, the cages used to replace the conventional battery cages and most of the grid- floor systems did not fulfil the requirements of the Swiss Welfare Act and they were not permitted to be advertised or sold thereafter. Sixteen years after the ban on battery cages, the Federal Veterinary Office has undertaken a survey to determine how laying hens are kept in Switzerland and how the alternative systems have fared. The survey was carried out on 96 randomly chosen farms with at least 500 hen places to find out more about the housing conditions, management processes, status and performance of hens. The results show that aviaries are very common in Switzerland (65% of the laying hens) and that the laying performance in these systems is significantly higher than that in grid- floor systems and similar to that in battery cages. Provision of a protected outdoor area is a valuable benefit. To be successful with aviary systems it is necessary for pullets to spend the rearing period under similar housing condition

Feather pecking in growers: a study with individually marked birds

Abstract 1. The aim of the present study was to investigate whether individual birds specialise in feather pecking. Growers were individually marked and reared in groups of 30 or 31 in pens with a slatted oor. At an age of 4 to 6 weeks feather pecking was frequent in all pens. 2. On average 83% of all group members (10 groups, experiment 1) were recorded at least once as initiator of a feather pecking interaction. In each group 2 to 6 individuals feather pecked more than twice as often as the average for the group, and were de ned as 'high rate peckers'. They initiated 39% of all recorded feather pecking interactions