Andreas Briese

Learn More
The wild ancestors of the domestic pekin and muscovy ducks are anatomically, physiologically and behaviourally well adapted to living on and at the water. The domestic ducks kept for fattening purposes still show clear preferences for open water and make use of water for foraging and feeding, drinking, for general exploration, locomotion and preening, even(More)
Feather pecking and cannibalism are serious problems in keeping Moscovy ducks. Prevention of feather pecking by regularly applied beak and claw trimming are increasingly criticised by the public. The recommendation of the Council of Europe (COE) for the keeping of Muscovy ducks in farming systems calls for environmental enrichment including water for(More)
The available floor space has a strong impact on the execution of various behaviours of laying hens. Presently, in Germany detailed requirements on the housing of pullets are insufficient. In order to get a first approximation, the floor space covered by pullets was determined by the colour contrast planimetric method KobaPlan. The measurements on standing(More)
1. Laying hens in two aviary flocks of 1250 females and 12 males were investigated to determine if hens used the same roosting site more often than expected by chance and whether hens that roost next to each other for two consecutive nights (close groups) had fewer agonistic interactions than hens roosting far away from each other (distant groups) when put(More)
Sufficient floor space is a fundamental precondition for poultry to perform normal behavioural patterns. To calculate and determine stocking densities, it is essential to know the absolute minimum surface area required by any given animal (body space). Additional space is required for characteristic behaviours (behavioural space) and for adequate(More)
Space allowance for laying hens is one of the most disputed criteria of modern laying hen husbandry. Fast and cheap methods to achieve reliable data about the space occupied by laying hens are missing. This studie is based on a method, that can be used to measure the space ocupied by laying hens using digital images from above. 100 hens were photographed(More)
  • A Briese
  • 2002
As of 1 September, 2001 existing legislation regulating outdoor dog husbandry is replaced by the domestic dog welfare directive of 2 May, 2001. The new directive applies to details of housing and breeding of dogs kept indoors and as domestic companions. Thus, minimum requirements for housing, care and feeding now apply to the great majority of private dog(More)
Legal requirements on space and dimensions regarding furnished cages and alternative systems in laying hen husbandry are subject of constant discussion. Further knowledge about basic measures of the hens might help to come to reasonable results in the future. Digital images of Lohmann Selected Leghorn (LSL) and Lohmann Brown (LB) laying hens, housed at the(More)
The action of a thymic extract containing thymic polypeptides, isolated from bovine thymus, on the leukocyte count in the peripheral blood of X-ray irradiated rats was investigated. The results showed that the thymic extract increased the per cent value of leukocytes to about double in the irradiated and treated animals as against the irradiated and not(More)
Recent developments in the European and national legislation regarding minimum standards for the keeping of laying hens will be causing changed conditions for egg production in the medium term. Enriched cages shall allow hens to better fulfill their needs than traditional battery cages. More space for the stretching of wings and legs, perches for resting,(More)