Publications by authors named "U Knierim"

Two major welfare problems in laying hen farming are keel bone damage (KBD) and cannibalism. Their assessment is time-consuming, needs well-trained assessors, and prevalence estimates are often imprecise due to small sample sizes. Here, the bottleneck slaughterhouse comes into focus where large numbers of animals can be inspected.

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Cow-calf contact systems (CCCs), where dairy cows nurse their own calves for several weeks while being milked, have some advantages in terms of animal welfare. However, one major challenge is the loss of collected milk due to suckling and milk ejection problems during milking. Reducing daily CCC can decrease milk losses.

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This study presents an evaluation of on-farm self-assessment using animal-based indicators to support fattening poultry farmers in managing the welfare of their animals. Self-assessment guidelines elaborated by a German expert group were evaluated together with 11 trained broiler and 11 trained turkey farmers. The participating farmers tested a protocol with 18 indicators for broilers and a protocol with 20 indicators for turkeys on their farms for 1 y.

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Husbandry of horned cows is one alternative to disbudding that respects the animals´ integrity. Concurrently, housing and management should be aligned with the animals' needs to minimize social interactions that can result in integument damage (ID) and udder injuries associated with blood in milk (BM). No information is available on incidences of BM, nor on specific preventive measures.

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This Scientific Opinion concerns the welfare of Domestic ducks (), Muscovy ducks () and their hybrids (Mule ducks), Domestic geese () and Japanese quail () in relation to the rearing of breeders, birds for meat, Muscovy and Mule ducks and Domestic geese for foie gras and layer Japanese quail for egg production. The most common husbandry systems (HSs) in the European Union are described for each animal species and category. The following welfare consequences are described and assessed for each species: restriction of movement, injuries (bone lesions including fractures and dislocations, soft tissue lesions and integument damage and locomotory disorders including lameness), group stress, inability to perform comfort behaviour, inability to perform exploratory or foraging behaviour and inability to express maternal behaviour (related to prelaying and nesting behaviours).

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