Due to increasing public concern regarding separation of the dairy cow and calf within the first days after birth, alternative systems, where cows and calves stay in contact for an extended period, are receiving increasing interest from a broad array of researchers and other stakeholders. With more research in the area, there is a risk of inconsistencies emerging in the use of terminology. To create a better consensus in further discussions, the aim of this Research Reflection is to provide definitions and propose a common terminology for cow-calf contact in dairy production. We also suggest definitions for various systems allowing cow-calf contact and describe the distinct phases of cow-calf contact systems.
Feather pecking and cannibalism may reduce the potential of organic husbandry to enhance the w of laying hens.We report risk factors for these issues based on a large survey of 107 commercial flocks in eight European countries. Information was collected regarding housing, management and flock characteristics (age, genotype). Near the end of lay, 50 hens per flock were assessed for plumage 2 condition and wounds. Potential influencing factors were screened and submitted to a multivariate model. The majority of the flocks (81 %) consisted of brown genotypes and were found in six countries.Since white genotypes (19 %) were found only in the two Scandinavian countries, a country effect could not be excluded. Therefore separate models were made for brown and white genotypes. Feather damage in brown hens could be explained by a model containing a lower dietary protein content and no daily access to the free range (30 % of the variation explained). For feather damage in white hens no model could be made. Wounds in brown hens were associated with not having daily access to free range (14 % of the variation explained). Wounds in white hens were explained by a model containing not topping up litter during the laying period (26 % of the variation explained). These results suggest that better feeding management, daily access to the free range area and improved litter management may reduce incidence of plumage damage and associated injurious pecking, hence enhancing the welfare of organic laying hens. Since this was an epidemiological study, further experimental studies are needed to investigate the causal relationships.
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