The Effects of Pen Size and Design, Bedding, Rooting Material and Ambient Factors on Pen and Pig Cleanliness and Air Quality in Fattening Pig Houses

publishedVersio

Farrowing Pens for Individually Loose-Housed Sows: Results on the Development of the SowComfort Farrowing Pen

publishedVersio

Straw vs. peat as nest-building material - The impact on farrowing duration and piglet mortality in loose-housed sows

Author's accepted version (postprint).This is an Accepted Manuscript of an article published by Elsevier in Livestock Science on 20/05/2019.Available online: https://www.sciencedirect.com/science/article/pii/S1871141318304396?via%3DihubacceptedVersio

Evolution of boldness and life-history in response to selective harvesting

Whether intensive harvesting alters the behavioural repertoire of exploited fishes is currently unknown, but plausible. We extend a fish life-history model to account for boldness as a personality trait that affects foraging intensity, which affects energy intake and risk from predation and fishing gear. We systematically investigate life-history and behavioral trait evolution along the boldness-timidity axis in response to the full range of common selectivity and exploitation patterns in fisheries. In agreement with previous studies we find that any type of harvesting selects for fast life histories and that merely elevated, yet unselective, fishing mortality favors boldness. We also find that timid-selective fishing (which can be expected in selected species targeted by active gear types) selects for increased boldness. By contrast, increased timidity is predicted when fishing targets bolder individuals common to passive gears, whether in combination with selection on size or not. Altered behavior caused by intensive harvesting should be commonplace in nature, which can have far-reaching ecological, evolutionary and managerial impacts. Evolution of timidity is expected to strongly erode catchability, which will negatively affect human well-being and influence the reliability of stock assessments that rely on fishery-dependent data.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author

Hvad ved vi om de ældste danske vindmøller?

I mere end 600 år var stubmøllen den vigtigste form for vindkraft i Danmark. For bondesamfund i egne, hvor vandmøller af geografiske årsager ikke lod sig bygge, var den i seks århundreder det eneste alternativ til det tidskrævende arbejde ved håndkværnen. Selv efter at den mere effektive hollandske vindmølle blev almindelig udbredt i begyndelsen af 1800-tallet, var cirka en tredjedel af kongerigets dengang knap 1.500 vand- og vindmøller stubmøller. I dag er kun bevaret 18 af disse møller, der er levn af en teknologihistorisk udvikling, som må have haft stor indflydelse på landbrugets udviklingsmuligheder i de pågældende egne, men som desværre endnu ikke er slet så godt belyst som udviklingen af den senere og mere effektive hollændermølle

Ambidextrous IT Governance: The Art of Balancing Exploration and Exploitation in IT Governance

Through a case study at a global technology company, we investigate how organizations can adapt their IT governance approach to the information system at hand. This is done by considering the degree of information system integration and whether the system is related to supporting operational efficiency (exploitation) or innovation (exploration). Based on the findings of the case study, we introduce the concept of ambidextrous IT governance to describe how IT governance can be adapted to fit the dual needs of both exploration and exploitation through the use of IS

Can we improve maternal care in sows? Maternal behavioural traits important for piglet survival in loose-housed sow herds

Author's accepted version (post-print).This is a pre-copyedited, author-produced version of an article accepted for publication in Journal of Animal Science following peer review. The version of record Ocepek, M., Rosvold, E. M., Andersen-Ranberg, I. & Andersen, I. L. (2017). Can we improve maternal care in sows? Maternal behavioural traits important for piglet survival in loose-housed sow herds. Journal of Animal Science, 95(11), 4708-4717 is available online at: https://doi.org/10.2527/jas2017.1725.Available from 02/11/2018.acceptedVersio

Maternal investment, sibling competition, and offspring survival with increasing litter size and parity in pigs (Sus scrofa)

The aim of this study was to examine the effects of litter size and parity on sibling competition, piglet survival, and weight gain. It was predicted that competition for teats would increase with increasing litter size, resulting in a higher mortality due to maternal infanticide (i.e., crushing) and starvation, thus keeping the number of surviving piglets constant. We predicted negative effects on weight gain with increasing litter size. Based on maternal investment theory, we also predicted that piglet mortality would be higher for litters born late in a sow's life and thus that the number of surviving piglets would be higher in early litters. As predicted, piglet mortality increased with increasing litter size both due to an increased proportion of crushed piglets, where most of them failed in the teat competition, and due to starvation caused by increased sibling competition, resulting in a constant number of survivors. Piglet weight at day 1 and growth until weaning also declined with increasing litter size. Sows in parity four had higher piglet mortality due to starvation, but the number of surviving piglets was not affected by parity. In conclusion, piglet mortality caused by maternal crushing of piglets, many of which had no teat success, and starvation caused by sibling competition, increased with increasing litter size for most sow parities. The constant number of surviving piglets at the time of weaning suggests that 10 to 11 piglets could be close to the upper limit that the domestic sow is capable of taking care of