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- Hopster, H., et al. Show all 2 Author
- Journal of agricultural & environmental ethics 2006 v.19 no.1 pp. 77-89
- livestock; animal behavior; animal welfare; abnormal behavior; stereotyped behavior; motivation; animal preferences; sheep; goats; animal husbandry; animal feeding; sheep feeding; international cooperation; rating scales; organic production; consumer attitudes; food labeling; Netherlands; Europe
- Hopster, H., et al. Show all 4 Authors
- Journal of animal science 2007 v.85 no.2 pp. 420-429
- sows; pregnancy; swine housing; group housing; social dominance; birth weight; body weight; liveweight gain; animal behavior; piglets; aggression; backfat; thickness; saliva; cortisol; temporal variation; litter size; fetal death; gestation period; weaning weight
- ... Previous studies on group housing of pregnant sows have mainly focused on reproduction, but we hypothesized that the social rank of pregnant sows housed in groups could also affect birth weight, growth, and behavior of their offspring. Therefore, in the present study, pregnant gilts and sows were housed in 15 different groups (n = 7 to 14 animals per group) from 4 d after AI until 1 wk before the ...
- Hopster, H., et al. Show all 7 Authors
- Domestic animal endocrinology 2006 v.30 no.3 pp. 218-238
- sows; pregnancy; cortisol; oral administration; gestation period; progeny; piglets; low birth weight; adrenal cortex; corticotropin; stress tolerance; slaughter weight; carcass composition
- ... Prenatal stress is known to affect several offspring characteristics, but its effects depend among other factors on the period of gestation in which it is applied. In the present study, oral administration of hydrocortisone-acetate (HCA) was used to elevate cortisol concentrations in pregnant sows to levels also observed after psychological stress. HCA was administered during three different perio ...