H.J. Blokhuis

ORCID: 0000-0003-3608-6355
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About
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Research Areas
  • Animal Behavior and Welfare Studies
  • Animal Nutrition and Physiology
  • Meat and Animal Product Quality
  • Livestock and Poultry Management
  • Human-Animal Interaction Studies
  • Effects of Environmental Stressors on Livestock
  • Agriculture Sustainability and Environmental Impact
  • Veterinary Equine Medical Research
  • Animal Disease Management and Epidemiology
  • Veterinary Practice and Education Studies
  • Primate Behavior and Ecology
  • Animal Genetics and Reproduction
  • Animal Behavior and Reproduction
  • Animal Vocal Communication and Behavior
  • Insect and Pesticide Research
  • Sports Performance and Training
  • CRISPR and Genetic Engineering
  • Social Policy and Reform Studies
  • Rabbits: Nutrition, Reproduction, Health
  • Agricultural safety and regulations
  • Genetic and phenotypic traits in livestock
  • Stress Responses and Cortisol
  • Animal testing and alternatives
  • Agricultural Economics and Policy
  • Muscle metabolism and nutrition

Swedish University of Agricultural Sciences
2014-2023

Wageningen University & Research
2003-2007

Schothorst Feed Research
2001-2004

Institute of Animal Sciences
2004

Leiden University
1998

Ministry of Agriculture, Nature and Food Quality
1987

10.1016/0168-1591(86)90040-7 article EN Applied Animal Behaviour Science 1986-08-01

Abstract Animal welfare is of increasing significance for European consumers and citizens. Previously, agricultural production focused mainly on supply, price competition but now expect their food to be produced processed with greater respect the animals. Food quality therefore determined by status animals from which it was as well nature safety end product. Thus, practical improvement strategies reliable on-farm monitoring systems assessing animals’ evaluating potential risks are urgently...

10.1017/s096272860002604x article EN Animal Welfare 2003-11-01

1. In previous studies, a lack of agreement in measurements plasma corticosterone concentrations and heterophil:lymphocyte (H/L) ratio as physiological indices stress, caused by hunger frustration restricted-fed broiler breeders, was observed. It could be suggested that the differences between studies were duration restriction time day measurements. Therefore, present study concentration H/L again determined restricted- ad libitum-fed growing taking possible causes disagreement into account....

10.1080/00071660120121355 article EN British Poultry Science 2002-05-01

Abstract Welfare Quality® was the largest ever European research project on animal welfare. Here, we briefly describe some major achievements of and identify future priorities, potential strategies organisational structures to build outcomes. Achievements include: definition principles criteria good welfare; development standardised, primarily animal-based measures for each welfare criterion their integration in an overall assessment model. Since could not answer all questions recommend:...

10.1080/09064702.2010.523480 article EN Acta Agriculturae Scandinavica Section A – Animal Science 2010-09-01

10.1016/0168-1591(84)90104-7 article EN Applied Animal Behaviour Science 1984-03-01

AbstractThe conditions under which laying hens are kept remain a major animal welfare concern. It is one of the most intensive forms production and number animals involved very high. Widespread public debate has stimulated call for more friendly, alternative systems to barren conventional cages. Directive 1999/74/EC encouraged technical changes in current systems. Not only have traditional cages been modified (so-called 'enriched cages'), but also new (e.g. aviaries) developed. There an...

10.1017/s0043933907001328 article EN World s Poultry Science Journal 2007-03-01

This paper systematically evaluates the extent to which achieving UN sustainable development goals (SDGs) is compatible with improving animal welfare. The analyses were based on discussion and independent scoring in a group of 12 participants academic backgrounds within agricultural or veterinary sciences. We considered all categories animals; those kept for food production, working companion animals, but also laboratory wild animals. strengths links between welfare an SDG scored 7-point...

10.3389/fvets.2019.00336 article EN cc-by Frontiers in Veterinary Science 2019-10-10

10.1016/j.jveb.2013.04.068 article EN Journal of Veterinary Behavior 2013-05-15

The objectives of this study were to 1) identify determinants poor welfare in commercial broiler chicken flocks by studying the associations between selected resource-based measures (RBM, potential risk factors), such as litter quality and dark period, animal-based indicators (ABM), foot pad dermatitis lameness, 2) establish breadth effect a factor determining range animal associated with each factors (i.e., number ABM related specific RBM). Eighty-nine inspected 4 European countries...

10.3382/ps.2013-03208 article EN cc-by-nc-nd Poultry Science 2013-10-17

In three experiments, a commercial non-invasive heart-rate monitor, Polar ® Sport Tester (PST), was validated for use with dairy cows. First, 10 monitors were tested using pulse generator, which produced pulses at levels between 30 and 240 bpm. PST values generated beats highly correlated (r = 0.97) but varying delay (5–55 s), depending on pulse-rate level.In second experiment, cows quietly standing or exercising treadmill while their heart rates recorded by direct-wire electrocardiograph...

10.4141/cjas94-066 article EN Canadian Journal of Animal Science 1994-09-01

1. The open‐field and tonic immobility reactions of female domestic chicks 2 genetic lines which showed high (HP) or low (LP) levels feather pecking were compared.2. Chicks the LP line less freezing, vocalised walked sooner more in open field than did their HP counterparts.3. There no differences between durations responses, at least present study.4. pattern results may reflect divergence underlying social motivation rather fearfulness.

10.1080/00071669508417798 article EN British Poultry Science 1995-09-01

Abstract 1. Adult White Leghorn hens showing short or long tonic immobility reactions were classified as low‐fear (LF) high‐fear (HF) responders, respectively. Following cannulation, their adrenocortical responsiveness to ACTH administration and the effects of chronic frustration induced by thwarting feeding on plasma corticosterone concentrations heterophil/lymphocyte (H/L) ratios measured at regular intervals. 2. injection elicited significant similar mean increases in circulating both LF...

10.1080/00071668908417135 article EN British Poultry Science 1989-03-01
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