Abstract:
:Environment enrichment is a rising topic for animal welfare but measures to identify effective enrichment interventions are lacking. In humans and rodent species, environmental enrichment increases brain-derived neurotrophic factor (BDNF), the most abundant neurotrophin in the brain. Higher BDNF concentration is ultimately linked to higher stress resilience, and BDNF in the hippocampus enhances learning and memory. In addition, BDNF concentrations in the brain and blood are correlated, offering the opportunity to use peripheral BDNF as a minimally invasive measure of effective enrichment reflecting neural changes. This study investigated changes in serum BDNF following the provision of environmental enrichment to pigs. Pigs were housed in different environments during lactation (enriched vs barren) and after weaning (enriched vs barren), using a 2 × 2 factorial design and the provision of a foraging block as enrichment. Pigs provided with foraging enrichment during lactation or after weaning tended to have higher serum BDNF concentrations than pigs housed in a barren environment, and this effect was significant for pigs enriched during lactation when sampled 5 wk after weaning. Brain-derived neurotrophic factor concentration reduced as the pigs aged from 3 to 11 wk. The measurement of BDNF in serum brings a practical approach to study the effects of environmental enrichment on neurobiological changes in domestic animals. A better understanding of the factors modulating BDNF and its link to welfare states could bring insight into the benefits of stimulating an animal's life.
journal_name
Domest Anim Endocrinoljournal_title
Domestic animal endocrinologyauthors
Rault JL,Lawrence AJ,Ralph CRdoi
10.1016/j.domaniend.2018.05.007subject
Has Abstractpub_date
2018-10-01 00:00:00pages
67-70eissn
0739-7240issn
1879-0054pii
S0739-7240(18)30049-3journal_volume
65pub_type
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