| Autor: |
Vargas LB; Department of Animal Sciences, Faculty of Agrarian Sciences - Ferderal University Of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil., Caldara FR; Department of Animal Sciences, Faculty of Agrarian Sciences - Ferderal University Of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil., Lippi ICC; Department of Animal Sciences, Faculty of Agrarian Sciences - Ferderal University Of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil., de Oliveira GF; Department Of Animal Production, São Paulo State University (UNESP), São Paulo, Brazil., Odakura AM; Department of Animal Sciences, Faculty of Agrarian Sciences - Ferderal University Of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil., Burbarelli MFC; Department of Animal Sciences, Faculty of Agrarian Sciences - Ferderal University Of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil., Garcia RG; Department of Animal Sciences, Faculty of Agrarian Sciences - Ferderal University Of Grande Dourados, Dourados, Mato Grosso do Sul, Brazil., Almeida Paz ICL; Department Of Animal Production, São Paulo State University (UNESP), São Paulo, Brazil., Dos Santos LS; Department Of Animal Nutrition And Pastures, Federal Rural University of Rio De Janeiro (Ufrrj), Animal Science Institute, Seropédica, Rio de Janeiro, Brazil. |
| Abstrakt: |
This research aims to evaluate the effects of different types and strategies of environmental enrichment for weaned pigs on behavior. Forty weaned piglets aged 21 to 28 days were distributed in a completely randomized design in five treatments: without enrichment object, full-time cognitive enrichment, intermittent cognitive enrichment, alternate cognitive and sensory enrichment every 24 hours, and alternate cognitive and sensory enrichment every 48 hours. Behavioral observations were made for 15 days considering pig as experimental unit. Pigs of control and continuous cognitive enrichment treatments were submitted to human approach test, novel arena test, and novel object test. Pigs kept in an unstimulated environment show a higher frequency of unwanted behaviors compared to pigs in other treatments regardless of enrichment type. Pigs with alternation of enrichment type every 24 hours showed a longer interaction time with enrichment objects. Enrichment objects in rearing environment during nursery phase reduced undesirable behaviors and reactivity to unknown situations. Strategies such as alternating the type of enrichment every 24 or 48 hours are effective in maintaining the novelty and the animals' interest. |
