Aspectos bioclimáticos e comportamento de novilhas leiteiras em sistema silvipastoril durante diferentes estações do ano
The thermal variability has great influence in the different animal production systems, especially with regard to the altered behavior of the animals due to the high thermal stress in and out of livestock facilities. In the meantime, alternative systems such as silvopastoral has potential to increas...
| Autor principal: | Sponchiado, Mauricio Zotti |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/11189 |
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| Resumo: |
The thermal variability has great influence in the different animal production systems, especially with regard to the altered behavior of the animals due to the high thermal stress in and out of livestock facilities. In the meantime, alternative systems such as silvopastoral has potential to increase the thermal comfort of dairy cattle, and mitigate the effects of global warming. Because of concern about the climate and its variations, and its effects on welfare animals raised to pasture, this study aimed to evaluate the influence of silvopastoral system in the behavior of dairy heifers at different times of the year. The work was conducted on a property within the city of Realeza (PR). Two treatments were used, these outdoor and one with shading provided by silvopastoral system of Eucalyptus grandis. The animals were distributed through a completely randomized design with 5 jersolando heifers per treatment. The evaluations were conducted between 07 am and 05 pm hours for 15 days, and the observation time will be 10 minutes with 30 minutes apart. After this step, the results were tabulated and subsequently evaluated via statistical software R. The main results show that the silvopastoral system directly influenced the behavior of dairy heifers during the summer. However, only rumination activity was higher for animals kept in the silvopastoral system, compared to animals to full sun, out of all behavioral repertoire evaluated. The main behaviors presented by the animals were grazing idling time. In the outdoor system, the animals spent more time performing such activities, whose variations indicate possible relationship to heat stress, especially in summer. Therefore it is concluded that the shading from the silvopastoral system directly influences the behavior of the animals and their well-being. |
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