Efeitos do estresse da orquiectomia na citologia broncoalveolar de bezerros da raça Holandesa

PESQUISA VETERINARIA BRASILEIRA(2013)

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摘要
The recognition of the impact of certains forms of stress in the animal well being and organic equilibrium, represents a challenge to the adoption of good practices. Thus, this research verified the impact of a painful rotine of the cattle husbandry can cause on pulmonary and systemic immunity. Was evaluated hemogram and cortisol, in four moments, being M1, M6, M7 e M8 (respectively seven days before and one, three and eight days after the painful challenge) and bronchoalveolar cytology, obtained by bronchoscopy, in the moments of M1, M6 e M8. There was a reduction of the erythrogram values in the first day after the challenge, compatible with the anaplasmosis and aggravated by the blood loss during the surgery and an influx of leukocytes to the pulmonary region. Eight days after the challenge, became evident the cortisol increase, enerating leukocytosis by neutrophilia and monocytosis in the blood with a probable reduction of chemotaxis to the lungs, turning the respiratory tract potentially more susceptible to infections, suggesting that this practice, even accompanied by analgesic protocol, increases the risk of pneumonia, affecting the animal well-being.
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关键词
Stress,orchiectomy,immunity,cattle,cortisol,macrophage,respiratory tract,pneumonia
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