Temperament influences endotoxin-induced changes in rectal temperature, sickness behavior, and plasma epinephrine concentrations in bulls:

Innate Immunity

Nicole CBurdick¹ 

关键词: bulls;    cortisol;    epinephrine;    lipopolysaccharide;    temperament;   

DOI  :  10.1177/1753425910379144

学科分类：生物科学（综合）

来源: Sage Journals

【 摘 要 】

This study was designed to determine the influence of temperament on endotoxin-induced changes in body temperature, sickness behavior, and stress hormone concentrations in cattle. Brahman bulls were selected based on temperament score measured 28 d prior to weaning. In dwelling recording devices were used to monitor rectal temperature, and jugular catheters were used to collect blood samples to determine cortisol and epinephrine concentrations before and after LPS administration (0.5 μg/kg body weight). Temperamental bulls had the lowest peak rectal temperature and sickness behavior scores relative to the Calm and Intermediate bulls. Prior to the administration of LPS, Temperamental bulls had greater cortisol and epinephrine concentrations than Calm or Intermediate bulls. Cortisol concentrations increased following LPS administration but were not affected by temperament. Epinephrine concentrations peaked 1 h after LPS administration in Calm bulls. Temperamental bulls did not exhibit an epinephrine respons...

【 授权许可】

CC BY