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Response of salivary haptoglobin and serum amyloid A to social isolation and short road transport stress in pigs

L Soler, A Gutiérrez, D Escribano, M Fuentes, J J Cerón
Research in Veterinary Science 2013, 95 (1): 298-302
The possible use of serum amyloid A and haptoglobin (Hp) determination in saliva as stress markers in swine was investigated in this study. Firstly, a model of social isolation was followed. Significantly higher serum amyloid A concentrations were obtained in isolated animals (n=10) compared to grouped animals (n=10; P=0.036), in agreement with cortisol levels (P=0.015), while haptoglobin levels did not significantly change. Secondly, animals were subjected to short road transport. Cortisol and serum amyloid A levels significantly increased following road transport. Serum amyloid A levels were significantly high on arrival at the slaughterhouse and maximal at 30 and 60 min lairage (P<0.0001). Cortisol levels were only significantly elevated on arrival at the slaughterhouse (P<0.0001). These results indicate that salivary serum amyloid A (and not haptoglobin) determination is a potential biomarker for the assessment of complex stress in pigs, and that it has a more prolonged response than cortisol.


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