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Influence of shearing on oxidative stress and some physiological parameters in ewes
Author(s) -
PICCIONE Giuseppe,
FAZIO Francesco,
CASELLA Stefania,
PENNISI Pietro,
CAOLA Giovanni
Publication year - 2011
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/j.1740-0929.2010.00865.x
Subject(s) - venipuncture , oxidative stress , analysis of variance , shearing (physics) , chemistry , antioxidant capacity , zoology , repeated measures design , medicine , anesthesia , biology , materials science , mathematics , statistics , composite material
The aim of the present study was to evaluate the effect of shearing on physiological and oxidative stress parameters in ewes. Twenty Comisana ewes were used and divided into two groups. Ten ewes were left unshorn as a control group (Group A) and 10 ewes were shorn (Group B). All measurements were taken before and after shearing, and repeated 8 h after shearing and 1, 2, 3, 4, 5, 10 and 15 days after shearing. Reactive oxygen species (dROMs), antioxidant barrier (oxy‐adsorbent), thiol antioxidant barrier (SHp) and packed cell volume (PCV) were assessed in blood samples collected by means of jugular venipuncture. Rectal temperature (RT), respiratory rate (RR) and heart rate (HR) were also measured. Two‐way repeated measures analysis of variance (ANOVA), followed by Bonferroni's test, was used for the assessment of significant effects due to shearing and time. The statistical analysis showed significant increases ( P  < 0.01) of dROMs, oxy‐adsorbent, SHp, and a significant decrease ( P  < 0.01) of RT and RR associated with time and shearing. Our results indicate that shearing causes a change in the ewe's homeostatic balance that leads to oxidative stress.

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