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Volume 54, issue 4
Arch. Anim. Breed., 54, 399–405, 2011
https://doi.org/10.5194/aab-54-399-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
Arch. Anim. Breed., 54, 399–405, 2011
https://doi.org/10.5194/aab-54-399-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

  10 Oct 2011

10 Oct 2011

Seasonal variations of the serum proteins in sheep and goats (Short Communication)

G. Piccione, V. Messina, C. Giannetto, S. Casella, A. Assenza, and F. Fazio G. Piccione et al.
  • Department of Experimental Sciences and Applied Biotechnology. Faculty of Veterinary Medicine. Polo Universitario Annunziata, University of Messina, Messina, Italy

Abstract. The aim of this study was to assess the seasonal trend of the serum protein content of sheep and goats. The tested animals were six female goats (Maltese breed) and six female sheep (Valle del Belice breed). All animals were clinically healthy and not pregnant or lactating before or during the study. On blood samples, collected through an external jugular venipuncture every 30 days for 12 months, electrophoresis was performed using a semiautomated AGE system and then electrophoretic curves with the relative protein concentrations were analyzed. One way for repeated measure analysis of variance (ANOVA) was applied to determine the effect of time and by means of cosinor rythmometry, mesor (mean level), amplitude (half the range of oscillation) and acrophase (Φ, time of peak) were determined. The results showed a seasonal rhythm on Albumin and Alumin/Globulin ratio for sheep and goats, with different acrophases, winter for goats and spring for sheep. A seasonal rhythm was shown also in Alpha 2 globulins by sheep and in Beta globulins by goats. The difference in the acrophase can be attributed to a different production pattern of melatonin in goat, so the liver production of albumin is major during the winter that has a longer scotophase.

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