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A pre- and postpartum study of selected biochemical parameters in ewes for the early detection of pregnancy toxemia

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N. ROUBIES (Ν. ΡΟΥΜΠΙΕΣ), Z. S. POLIZOPOULOU (Ζ.Σ. ΠΟΛΥΖΟΠΟΥΛΟΥ), A. MINAS (Α. ΜΗΝΑΣ), A. PAPASTERIADIS (ΑΧ. ΠΑΠΑΣΤΕΡΙΑΔΗΣ)
N. ROUBIES (Ν. ΡΟΥΜΠΙΕΣ), Z. S. POLIZOPOULOU (Ζ.Σ. ΠΟΛΥΖΟΠΟΥΛΟΥ), A. MINAS (Α. ΜΗΝΑΣ), A. PAPASTERIADIS (ΑΧ. ΠΑΠΑΣΤΕΡΙΑΔΗΣ)

Abstract


A field investigation on the incidence of subclinical ovine ketosis was performed in two large sheep flocks in an agricultural region of central Greece. Sixty - four animals were allocated in 2 study groups: group C, consisted of 29 non-pregnant females and group S of 35 end-term pregnant ewes. The trial lasted 6 weeks, including the immediate pre- and postpartal period. Blood samples were collected on weekly intervals and used for determining the concentrations of ß-hydroxybutyrate (BHB), acetoacetate (AcAc), glucose, total (TB) and conjugated (CB) bilirubin, calcium (Ca), inorganic phosphorus (P), sodium (Na), potassium (K), magnesium (Mg) and the activity of sorbitol dehydrogenase (SDH) and γ-glutamyl transferase (yGT). All the animals remained clinically healthy throughout the trial and parturition was uneventful. Eighteen group S ewes (51.4%) delivered 1 lamb, 12 (34,3%) twins, 4 (11.4%) triplets and 1 (2.9%) 4 lambs. Although the overall evaluation of the biochemical analysis did not support the existence of subclinical ketosis, blood glucose remained significantly lower (P<0.05) in group S sheep, with its lowest value (2.3±0.34 mmol/1) recorded 1 week prior to parturition. Sporadic cases of subclinical hyperketonemia may occur, despite optimal flock management.


Keywords


Biochemical changes; subclinical hyperketonemia; sheep; pregnancy

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Copyright (c) 2017 N. ROUBIES (Ν. ΡΟΥΜΠΙΕΣ), Z. S. POLIZOPOULOU (Ζ.Σ. ΠΟΛΥΖΟΠΟΥΛΟΥ), A. MINAS (Α. ΜΗΝΑΣ), A. PAPASTERIADIS (ΑΧ. ΠΑΠΑΣΤΕΡΙΑΔΗΣ)