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OJVRTM
Online Journal of Veterinary Research©
(Including Medical and Laboratory Research)
Established 1994
ISSN 1328-925X
Volume 30 (9): 558-566, 2026.
Associations between age and reproduction with blood biochemistry in
Arabian mares.
Meliani Samia, Benallou Bouabdellah, Naceri Abdelkarim, Halbouche Miloud.
Veterinary institute, University of Tiaret, National Haras of Chaouchaoua, Agronomic Faculty, Mostaganem
University. Algeria
ABSTRACT
Samia M, Bouabdellah B, Abdelkarim N, Miloud H., Associations between age and reproduction with
blood biochemistry in Arabian mares. Onl J Vet Res., 30 (9): 558-566, 2026. We report effect of age and
reproduction cycle on serum biochemistry in forty four 2 to 25 year pure bred
old Arabian mares over 12 months. Mating, pregnancy, foaling and estrus were
confirmed visually and ovarian follicles by ultrasound. Jugular blood was
collected before feeding for serum sodium, magnesium, phosphorus, potassium,
calcium, glucose, triglycerides, total protein, plasma sodium and potassium. Compared
with other mares we found serum calcium was ~11% higher (P < 0.0005) in
infertile ones, but phosphorus ~80% lower (P < 0.05), but no effect on magnesium.
In infertile mares, serum sodium was ~129 but only 135 in Fillie,
and 136 mmol/L after foaling.
Mean plasma potassium reached 4.14 in late pregnancy and 3.16
mmol/L after foaling. Serum glucose reached 6.8
in pregnant horses, infertile and estrus ~7.1 mmol/L.
Serum triglycerides 1.37 in pregnant mares but only 0.72 in fillies and 0.54 and
0.79 in estrus and 0.587 mmol/L
after foaling (P < 0.05). We found no effect of age. Results suggest reproductive
status affected serum biochemistry but age only had a slight influence.
Keywords:
Arabian Mares, serum macro-minerals, calcium, glucose, reproduction.
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