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  • Title: Erythrocytic parameters as indicators for differentiating between the pregnant and pseudopregnant bitches in Nigeria.
    Author: Ajala OO, Fayemi OO, Kolawole TO.
    Journal: Niger J Physiol Sci; 2011 Nov 23; 26(1):19-22. PubMed ID: 22314981.
    Abstract:
    The erythrocytic parameters during pregnancy and pseudopregnancy in bitches were studied and compared in 8 bitches aged 2 -3 years and weighing 10-12 kg. Blood samples were collected from the bitches before mating, during the three trimesters of pregnancy and the post partum period. The packed cell volume (PCV %), haemoglobin concentration (Hb gm/dl), red blood cell count(x10(6)/µl) were determined using standard methods. The mean corpuscular volume (MCV) and mean corpuscular haemoglobin concentration (MCHC) were then calculated. Six of the bitches were pregnant and 2 were pseudopregnant. The results showed that in pregnant bitches, the PCV decreased significantly from the premating values of 51.37+0.94% to 34.00+8.04% during the third trimester of pregnancy (P<0.05). There was also a significant decrease in Hb values (P<0.05) from the premating period (16.30 ± 0.20gm/dl) to the third trimester of pregnancy (11.25±1.80gm/dl). The values of Red blood cells (RBCx10(6)/μl) during the premating period (12.70+3.15) were not significantly different from the values during the first second and third trimesters (11.13+3.87, 10.38+4.54 and 12.24+3.15, respectively). The trend of decrease in PCV and Hb values were not observed in the bitches with pseudopregnancy. This shows that these erythrocytic parameters can be used to detect and differentiate between pregnancy and pseudopregnancy in bitches as early as the first 20 days post mating.
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