Journal of Animal and Plant Sciences
J. Anim. Plant Sci. [ISSN 2071 - 7024]
Volume 22(1): 3379 - 3387. Published June, 2014.
Study of basic haematological parameters: indicators of the general state and immune competence in the male grasscutter (Thryonomys swinderianus, Temminck, 1827) bred in captivity in Côte d'Ivoire
SORO Dofara1, KARAMOKO Yahaya1 KIMSE Moussa1, FANTODJI Agathe1
1University Nangui Abrogoua (Former-University of Abobo-Adjamé),
Faculty of Natural Sciences. Laboratory of Animal Biology and Cytology,
02 BP 801 Abidjan 02, Côte d'Ivoire.
Correspondence: SORO Dofara, Laboratory of Animal
Biology and Cytology, 02 BP 801 Abidjan 02, Tel: (225) 05190199, (225)
58864214
dofarasoro@yahoo.fr, (dofarasoro@yahoo.fr) (y.karamoko@gmail.com), (kimsey_m@yahoo.fr), (agatfa1947@gmail.com)
Key words: Grasscutter of breeding, in captivity, haematological parameters, Côte d'Ivoire
1 SUMMARY
The study of basic haematological parameters as indicators of the
general state and immune competence in the male grasscutter (Thryonomys
swinderianus, Temminck, 1827) bred in captivity was conducted. The
study included 720 male grasscutter divided into three age groups
(young, young adults and adults grasscutter) of 240 animals each. A
sample of 5 ml of blood per animal fasting is collected in a tube
containing an anticoagulant. The sample is analyzed using an automated
haematology analyzer.
The explored parameters are: Hematocrit (HCT), hemoglobin (HB),
red blood cell count (RBC), Red cell Distribution Width (RDW), Mean
corpuscular volume (MCV), Mean Corpuscular Hemoglobin (MCH), Mean
Corpuscular Hemoglobin Concentration (MCHC), the number of white blood
cells (WBC), the percentage of neutrophils (Neu), eosinophils (Eos),
basophils (Bas), lymphocytes (Lym), monocytes (Mon) and the platelets
count (PLT). With the exception of the index distribution of red blood
cells, mean corpuscular hemoglobin content, the number of white blood
cells, the percentage of lymphocytes and monocytes, all other
parameters have shown a strong individual variability. Significant
correlations were present between RBC, HB, HCT, MCV, MCHC, PLT, Neu,
Eos, Bas and the age of the grasscutter. Blood of the grasscutter was
characterized by a significantly high platelet count (P˂ 0.05) very
high (876±52 106/L) in adults. However, there is a very small amount of
red blood cells (5.3 ± 0.6 1012/μL) in the young grasscutters. The rate
of lymphocytes was very high in grasscutters of all ages (80.6 ± 3.6%
in younger and 84.1 ± 7.5 in adults).
These results show that there is a physiological anaemia
(erythrocytopenia) marked in young grasscutter. The excessive
production of platelets and lymphocytes respectively characterized
physiological thrombocytosis and leukocyte reversed in grasscutter.
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