Resumen

DIAZ-ANAYA, Adriana M; ARIAS-GONZALEZ, Harold A; GARCIA-CORREDOR, Diego J  y  PULIDO-MEDELLIN, Martin O. Estimation of Hematocrit Packed Cell Volume and Hemoglobin with the Presence of Haemonchus sp. in Sheep of Oicatá, Colombia. Rev. Fac. Cienc. Vet. [online]. 2014, vol.55, n.1, pp.18-24. ISSN 0258-6576.

Haemonchosis caused by the abomasal nematode of ruminants, Haemonchus contortus, represents one of the biggest problems in sheep farming by its impact on production losses and cost of anthelmintic treatments. The aim of the present study was to determine the prevalence of Haemonchus sp. and the estimated values of the hematocrit (Hto) and hemoglobin (Hb) of sheep from the municipality of Oicatá, Colombia. A random sampling of 201 creole animals belonging to extensive farms was carried out. Individual fecal samples were analyzed by the method of concentration formol-ether and the Haemonchus sp. infection determined. Blood samples from the same animals were obtained from the cephalic vein in EDTA containing tubes. Four hematological parameters were estimated: haemoglobin (Hb), haematocrit (Hto), red blood cells count (RBC) and mean corpuscular volume (MCV). Results were analyzed with the statistical package SPSS18 with a level of statistical significance of p<0.05. A prevalence of 31.3% was found for Haemonchus sp. Only 6% of the animals showed Hto below normal values, while 6.5% had abnormal Hb values in the presence of the helminth. RBC presented normal values in the presence of the parasite. In this study no correlation was found between the presence of the parasite and the haematological parameters determined.

Palabras clave : Hematocrit; haemoglobin; Haemonchus contortus; morbidity; sheep; helminths; nematode infections; hematocrit; ambient conditions; Colombia.

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