Abstract
The aim of this study was to evaluate the influence of seasons on the hematological profile in horses used for urban traction in the city of Lages, Brazil. Blood samples were collected of the twenty crossbreed horses used for urban traction in the city of Lages, Brazil, carried out in four different periods according to the seasons, for carrying out the hematological profile, plasma total protein (PTP) and plasma fibrinogen. PTP was determined by refractometry method and the determination of plasma fibrinogen by heat precipitation method. Climate variations, such as maximum and minimum temperature, relative humidity and rainfall index for each period were obtained through access to the Center of Environmental Resources Information and Hydrometeorology of Santa Catarina. All values found were within the reference values commonly used for equine specie. There was no significant difference throughout the seasons on the values of erythrogram, leukogram, neutrophil-lymphocyte ratio and PTP. The MCH and plasma fibrinogen were higher in summer and eosinophils had significantly higher values in winter followed by summer. The region of Lages presents marked seasonal fluctuations, and these have little influence on hematological characteristics in horses used for urban traction.
Highlights
The current literature brings information of different factors that can alter several physiological parameters in individuals, yet without having much clinicopathological validation for professionals (Paladino et al, 2014; Uluisik et al, 2013; Lacerda et al, 2006; Babeker et al, 2013)
The aim of this study was to evaluate the influence of seasons in hematological profile, total plasma protein and plasma fibrinogen in horses used for urban traction from Lages, SC, Brazil
The hematologic profile was analyzed by means of the red blood cell count (RBC) and white blood cell count (WBC), packet cell volume (PCV), hemoglobin (HGB), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), Archives of Veterinary Science, v.23, n.3, p
Summary
The current literature brings information of different factors that can alter several physiological parameters in individuals, yet without having much clinicopathological validation for professionals (Paladino et al, 2014; Uluisik et al, 2013; Lacerda et al, 2006; Babeker et al, 2013). Horses show great exercise capacity and cardiorespiratory efficiency, requiring competent hematopoietic tissue to adapt to the different demands of work, either in natural or artificial conditions This feature has great influence of factors inherent to the individual, especially genetic, clearly exposed in different breeds with different skills to work (McGowan, 2008). Several studies have sought to investigate the effect that seasonality could play in haematological characteristics in horses (Satué et al., 2011; Dmoch et al, 2008), donkeys (Zakari et al, 2015), tilapia (Jerônimo et al, 2011), cows (Casella et al, 2013), camels (Babeker et al, 2013), human athletes (Banfi et al, 2011), among others. The results of these studies were variable depending on the species and location, showing that the specificity is the most appropriate way for studies in this field
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