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              Research 
(Published 
online: 08-08-2014) 
              5. 
              Influence of season, age and breed on prevalence of haemoprotozoan 
              diseases in cattle of Tamil Nadu, India 
              - R. Velusamy, N. 
              Rani, G. Ponnudurai, T. J. Harikrishnan, T. Anna, K. Arunachalam, 
              K. Senthilvel and P. AnbarasiVeterinary World, 7(8): 574-578
   
              
   
                
                
doi: 
              10.14202/vetworld.2014.574-578 
              
              
 
              
              R. Velusamy: Department of Veterinary Parasitology, Veterinary 
              College and Research Institute, Tamil Nadu Veterinary and Animal 
              Sciences University (TANUVAS), Namakkal - 637 002, Tamil Nadu, India; 
              velupara@yahoo.com
 
              
              N. Rani: Department of Veterinary Parasitology, Veterinary 
              College and Research Institute, Tamil Nadu Veterinary and Animal 
              Sciences University (TANUVAS), Namakkal - 637 002, Tamil Nadu, India; 
              ranivetpara@rediffmail.com
 
              
              G. Ponnudurai: Department of Veterinary Parasitology, 
              Veterinary College and Research Institute, Tamil Nadu Veterinary 
              and Animal Sciences University (TANUVAS), Namakkal - 637 002, 
              Tamil Nadu, India; Ponnuvet@gmail.com 
              
              T. J. Harikrishnan: Department of Veterinary Parasitology, 
              Veterinary College and Research Institute, Tamil Nadu Veterinary 
              and Animal Sciences University (TANUVAS), Namakkal - 637 002, 
              Tamil Nadu, India; tjkrish@rediffmail.com 
              
              T. Anna: Department of Veterinary Parasitology, Veterinary 
              College and Research Institute, Tamil Nadu Veterinary and Animal 
              Sciences University (TANUVAS), Namakkal - 637 002, Tamil Nadu, India; tanna@rediffmail.com
 
              
              K. Arunachalam: Department of Veterinary Parasitology, 
              Veterinary College and Research Institute, Tamil Nadu Veterinary 
              and Animal Sciences University (TANUVAS), Namakkal - 637 002, 
              Tamil Nadu, India; hemacha@rediffmail.com 
              
              K. Senthilvel: Department of Veterinary Parasitology, 
              Veterinary College and Research Institute, Tamil Nadu Veterinary 
              and Animal Sciences University (TANUVAS), Namakkal - 637 002, Tamil Nadu, India; 
              kansen@rediffmail.com
 
              
              P. Anbarasi: Department of Veterinary Parasitology, Veterinary 
              College and Research Institute, Tamil Nadu Veterinary and Animal 
              Sciences University (TANUVAS), Namakkal - 637 002, Tamil Nadu, India; 
              anbuvet@yahoo.com
 
              Received: 20-04-2014, Revised: 24-06-2014, Accepted: 01-07-2014, 
              Published online: 08-08-2014
 
                
              
              
              Corresponding author: R. Velusamy, email: velupara@yahoo.com, 
              Telephone: +91-9488957030. 
 
              Abstract 
 
              Aim: To assess the prevalence 
              of haemoprotozoan diseases in cross-bred and indigenous cattle in 
              relation to season, age and breed in Western part of Tamil Nadu, 
              India. Materials and Methods: A total of 2637 blood smears were 
              screened for haemoprotozoan diseases and samples were received 
              from the college hospital and veterinary dispensaries in Western 
              part of Tamil Nadu, India. Blood smears were stained using 
              Giemsa's technique and examined under oil immersion.
 Results: Microscopic examination of blood smears revealed 
              an overall prevalence of 16.64 %; of which theileriosis was 13 %, 
              followed by anaplasmosis 2.64 % and then babesiosis 1.0%. Among 
              the haemoprotozoan diseases, the prevalence of theileriosis was 
              significantly (p<0.05) high during summer (14.4%), followed by 
              moderate in monsoon (13.8%) and less in fair (11.5%) seasons. 
              However, there was no significant seasonal influence on the 
              prevalence of babesiosis and anaplasmosis. The data on influence 
              of breed revealed that there was a significantly (p<0.05) high 
              prevalence of haemoprotozoan diseases in Holstein Friesian (HF) 
              and Jersey cross breeds than indigenous breed and the occurrence 
              of these haemoprotozoan diseases was found to be high among the 
              age groups of 2-7 years in cross-bred animals and below 2 years in 
              indigenous animals.
 Conclusion: The present study suggests that Western part of 
              Tamil Nadu is highly endemic for theileriosis and occurrence of 
              the disease was high during summer. Cross-bred animals aged 2-7 
              years are highly susceptible to these haemoprotozoan diseases than 
              indigenous animals.
 Keywords: anaplasmosis, babesiosis, cattle, prevalence, 
              theilerisosis.
 
 
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