Abstract
This study presents hematological and biochemical reference intervals (RIs) for two species of viper snakes (Bothrops asper and Crotalus simus), which are the first of their type particularly for these two species maintained in captivity and for extraction of venom purposes. A total of 77 snakes were used in developing the study; specifically 39 B. asper and 38 C. simus snakes. Blood samples were obtained by puncturing the caudal vein, and hematological tests were performed manually by two independent technicians. Plasma biochemistry parameters were determined by an automatized analyzer. There are hematological differences between wild-caught and captive B. asper in the percentage of heterophils (P < 0.001), while in captive and wild-caught C. simus, the differences are found in the percentage of eosinophils, lymphocytes, and monocytes (P < 0.001). Differences in glucose (P = 0.012), uric acid (P < 0.001), and cholinesterase (P = 0.004) are found in captive and wild-caught B. asper. Differences in albumin (P = 0.002), calcium (P < 0.001), CK (P = 0.04), and LDH (P = 0.037) are found between captive and wild-caught C. simus. This study constitutes the first set of hematological and biochemical RIs for B. asper and C. simus maintained in captivity with the purpose of producing antivenom in Costa Rica. The establishment of comprehensive RIs for hematology and plasma biochemistry for these two species of snakes is useful for interpretation of blood test results, moreover, to serving as a reference for viper snakes used for research purposes.
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Acknowledgments
The authors thank the continuous support of JM Gutiérrez, Y. Angulo, and G. León on the development of this work. This work was performed in partial fulfillment of the Master degree of A. Gomez at the University of Costa Rica.
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This work was financially supported by the Vicerrectoría de Investigación, University of Costa Rica, project 430-B3-702.
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The authors declare that they have no conflict of interest.
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All applicable national and institutional guidelines for the care and use of animals were followed. This study was approved by the Institutional Committee for the Care and Use of Laboratory Animals (CICUA) of the University of Costa Rica (No. Resolution 124, session 28/06/2012).
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All the authors agree with the content of this manuscript and all have significantly contributed to the performance of the study and the preparation of the manuscript. All authors have approved the final version of this manuscript.
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Gómez, A., Arroyo, C., Astorga, W. et al. Hematological and biochemical reference intervals for Bothrops asper and Crotalus simus (Serpentes: Viperidae), maintained in captivity for venom extraction. Comp Clin Pathol 25, 615–623 (2016). https://doi.org/10.1007/s00580-016-2240-2
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DOI: https://doi.org/10.1007/s00580-016-2240-2