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Hematological and biochemical reference intervals for <Emphasis Type="Italic">Bothrops asper</Emphasis> and <Emphasis Type="Italic">Crotalus simus</Emphasis> (Serpentes: Viperidae), maintained in captivity for venom extraction
Authors:Aarón Gómez  Cynthia Arroyo  Wilson Astorga  Danilo Chacón  Santos Rodríguez  Manuel Jiménez
Institution:1.Serpentario, Instituto Clodomiro Picado, Facultad de Microbiología,Universidad de Costa Rica,San José,Costa Rica;2.Departamento de Análisis Clínicos, Facultad de Microbiología,Universidad de Costa Rica,San José,Costa Rica
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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