Abstract
The ranges and mean values of haematocrit, leucocrit, red cell, white cell and differential cell counts and serum protein concentration of young growing Pseudoplatystoma corruscans (n=6) were measured, and serum electrophoretic patterns on cellulose acetate described. Blood was obtained by puncture of the caudal vessels. Using routine staining methods, five different cell types could be distinguished by light microscopy. Mean total cell count was 1.29 x 106 cells.ml-1, while mean plasma protein content was 11.82g.l-1 consisting of five major protein fractions. These haematological characteristics were established as a “working document” upon which to base more extensive studies.
Highlights
IntroductionValores sangüíneos de pintados juvenis, Pseudoplatystoma corruscans (Agassiz, 1829)
The Hct and Lct values of this study agree with those found in other research on fish blood (Hattingh, 1972, McCarthy et al, 1973 and 1975, Schippers et al, 1994)
The relative abundance of the different peripheral blood cells showed a predominance of old lymphocytes which is consistent with that reported for other species (Boon et al, 1990b, Peutz et al, 1996, Schippers et al, 1994)
Summary
Valores sangüíneos de pintados juvenis, Pseudoplatystoma corruscans (Agassiz, 1829). A média das células sangüíneas totais foi de 1.29 x 106 células.ml-1, enquanto que a concentração protéica média do plasma sangüíneo foi 11.82g.l-1, constituindo-se de cinco frações principais. There are different health monitoring programmes in domestic farm animals using blood parameters to assess animal health. Sometimes it is a key for diseases diagnosis, but mostly the results of haematological investigations allows for acceptance or rejection of a possible diagnosis. The objectives of the present study are to describe the normal morphology of the cellular blood components and to establish values of a selected number of cellular and humoral blood parameters of the pintado, Pseudoplatystoma corruscans (Agassiz, 1829), which are lacking. At present several studies are undertaken to generate information about this animal to provide a sound basis for establishing the Pintado as a «cultivable species»
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