Seasonal variations in blood parameters of the Amazonian manatee, Trichechus inunguis

Brazilian Archives of Biology and Technology

Elton P. Colares¹  Ioni G. Colares¹  Adalto Bianchini¹  Euclydes A. Santos¹ 

[1] ,Fundação Universidade do Rio Grande Departamento de Ciências Fisiológicas Laboratório de ZoofisiologiaRio Grande RS ,Brazil

关键词: Amazonian manatee;    Trichechus;    blood biochemistry;    nutrition;    Amazon;   

DOI  :  10.1590/S1516-89132000000200005

来源: SciELO

【 摘 要 】

Seasonal variations in body weight, food consumption and blood glucose, total lipids, urea, total proteins, albumin and globulins of captive Amazonian manatees, Trichechus inunguis, were determined. Body weight changed significantly along the year, increasing from autumn to spring and decreasing in summer. The mean daily food intake of paragrass remained almost unchanged along the year. Paragrass administered to the manatees showed important variations in crude protein and lipid content along the year. No significant differences in blood parameters were registered between males and females in all seasons. Further, there were no significant differences in blood total proteins, albumin and globulins along the year. On the other hand, significant differences in the mean blood glucose, lipids and urea were registered. An increase in the blood glucose in the spring and summer was observed. Blood urea and lipids levels were positively related to paragrass protein and lipids content. These two correlations suggested that these blood parameters are good indicators of the animal nutritional status in the Amazonian manatee.

【 授权许可】

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