Blood parameters of goats in grazing on three physiological stages throughout the year

The objective of this study was to monitor the nutritional status of goats in three physiological stages in the four seasons of the year. The present work was carried out in Tlahualilo, Durango from August 2014 to July 2015. Blood samples were taken to determine the concentrations of glucose, cholesterol, total protein and urea nitrogen. The groups studied were goats in production (PROD), gestation (GES), and growing goats (DES), factor one, in winter, spring, summer, and autumn, factor two, in a completely random design with factorial arrangement. The lowest concentration of glucose was in the PROD group in winter with 45.81 mg dL(-1) (p < .05). DES with 57.71 mg dL(-1) had the lowest concentration of cholesterol in winter (p < .05). PROD with protein concentration 58.74 mg dL(-1) had the lowest average in winter (p < .05). Ureic nitrogen also showed the lowest values in winter (p < .05). The blood parameters were the lowest in winter.