关键词: 比格犬, 血常规指标, 年龄, 性别

Abstract: Objective　To investigate the effect of age and sex on basal blood indicators of Beagle dogs. Methods　Blood samples were collected from Beagle dogs of both sexes during the juvenile (6-8 months), young adulthood (2-3 years), adulthood (4-5 years), and senior (8-9 years) stages. The blood cell analyzer was used to measure the white blood cell count, red blood cell count, hemoglobin content, hematocrit, mean corpuscular volume, red blood cell distribution width, mean corpuscular hemoglobin, and erythrocyte sedimentation rate in the blood. The result were statistically analyzed. Results　The test result showed that the number of lymphocytes in the blood of female dogs aged 6-8 months was significantly higher than that of male dogs and female dogs aged 8-9 years (P<0.05),and the red blood cell count and hemoglobin content were significantly lower than those of 4-5-year-old male dogs (P<0.05), and the erythrocyte sedimentation rate was significantly higher than that of 4-5-year-old and 8-9-year-old female dogs (P<0.05). The platelet count in the blood of 2-3-year-old young dogs was the lowest, and the erythrocyte sedimentation rate was significantly lower than that of 4-5-year-old and 8 9-year-old female dogs (P<0.05), but slightly higher than 6-8 months old younger dogs. The red blood cell count and hemoglobin content of 4-5-year-old male dogs were significantly higher than those of 6-8 month-old female dogs and 8-9-year-old female dogs (P<0.05), and the erythrocyte sedimentation rate was significantly lower than that of 4-5-year-old and 8-9-year-old female dogs (P<0.05), but slightly higher than 6-8 months old younger dogs of the same gender, There were no significant differences observed in other indicators.Conclusion　The result indicated that the young dogs could be used as experimental animals withoud significant concern for the impact of hematological parameters; when choosing juvenile beagles as animal models, attention should be paid to the influence of red blood cells, platelets, and erythrocyte sedimentation rate; old dogs, due to their lower white blood cell count, could be used for specific disease research, but the influence of high erythrocyte sedimentation rate should be noted.

Key words: Beagle dog, blood routine index, age, sex