First, early pregnancy. During this period, the embryos did not gain much weight and were fed as normal lactating cattle feed. Second, the second trimester. After 5 months of gestation, the fetus gains weight and must pay attention to protein and mineral supplements. Third, late pregnancy. During this period, the energy metabolism of dairy cows increases by 30-50%, and the need to maintain the fetus needs to be increased. It must be ensured that the fetus needs more nutrition. Gradually increase the amount of concentrate feed before labor, but the maximum amount of concentrate can not exceed 1% of the weight of the cow, supplement vitamin A and D, in order to increase the survival rate of yaks, reduce the incidence of placenta retention and postpartum paralysis. Do not feed frozen, stinky feed before wintering and drink cold, cold water in the winter to prevent accidents such as miscarriage and belching. Fourth, perinatal period. The perinatal period is 15 days before and after cow delivery. During this period, the body of the cow is relatively weak, digestive function and the birth canal have not been restored, and breast edema has not disappeared. To restore the health of dairy cows, premature milking should not be done. Three days after childbirth, high-quality hay and a small amount of bran-based mixture should be fed. About 15 days after childbirth, appetite, digestive function gradually recover, breast edema disappeared, the amount of concentrate feed can be gradually increased, and feed some juicy feed to increase milk production. Hematology analyzer is also called clinical blood cell analyzer, blood cell analyzer, blood cell analyzer, blood cell counter. The blood analyzer not only improves the accuracy of the experimental results, but also provides many experimental indicators, which play an important role in the diagnosis and differential diagnosis of diseases. Hematology analyzer is one of the most widely used instruments in hospital clinical testing. Automation in Hematology,Automated Hematology Analyzer,Hematology Analyzer Instrument,Hematology Analyzer Product Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com
Test items
Blood cell test refers to routine blood test, which is manual operation and counting under the microscope at first. It includes red blood cell, hemoglobin, white blood cell count and its classification, platelet count, etc. There are more than 20 items.
clinical significance
1. The blood analyzer is mainly used to detect various blood cell counts, white blood cell classification and hemoglobin content.
2. Hematocrit: obtained by multiplying the average volume of red blood cells by the red blood cell count.
3. Red blood cell distribution width: represents the degree of consistency of red blood cell size. When the red blood cell size is uneven, the red blood cell distribution width value increases, such as various types of nutritional deficiency anemia.
4. The three average indices of red blood cells are used to identify the type of anemia.
(1) The average hemoglobin content of red blood cells: increased in megaloblastic anemia, decreased in iron deficiency anemia, chronic blood loss anemia, uremia, chronic inflammation.
(2) Mean volume of red blood cells: increase in hemolytic anemia and megaloblastic anemia; decrease in severe iron deficiency anemia and hereditary spherocytosis.
(3) The average red blood cell hemoglobin concentration: decrease in chronic blood loss anemia, iron deficiency anemia; various diseases can be in the normal range. In megaloblastic anemia, the mean red blood cell volume increases, the mean red blood cell hemoglobin amount increases, the mean red blood cell hemoglobin concentration is normal, and the red blood cell distribution width increases.
5. Average platelet volume: the average volume of each platelet, the size of platelets is related to its function.
(1) Increased: seen in patients with idiopathic thrombocytopenic purpura, edema and proteinuria in late pregnancy.
(2) Decreased: seen in non-immune platelet destruction, aplastic anemia, thrombocytopenia repeated infection syndrome, chronic myeloid leukemia, etc.