title: [Reference values of hemoglobin content, the hematocrit and mean concentration of corpuscular hemoglobin in rearing calves without iron substitution. 2. Dependence on live weight and age].
abstract: The hamoglobin content (Hb), the hematocrit (Hc) resp. the mean corpuscular hemoglobin concentration (MCHC) were determined resp. calculated of the blood samples (1 to 6 per animal) taken from 491 rearing calves during the first 23 weeks of their lives. Hb, Hc and MCHC were graphed as arithmetic means with standard deviation, as quartiles and as frequency distributions on an interval scale in dependence on live weight (20 ... 160 kg) resp. age (1 ... 161 days). It follows that the period of development from birth up to 28 days of keeping in the weaning area of the rearing farm, up to an age of 63 days resp. a live weight of 80 kg must, under the reference conditions, be considered the minimal period in which the supply of iron covering the needs by iron intervention in the whole stock of calves seems advisable.
mesh_terms: D000367:Age Factors; D000747:Anemia, Hypochromic / Q000453:epidemiology / Q000662:veterinary; D000818:Animals; D000833:Animals, Suckling; D001835:Body Weight; D002417:Cattle / Q000097:blood*; D002418:Cattle Diseases / Q000453:epidemiology; D004909:Erythrocyte Indices / Q000662:veterinary*; D006400:Hematocrit / Q000662:veterinary*; D006454:Hemoglobins / Q000032:analysis*; D007501:Iron / Q000008:administration & dosage*; D009751:Nutritional Requirements; D012016:Reference Values
chemical_list: D006454:Hemoglobins; D007501:Iron
vernacular_title: Referenzwerte des Hämoglobingehalts, des Hämatokrits und der mittleren korpuskulären Hämoglobinkonzentration bei Aufzuchtkälbern ohne Eisensubstitution.