Observational study on variation of longitudinal platelet counts in calves over the first 14 days of life and reference intervals from cross-sectional platelet and leukocyte counts in dairy calves up to two months of age
| Autor: | Strous, Emma, Vanhoudt, Arne, Smolenaars, Anja, van Schaik, Gerdien, Schouten, Matthijs, de Pater, Henrik, Roelofs, Bjorn, Nielen, Mirjam, FAH veterinaire epidemiologie, FAH GZ herkauwer, dFAH AVR, Sub GZ Herkauwer, FAH Evidence based Veterinary Medicine |
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| Přispěvatelé: | FAH veterinaire epidemiologie, FAH GZ herkauwer, dFAH AVR, Sub GZ Herkauwer, FAH Evidence based Veterinary Medicine |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Platelets
lcsh:Veterinary medicine General Veterinary Postnatal increase business.industry animal diseases food and beverages Leukocyte Counts veterinary(all) Article Blood tube Reference intervals Reference interval fluids and secretions Animal science lcsh:Zoology Leukocytes lcsh:SF600-1100 Medicine Platelet Animal Science and Zoology lcsh:QL1-991 business Dairy calves |
| Zdroj: | Animals, 11(2), 1. Multidisciplinary Digital Publishing Institute (MDPI) Animals, Vol 11, Iss 347, p 347 (2021) Animals Volume 11 Issue 2 Animals : an Open Access Journal from MDPI |
| ISSN: | 2076-2615 |
| Popis: | Platelet and leukocyte count reference intervals (RIs) for cattle differ by age and while adult RIs are known, RIs for calves are studied less. The aims of this observational study are to evaluate variation of platelet counts of Holstein Friesian calves over the first 14 days of life and to propose RIs for platelet and leukocyte counts of Holstein Friesian calves aged 0&ndash 60 days. In a longitudinal study, 19 calves were blood sampled 17 times, in the first 14 days of their lives. Blood was collected in a citrate blood tube and platelet counts were determined. We assessed the course of platelet counts. In a field study, 457 healthy calves were blood sampled once. Blood was collected in an EDTA blood tube and platelet and leukocyte counts were determined. The RIs were calculated by the 2.5 and 97.5 percentiles. Platelet counts started to increase 24 h after birth (mean platelet count 381 × 109/L ± 138 × 109/L) and stabilized after five days (mean platelet count 642 × 265 × 109/L). In calves up to six days of age, platelet counts were lower than in calves older than five days. In conclusion, the RIs of platelet and leukocyte counts in calves were wider in range than the RIs for adult cattle, therefore, calf specific RIs for platelet and leukocyte counts should be used. From 6 until 60 days of age, we propose an RI for platelet counts of 287&ndash 1372 × 109/L and for the first 60 days of life an RI for leukocyte counts of 4.0&ndash 18.9 × 109/L. |
| Databáze: | OpenAIRE |
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