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Heterophil to lymphocyte ratios during perinatal and neonatal stages in chickens |
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| Authors: | I Zulkifli P B Siegel |
| Institution: | Animal and Poultry Sciences Department , Virginia Polytechnic Institute and State University , Blacksburg, Virginia, 24061–0306, USA |
| Abstract: | 1. Heterophils (H) and lymphocytes (L) were measured in embryos that had pipped into the air cell and through the shell, and in chicks from 0‐d‐old to 8 d of age. 2. Numbers of lymphocytes in the perinatal stages were very low with H:L ratios greater than 5.0. 3. Posthatching H:L ratios decreased in a quadratic manner from 1.76 at hatch to 0.39 on day 8. |
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