Effects of induced moulting on immune responses of hens
| Autor: | Holt Ps |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
medicine.medical_specialty
Period (gene) Biology Delayed-Type Hypersensitivity Response Graft vs Host Reaction Leukocyte Count Immune system Antigen Dinitrofluorobenzene Stress Physiological Immunity Internal medicine medicine Animals Hypersensitivity Delayed Lymphocytes Poultry Diseases Immunity Cellular General Medicine Endocrinology Antibody Formation Female Animal Science and Zoology Flock Food Deprivation Chickens Moulting Food Science |
| Zdroj: | British Poultry Science. 33:165-175 |
| ISSN: | 1466-1799 0007-1668 |
| DOI: | 10.1080/00071669208417454 |
| Popis: | 1. The potential for induced moult to be a stressor and therefore alter the immune response in hens was examined. Spent hens from White Leghorn and White Rock layer flocks were induced into a moult by withdrawal of food and the effects on the humoral and cellular immune responses of these birds were examined. 2. Lymphocyte numbers were lower in moulted birds compared with nonmoulted controls. 3. Antibody responses to sheep red blood cells or Brucella abortus antigen were largely unaffected. 4. The delayed type hypersensitivity response to the skin sensitiser dinitrofluorobenzene (DNFB) was depressed during the period of food withdrawal but recovered when feeding resumed. 5. Induced moulting probably has a negative effect on the cellular component of the immune system of the moulted birds. |
| Databáze: | OpenAIRE |
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