Differential leucocyte responses to various degrees of food restriction in broilers, turkeys and ducks
| Autor: | Graeme Robertson, M.H. Maxwell, Paul Hocking |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Male
Veterinary medicine Turkeys Lymphocyte Biology Basophil Body weight Leukocyte Count Animal science White blood cell medicine Leukocytes Animals digestive oral and skin physiology Body Weight Broiler General Medicine medicine.disease Food restriction medicine.anatomical_structure Basophilia Ducks Animal Science and Zoology Female Food Deprivation Chickens Food Science |
| Zdroj: | British poultry science. 33(1) |
| ISSN: | 0007-1668 |
| Popis: | 1. White blood cell responses of broilers, turkeys and ducks were examined at regular intervals after being subjected to various degrees of food restriction. 2. Restricted-fed broilers showed increases in heterophil and basophil numbers, together with a corresponding decrease in lymphocytes. The heterophil/lymphocyte ratio was raised. There were no differences between broiler strains. 3. After only one week of feeding restricted diets, heterophils were significantly raised in selected and unselected 2-week-old ducks. At 21 weeks of age, those ducks receiving 50% of food required to achieve their ad libitum-fed body weight had raised heterophils. 4. Ducks receiving food to achieve 25% of ad libitum-fed birds produced a marked basophilia, but no heterophilia. 5. After two weeks of food restriction, turkeys responded with significant heterophil/lymphocyte ratios following two degrees of restricted feeding. 6. It was concluded that in some poultry, a heterophilia may be the response to mild to moderate stress but a basophilia may result after severely stressing birds. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|