Stress and General Adaptation Syndrome in Poultry

Faber, Hans von

doi:10.1079/wps19640025

Cited by 13 publications

(2 citation statements)

References 88 publications

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“…Total adrenal steroids, adrenal cholesterol, and circulating corticosterone levels were not altered significantly. Additionally, stressors such as feed and water deprivation have been reported to be immunosuppressive (von Faber, 1964). However, recrudescence of the thymus, a primary immune tissue, has been reported to occur during the autumnal molt in several avian species, including the Quelea (Kendall and Ward, 1974) and during a forced molt in SCWL hens (Brake et al, 1981).…”

Section: Introductionmentioning

confidence: 99%

Physiological Changes in Caged Layers During a Forced Molt

et al. 1982

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Packed cell volume and circulating leucocyte numbers in force-molted, Single Comb White Leghorn (SCWL) hens were examined. Two groups of SCWL hens, reared under commercial conditions, were subjected to force molting (FM) at 70 (Trial 2) and 72 weeks of age (Trial 1). The force molting procedure consisted of a reduced photoperiod (6 hr), feed removal for 12 days (Trials 1 and 2), and water withdrawal for 1 day (Trial 1 only). Cessation of egg production was achieved in 6 days. Control (CON) hens were maintained in each trial with no change in daylength, and feed and water were available ad libitum. The FM hens exhibited a significant increase in packed cell volume (PCV) from the time of feed removal until immediately prior to resumption of egg production. This effect was not associated with water deprivation. The FM hens exhibited numerically increased numbers of total leucocytes (TWBC) and monocytes throughout the nonlaying period. However, the increase was significant on Day 14 of both trials for TWBC and on Days 21 and 35 (Trial 1) and Days 14 and 48 (Trial 2) for monocytes. A significant eosinophilia was observed on Days 7 and 14 of both trials. Changes associated with lymphocytes, heterophils, and basophils were inconsistent. Lymphocytes were increased significantly in the FM hens of Trial 2 from Day 21 to Day 48, but no significant difference occurred in Trial 1. A heterophilia was exhibited by the FM hens of Trial 1 on Days 7 and 14, but not in Trial 2. Conversely, a significant basophilia was observed on Days 7 and 14 in Trial 2, but not in Trial 1. These data suggested that an increased PCV, eosinophilia, and possibly increased TWBC and monocyte numbers were associated with a forced molt in caged SCWL hens.

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Section: Introductionmentioning

confidence: 99%

Physiological Changes in Caged Layers During a Forced Molt

et al. 1982

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“…Captivity is stressful and some of the factors that could lead to stress include excess cold or heat, starvation overcrowding and restraint (Von Faber, 1964). Stress leads to the release of glucagon, adrenaline and non adrenaline in the circulatory system (Freeman, 1976).…”

Section: Introductionmentioning

confidence: 99%

THE EFFECT OF DISEASES ON FOOD CONSUMPTION AND WEIGHT GAIN IN CAPTIVE COMMON BUZZARDS (Buteo buteo)

C.P.

J.O.

O.O.

2016

Assiut Veterinary Medical Journal

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Disease conditions invariably affect the activities and physiology of common buzzards irrespective of whether they are non-infectious or infectious. The impact of these diseases is further compounded by the stress of captivity in rehabilitation facilities. The aim of the study is to relate weight gain and food consumption to disease conditions in common buzzard. Fifty common buzzards were studied in five batches of 10 birds at a time. The absolute quantity of meat consumed was recorded after taking cognizance of the moisture lost by evaporation. Birds with infectious, non-infectious and those with both non-infectious and infectious diseases on the average consumed 111.9g, 116.6g and 110.3g of food daily, while their weight gain was 18.8%, 12.2% and 17.6% respectively. There were only slight differences in the amount of food consumed and percentage weight gained by the 3 categories of birds.

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2002

Birds of Prey

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Stress and General Adaptation Syndrome in Poultry

Cited by 13 publications

References 88 publications

Physiological Changes in Caged Layers During a Forced Molt

Physiological Changes in Caged Layers During a Forced Molt

THE EFFECT OF DISEASES ON FOOD CONSUMPTION AND WEIGHT GAIN IN CAPTIVE COMMON BUZZARDS (Buteo buteo)

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