Pituitary and Adrenal Function

Wilkinson, John S.

doi:10.1016/b978-0-12-396350-5.50016-4

Cited by 3 publications

(1 citation statement)

References 128 publications

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“…The elevated urea levels in the stressed animals may be explained by an increased catabolism of protein from cellular depots, probably muscle tissue. It is known that Cortisol exerts such a catabolic effect (Wilkinson 1980), and that skeletal muscle in several species such as the rat (Dahlberg et al 1980) and the pig (Snochowski et al 1981) contains specific glucocorticoid receptors mediating the hormone action. The finding of elevated Cortisol levels in the stressed animals further supports this assumption.…”

Section: Discussionmentioning

confidence: 99%

Management stress in reindeer

Rehbinder

1990

Ran

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Abstract:The general mechanism and biological effects of stress are dealt with. Investigations performed on semidomesticated reindeer concerning the stress response under different herding and management conditions are presented and discussed.The findings indicate that: Reindeer are susceptible to management stress and that their degree of tameness plays an important role in the development of stress lesions such as muscular and myocardial degeneration and abomasal haemorrhages, etc.The animals are not favoured by rests between events of stress exposure as the effects produced tend to be cumulative.Depletion of muscular glycogen stores, increased catabolism of muscular protein, muscular degeneration and increased blood-urea levels can not be excluded as a cause of an altered and bad taste of the meat, i.e. a bad meat quality.Thus prolonged and repeated manual handling and transportation of live animals should be avoided. The use of helicopters or other motor vehicles must be correlated to the tameness of the animals and to environmental conditions. Stress due to incorrect management methods may, by means of stress induced lesions, severly affect the productivity of reindeer.

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Section: Discussionmentioning

confidence: 99%

Management stress in reindeer

Rehbinder

1990

Ran

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Diurnal periodicity of plasma Cortisol and corticosterone in desert bighorn sheep demonstrated by radioimmunoassay

Turner¹

1984

Can. J. Zool.

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TURNER, J. C. 1984. Diurnal periodicity of plasma cortisol and corticosterone in desert bighorn sheep demonstrated by radioimmunoassay . Can. J. Zool. 62: [2659][2660][2661][2662][2663][2664][2665]. A sensitive and specific radioimmunoassay (RIA) for cortisol and corticosterone was validated for desert bighorn sheep (Ovis c-trnodensis c.remnobare.s) plasma. Statistical and physiological validation of assay accuracy, precision, sensitivity, and specificity demonstrated the RIA to be reliable. Coefficients for intra-and inter-assay variation were 1.20 and 2.35% for cortisol and 3.50 and 3.97% for corticosterone, respectively. Sensitivity was 3.3 and 4.9 pg for cortisol and corticosterone, respectively. A distinct diurnal rhythm in plasma cortisol and corticosterone synchronous with photoperiod was found in free-ranging and captive bighorn sheep. A significant difference ( P < 0.01) existed between the mean 24-h plasma cortisol concentration for captive (33.04 + 5.97 ng/mL) and free-ranging (49.20 + 8.17 ng/mL) bighorn. Corticosterone levels were not significantly distinct between captive and free-ranging bighorn. The mean scotophase cortisol concentration in free-ranging class 111 rams (60.97 + 3.21 ng/mL) was significantly greater ( P < 0.05) than the mean scotophase cortisol concentration (54.03 t 5.97 ng/mL) of the free. ranging group. Absence of group interactions in solitary rams may be sufficiently stressful so as to entrain increased plasma cortisol concentrations. TURNER, J . C. 1984. Diurnal periodicity of plasma cortisol and corticosterone in desert bighorn sheep demonstrated by radioimmunoassay . Can. J . Zool . 62: 2659 -2665. Des techniques radioimmunologiques sensibles et specifiques qui servent 2 I'analyse du cortisol et de la corticosterone plasmatiques ont i t @ essayees chez le mouflon bighorn (Ovis c-trntrdensis c-rrm~~ohtrrrs). L'exactitude, la precision, la sensibilite et la spkcificite de ces techniques ont ete approuvees statistiquement et physiologiquement. Les coefficients de variation intraet inter-analyses ont et@ ivalu@s a 1.20 et 2,35% dans le cas du cortisol et h 3.50 et 3.97% dans le cas de la corticostirone. La sensibilite est de 3.3 pg dans le cas du cortisol et de 4,9 pg dans le cas de la corticostirone. Le cortisol et la corticosterone plasmatiques suivent un rhythme diurne particulier associe h la photoperiode chez les mouflons libres et les moutlons gardes en captiviti. II existe une difference significative ( P < 0.01) entre les concentrations plasmatiques moyennes (evaluees sur 24 h) du cortisol des mouflons en captivite (33.04 t 5,97 ng/mL) et des moutlons libres (49.20 t 8.17 ng/mL). Les concentrations de corticosterone ne different pas significativement chez les deux groupes de moutlons. La concentration moyenne de cortisol de scotophase est significativement plus ilevie ( P < 0,051 chez les brebis libres de classe 111 (69,97 f 3.21 ng/mL) que chez les autres animaux libres. L'absence des interactions de groupe entraine suffisamment de stress chez les brebis solitaires pour...

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Effects of Different Anticoagulants on Determination of Erythrocyte Glutathione Peroxidase

Hussein

Jones

1981

Acta Vet Scand

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Effect of dif ferent anticoagulants on determination of erythrocyte glutathione peroxidase. Acta vet. scand. 1.981, .22, 472-479.-Glutathione peroxidase (GSH-Px) was determined in whole blood from cows, goats and horses using cumenehydroperoxide as substrate. Heparin was found to be the most suitable anticoagulant. The highest activities of GSH-Px were found with high concentrations of heparin in the blood samples (1000 and 1250 IV/ml of blood). Sodium fluoride and especially EDTA and sodium citrate gave lower activities of the enzyme. Storage of the blood samples at room temperature ("v 20 n C) or in a refrigerator ("v 5,0 C) for 3 days resulted in significantly lower activities of the enzyme, especially in horse blood.

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Pituitary and Adrenal Function

Cited by 3 publications

References 128 publications

Management stress in reindeer

Management stress in reindeer

Diurnal periodicity of plasma Cortisol and corticosterone in desert bighorn sheep demonstrated by radioimmunoassay

Effects of Different Anticoagulants on Determination of Erythrocyte Glutathione Peroxidase

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