Home
Resources
Publications
Tonic Immobility and heterophil/lymphocyte Responses of the Domestic Fowl to Corticosterone Infusion

Tonic Immobility and heterophil/lymphocyte Responses of the Domestic Fowl to Corticosterone Infusion

R B Jones, G Beuving, H J Blokhuis

Physiol Behav. 1988;42(3):249-53.

PMID: 3406152

Abstract:

The tonic immobility (TI) fear reactions, plasma corticosterone concentrations and heterophil/lymphocyte (H/L) ratios of adults laying hens were measured before and at intervals of 4 and 11 days after the subcutaneous implantation of osmotic minipumps delivering either corticosterone solution (15 micrograms/hr) or only polyethylene glycol vehicle. The dummy pumps exerted no apparent behavioral or endocrine effects, whereas tonic immobility was significantly prolonged and circulating corticosterone concentrations significantly elevated at 4 and 11 days after implantation of the corticosterone minipumps. H/L ratios were significantly elevated from pre-treatment levels in both groups. However, H/L ratios were considerably higher at both post-treatment points among birds receiving corticosterone rather than vehicle. The present findings suggest that chronic elevations of plasma corticosterone not only alter the haematological profile but may also predispose birds to react more fearfully to alarming stimulation.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP50226-B	Corticosterone solution		50-22-6	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: