Effects of feather pecking phenotype (severe feather peckers, victims and non-peckers) on serotonergic and dopaminergic activity in four brain areas of laying hens (Gallus gallus domesticus)

One of the diseases that attacks poultry especially laying hens (Gallus gallus domesticus) is colibacillosis, a disease caused by Escherichia coli. E. coli is a bacterium that has opportunistic properties, which is normally present in the digestive tract in a controlled amount, but when the condition of the chicken decreases, it can develop into pathogens. Kidneys are organs that are vulnerable to substances that are toxic and are also susceptible to bacterial infections. This study aimed to determine the histological structure of kidneys of laying hens (Gallus gallus domesticus) who died due to the infection of E. coli. The research was conducted at a Pathology Laboratory (BBVet), Denpasar. The hen’s kidneys were processed with the paraffin method and Hematoxylin-Eosin staining. Cell damage that occurs is observed by using the Image Raster application. The data obtained were analyzed with the scoring method. Renal histopathology parameters can be seen in the form of degeneration, necrosis, congestion, and inflammatory cell infiltration. The results obtained cell damages namely 46% of degeneration, 60% of necrosis, 44% of congestion and 76% of inflammatory cell infiltration.

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Influence of Ascaridia galli infections and anthelmintic treatments on the behaviour and social ranks of laying hens (Gallus gallus domesticus)

Veterinary Parasitology ◽

10.1016/j.vetpar.2007.03.005 ◽

2007 ◽

Vol 146 (3-4) ◽

pp. 271-280 ◽

Cited By ~ 34

Author(s):

M. Gauly ◽

C. Duss ◽

G. Erhardt

Keyword(s):

Laying Hens ◽

Gallus Gallus ◽

Gallus Domesticus ◽

Gallus Gallus Domesticus ◽

Ascaridia Galli

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Utilization of egg-laying hens (Gallus Gallus domesticus) for production of ingredients for human consumption and animal feed

BMC Biotechnology ◽

10.1186/s12896-020-00618-x ◽

2020 ◽

Vol 20 (1) ◽

Author(s):

Veronica Hjellnes ◽

Rasa Šližyte ◽

Turid Rustad ◽

Ana Karina Carvajal ◽

Kirsti Greiff

Keyword(s):

Laying Hens ◽

Animal Feed ◽

Gallus Gallus ◽

Egg Laying ◽

Gallus Domesticus ◽

Human Consumption ◽

Gallus Gallus Domesticus

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Influence ofDermanyssus gallinaeandAscaridia galliinfections on behaviour and health of laying hens (Gallus gallus domesticus)

British Poultry Science ◽

10.1080/00071660400023839 ◽

2005 ◽

Vol 46 (1) ◽

pp. 26-34 ◽

Cited By ~ 103

Author(s):

O. Kilpinen ◽

A. Roepstorff ◽

A. Permin ◽

G. Nørgaard-Nielsen ◽

L.G. Lawson ◽

...

Keyword(s):

Laying Hens ◽

Gallus Gallus ◽

Gallus Domesticus ◽

Gallus Gallus Domesticus

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Plasma Serotonin in Laying Hens (Gallus gallus domesticus) With and Without Foot pad Dermatitis

International Journal of Tryptophan Research ◽

10.1177/1178646920927380 ◽

2020 ◽

Vol 13 ◽

pp. 117864692092738

Author(s):

Daniela Alberghina ◽

Vito Biondi ◽

Annamaria Passantino ◽

Fabiola Giunta ◽

Michele Panzera

Keyword(s):

Laying Hens ◽

Gallus Gallus ◽

Gallus Domesticus ◽

Gallus Gallus Domesticus ◽

Healthy Individuals ◽

Foot Pad ◽

Plasma Serotonin

The aim of this study was to investigate whether plasma serotonin (5-hydroxytryptamine [5-HT]) was associated with the presence of foot pad dermatitis (FPD) in laying hens. FPD birds (n = 20) and healthy individuals (n = 22) were included. Plasma 5-HT was investigated. FPD laying hens showed significantly higher 5-HT levels (median = 6 µmol/L) compared with healthy individuals (median = 4.28 µmol/L, P < .001). When present, FPD were scored as either 1 (n = 12) indicating mildly to moderately abnormal or 2 indicating severely abnormal (n = 8). The subjects whose lesions scored 2 had higher plasma 5-HT levels than those whose lesions scored 1. Inflammatory mechanisms seem to be related to plasma 5-HT levels in laying hens. Assessing plasma 5-HT could be useful to evaluate chicken welfare.

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