Differences in catecholamine metabolism and behaviour in neonatal broiler and layer chicks

British Poultry Science
Shin SaitoM Furuse

Abstract

1. To clarify the difference in behavioural activities and catecholamine metabolism between layer and broiler-type chicks two experiments were conducted. 2. In experiment 1, 1-d-old male layer and broiler chicks were placed in an open-field area and their responses were investigated for 10 min. The responses of the two strains were remarkably different, with broilers being less active than layers. Vocalisations rapidly decreased in broilers whereas those of layers remained elevated during the 10 min. 3. In experiment 2, 1-d-old chicks of both strains were killed and brain catecholamine concentrations were determined in three parts of the brain: telencephalon, optic lobe and brain stem. 4. In the whole brain, dopamine (DA) and dihydroxyphenylacetic acid (DOPAC) were significantly higher in broilers. However, the values for norepinephrine (NE), epinephrine (E) and 4-hydroxy-3-methoxyphenylacetic acid (HVA) were similar between strains. The ratios of metabolite/precursor were also calculated: HVA/DOPAC was higher in layers, while NE/DA, E/NE and DOPAC/DA were not significantly different between strains. 5. These results suggest that behavioural activities differ greatly, while there are some differences in catecholamine metabolism...Continue Reading

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Citations

Feb 26, 2008·Animal Cognition·Rafael FreireWolfgang Wiltschko
Aug 11, 2006·The Journal of Endocrinology·Gideon HenMiriam Friedman-Einat
Feb 9, 2011·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Masaaki ToyomizuTaku Amo
Jan 26, 2010·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Sachiko KatayamaMitsuhiro Furuse
Apr 2, 2008·Pharmacology, Biochemistry, and Behavior·Shozo TomonagaMitsuhiro Furuse
Mar 10, 2007·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·H YonetaH Tazawa
Jul 3, 2015·Physiology & Behavior·Md Sakirul Islam KhanTetsuya Tachibana
Jun 28, 2005·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Shin SaitoMitsuhiro Furuse
Oct 22, 2017·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Sarah K G Sirsat, Edward M Dzialowski

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