Effects of Serotonin on the Food Intake in Chickens in the Early Post-hatching Period

  • Baranyiová E
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Abstract

Baranyiova Eva: Effects of Serotonin on the Food Intake in Chickens in the Post-Hatching Period. Acta vet. Brno, 59, 1990: 23-33. The effect of serotonin (5-HT) on food intake in the post-hatching period was studied in 360 Hybro broilers from 1 to 25 days of age in 3 experimental series. They were reared in batteries and had free access to food and water. The experimental chic-kens (4 groups of 10 or 20 birds) were each intraperitoneally given single doses of 1 or 2 mg 5-HT (Sigma Corp., USA), four groups were sham-injected with saline, and four groups were left untreated. The food intake of experimental and control groups was measured 30 and 60 min post injection and then at 1-h intervals till 1400 h. Cumulative food intake for the interval 0700 to 1400 h and per 24 h was also recorded. The 5-HT administration did not affect the food intake of chickens 1 and 2 days of age. On day 3, however, the birds began to respond to 5-HT administration in that its higher dose stopped eating in the first post-injection hour, the lower dose (1 mg . kg-I) suppressed it significantly as compared to sham-injected (P < 0.01) and intact con-trols (P < 0.02). The food intake of experimental chickens at all other ages under

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Baranyiová, E. (1990). Effects of Serotonin on the Food Intake in Chickens in the Early Post-hatching Period. Acta Veterinaria Brno, 59(1–2), 23–33. https://doi.org/10.2754/avb199059010023

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