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SUMMARYThe pineal hormone melatonin is primarily secreted during the darker periods of the day. It conveys the light/dark information to the different organs of the body. The various physiological functions and benefits of melatonin in chicken are reviewed. The implications of melatonin on laying performance, intestinal amino acid transport, small intestinal mucosa renewal, interaction with other hormones, fertility, thermoregulatory mechanisms, bone and eggshell properties, oxidative damage, inflammation, cytokines, biochemical markers, and broiler chicken development performance are discussed. The light wavelength and duration of exposure influences the expression of melatonin receptors through which the growth and reproduction of the birds are modulated. The production potential of commercial chicken can be enhanced by judicial manipulation of melatonin levels.
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Shanmugam et al. (2025) studied this question.
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