A girgadian rhythm of calcium intake in the domestic fowl

作者：B. O. Hughes · 发表于：British Poultry Science · 年份：1972 · DOI：10.1080/00071667208415976 · 被引用次数：57 · 研究领域：Animal Nutrition and Physiology、Livestock and Poultry Management、Animal Behavior and Welfare Studies

Synopsis Observations on the food and calcium intake of six laying hens indicate that when the opportunity is provided, the fowl can control these parameters independently. The results suggest that calcium intake is regulated on an hour‐to‐hour basis by the needs of egg formation and anticipates maximal calcium requirement. Detailed records obtained from a single bird in a Skinner box suggest that calcium intake is controlled by a response to ovulation. This could be either a hormonal or a neural response.