PMID: 1194826Oct 1, 1975Paper

Effects of ovarian steroids and prolactin on the sequential development of nesting behaviour in female budgerigars

The Journal of Endocrinology
R E Hutchison

Abstract

As intact, breeding female budgerigars approach egg-laying, they spend an increasing amount of time in the nestbox and nest hollow. The brood patch area begins to defeather and becomes vascular and the oviduct increases in weight. Precursory albumen forms in the tubular glands of the oviduct. Oestradiol (OB) treatment in combination with prolactin (OB+PL) induced ovariectomized budgerigars to display nesting behaviour which did not differ from that shown by intact females in the 3 days immediately preceding egg-laying. In contrast, OB induced only the initial phase of the nesting sequence and the effects of OB in combination with progesterone (OB+PR) were intermediate between treatments with OB alone and OB+PL. Incubation of artificial eggs occurred only in the OB+PL group and the latency to display of the incubation posture was shorter in the OB+PL group than in the OB+PR group. No incubation posture was displayed by the OB-treated group. Oviduct development was not influenced by prolactin, but progesterone induced precocious development of tubular glands in the magnum region of the oviduct. Treatment with OB+PR induced uniform development of precursor albumen in the tubular glands. Development of the brood patch occurred with...Continue Reading

Citations

Aug 1, 1991·Physiology & Behavior·C M BookR L Kitchell
Dec 17, 1998·Physiology & Behavior·G LeboucherM Kreutzer
Dec 1, 1982·Thorax·K M Taylor
Jan 1, 2008·The Veterinary Clinics of North America. Exotic Animal Practice·Christoph Mans, W Michael Taylor
May 14, 2005·Annals of the New York Academy of Sciences·Tatsuya SakamotoWaichiro Godo
Jan 1, 1986·Annals of the New York Academy of Sciences·J D Buntin
Dec 7, 2020·Behavioural Brain Research·Melissa Burns-CusatoSierra Panting

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