Cryoconservation of avian gonads in Canada
نویسندگان
چکیده
منابع مشابه
Cryoconservation of Animal Genetic Resources
FA O C ry o co n se rv a io n o f a n im a l g e n e ic re so u ce s The Global Plan of Action for Animal Genetic Resources, adopted in 2007, is the first internationally agreed framework for the management of biodiversity in the livestock sector. It calls for the development of technical guidelines to support countries in their implementation efforts. Guidelines on the Preparation of national ...
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This is a survey of the work intended to contribute to our knowledge of normal gonadal sex differentiation in birds and mammals. Special attention has been given to the fate of germ cells in a foreign environment. The original work was undertaken to support the concept of a meiosis-inducing substance. Gonads were combined in heterosexual pairs and grown in organ culture. Homoplastic, heteroplas...
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FORMATION OF THE AVIAN GONADS AND REPRODUCTIVE ANATOMY The avian gonads arise from more than one embryonic source. The medulla or core arises from the mesonephric ducts. The outer cortex arises from a thickening of peritoneum along the root of the dorsal mesentery within the primitive gonadal ridge. Mesodermal germ cells that arise from yolk-sac endoderm migrate into this gonadal ridge, forming...
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Radioiodinated human FSH (‘?-hFSH) was used to study the specificity of the gonadotropin binding sites of various reptilian, avian, and mammalian gonadal tissues by examining competitive interactions with several nonmammalian gonadotropins. All preparations of nonmammalian gonadotropins showed some activity in these radioligand assays, but wide variations in activities were evident depending on...
متن کاملEarly sequential development in avian gonads. An ultrastructural study using selective glycogen labeling in the germ cells.
The early development of chick embryo gonads was studied by light and transmission electron microscopy and by cytochemical detection of glycogen in primordial germ cells (PGC's). The sequential events are presented from day 2 to day 5 (stages 14 to 27), together with the ultrastructural characteristics of the various cell populations. This study attempts to contribute data on the controversial ...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 2013
ISSN: 0032-5791
DOI: 10.3382/ps.2013-03185