Sex organ of birds








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They terminate at the seminal vesicles located in the cloaca wall. The tail portion of the bird should be out over the edge of the table or over the operator's knee so it can be bent downwards easily. For Chinese breeds of geese, the sexes are readily identifiable by the size of their knob, with those of mature males being larger, more prominent and associated with a larger head. Most other breeds of geese lack distinctive secondary sex characteristics and therefore to sex geese of these breeds it is necessary to examine their sex organs. For this reason an inexperienced sexer can easily mistake a male for a female if, after slight pressure, the phallus is not exposed. A good knowledge of the anatomy of these systems has allowed the development of a unique technique for semen collection and insemination adapted specifically to geese see section on Artificial Insemination.

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The Reproduction Of Ducks

A good knowledge of the anatomy of these systems has allowed the development of a unique technique for semen collection and insemination adapted specifically to geese see section on Artificial Insemination. Figure 14 shows how to hold a gosling, which is the same way to hold a duckling, so as to expose its reproductive organs. The egg white or albumen is then secreted primarily in the magnum. After a few weeks of age, these sex differences in down colour disappear, so sex identification of individual goslings must be done at hatching. When a mature oocyte is released on an ovulated yolk, it is picked up by the infundibulum where fertilisation occurs. Like most other birds, the female goose possesses a unique reproductive system located on the left side of its abdomen. Once copulation or insemination has taken place, the oviduct plays a role in spermatozoa storage.

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Reproductive system of a pigeon

They are highly vascularized and change in size and position according to whether the gander is sexually active or not. In some birds the male organ is somewhat difficult to unsheathe, particularly if the birds are either immature or not in semen production. This chapter begins with a description of the male and female reproductive systems followed by a section on sex determination. These there are two follow the urethras and transport the spermatozoa from the testicles and the epididymis to the copulatory organ. After a few weeks of age, these sex differences in down colour disappear, so sex identification of individual goslings must be done at hatching. They terminate at the seminal vesicles located in the cloaca wall.

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Description: For Chinese breeds of geese, the sexes are readily identifiable by the size of their knob, with those of mature males being larger, more prominent and associated with a larger head. Once copulation or insemination has taken place, the oviduct plays a role in spermatozoa storage. Most other breeds of geese lack distinctive secondary sex characteristics and therefore to sex geese of these breeds it is necessary to examine their sex organs. Figure 15 shows the male and female reproductive organs of goslings much enlarged. After a few weeks of age, these sex differences in down colour disappear, so sex identification of individual goslings must be done at hatching. When selecting geese for breeding, the sex of each goose must be determined. The egg white or albumen is then secreted primarily in the magnum. Male left and female right reproductive organs of day-old goslings much enlarged. The vas deferenes are the location of spermatozoa maturation and storage. Next, pressure is applied both directly below and to the side of the vent in order to expose the sex organ as shown in Figure
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