By Mina C. G. Davies Morel

ISBN-10: 0851996434

ISBN-13: 9780851996431

This 2d version of a well-liked textbook offers a complete account of ways horses might be effectively bred. the purpose is to maximise productiveness and animal welfare. the 1st part concentrates on reproductive body structure and is geared toward offering a systematic realizing of copy within the mare and stallion. the second one part is extra utilized and demonstrates how this information can be utilized to optimize breeding and stud administration. This booklet is a confirmed good fortune as a textbook for measure and degree classes in equine stories. It has additionally proved to be an invaluable supplementary textual content for veterinary scholars, in addition to necessary for veterinary practitioners and stud managers.

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Sample text

1972). The presence or absence of these secretions within the vagina is also indicative of the stage of the oestrous cycle. It is often very hard to insert a vaginoscope into the vagina of a dioestrous mare, due to the thick, sticky nature of the secretions. 3. Variations in cyclic changes The mare is notorious for variations or abnormalities in her reproductive cycle. This is in contrast to other farm livestock, which have been specifically bred over time for their ability to reproduce rather than to perform athletically.

In the fetus, the testes descend from a position near the kidney, through the inguinal canal and into the scrotum at or soon after birth (Fig. 9). The failure of one or both testes to descend fully may not necessarily mean a stallion is infertile, as the testis within the body cavity may still produce sperm; sperm count, 23 however, is normally much reduced. A stallion with only one descended testis is termed a cryptorchid or rig. 3). The testes of the stallion normally lie with the long axis horizontal unless drawn up towards the body, when they may turn slightly.

5; Weber and Woods, 1993). 4. Conclusion The control of reproduction in the stallion is designed to ensure continual reproductive activity, rather than cyclic as in the mare. The only constraint on the stallion’s reproductive activity is season, a limitation that ensures that offspring are more likely to be born at a time of year most appropriate to their survival. 1. 2. 3. 4. 5. 6. 7. 1. 2. 3. 1. 2. 1. Introduction nearest the infundibulum, for the arrival of the sperm. It is unable to pass through the uterotubular junction until it has been fertilized.

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Equine reproductive physiology, breeding, and stud management by Mina C. G. Davies Morel

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