reproductive organs and semen of the boar
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reproductive organs and semen of the boar by James Carlton Miller

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Published in [Columbia, Mo .
Written in English


  • Generative organs, Male.,
  • Semen.,
  • Swine.

Book details:

Edition Notes

Statementby James Carlton Miller.
ContributionsMcKenzie, Fred F. 1900- joint author., Bauguess, L. C. 1910- joint author.
LC ClassificationsQP255 .M5 1937
The Physical Object
Pagination122 p., 1 l. :
Number of Pages122
ID Numbers
Open LibraryOL6380912M
LC Control Number38039373

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The boar reproductive system consists of six different structures (testes, epididymis, deferent ducts, urethra, accessory sex glands, and penis) and the main function is the production and the. The book Boar Reproduction: Fundamentals and New Biotechnological Trends links the past, the present and the emerging scientific research fields on reproductive biotechnology, offering a rigorous but easy to follow compilation of topics, from “old favorites” to the latest . The male reproductive system (Fig) consists of two testicles, each of which is held almost vertically with the tail of the epididymis at the top. The epididymis is the area within which all the mature sperm is stored and held until ejaculation. From each testicle a tube, the urethra, carries the sperm into the abdomen via the inguinal canal. To present a coherent and meaningful survey of scientific research endeavour in an area that has expanded as fast as physiology and biochemistry of reproduction in the male is no mean task these days. No less prodigious than the growth of knowledge of male reproductive function has been the rate at which the outpouring of publications on this subject has continued since the appearance of 'The.

Handout 2: Structure and Function of the Reproductive System of the Bull, Boar and Stallion General Structure and Function. A. The Testes. These primary organs have the dual function of producing sperm cells, and also the male hormone, testosterone. The testis is enclosed in the tunica albuginea surrounded by another tough tunic, the tunica vaginalis. Testicle - The gland in which the sperm is produced. Urethritis - inflammation of the urethra, the tube which carries both sperm and urine down the penis in the boar or urine from the bladder to the vagina in the sow. Urethritis is uncommon in the boar but can occasionally be caused by small calculi or stones formed in the kidneys. It is the organ of connection between the scrotal and pelvic genital organs 1- Spermatic artery 2- Spermatic vein 3- Spermatic nerve 4- Lymphatic vessels 5- Tunica vaginalis (visceral) 6- internal cremasteric muscle 7- Vas deferens Stallion Boar, Camel 2- Spermatic vein 3- Spermatic nerve. each ejaculation emits about ml of semen which contains about million sperm. it takes the sperm about hours to reach the fertilization site in the uterine tube, but many sperm can survive some where in the female reproductive tract for up to days. one of the sperm will eventually penetrate through zone pellucida,and.

Muscular contractions of the cervix stimulate ejaculation of the boar and is the basis of the boar's ejaculatory response to the "gloved hand" or "digital pressure" technique of semen collection. Thirty to sixty billion sperm are deposited by the boar during natural service or 2 to 6 billion during insemination but only a small fraction of.   The male reproductive system consists of a pair of testes that produce sperm (or spermatozoa), ducts that transport the sperm to the penis and glands that add secretions to the sperm to make semen (see diagram ). The various parts of the male reproductive system with a summary of their functions are shown in diagram Diagram A boar has a corkscrew-shaped penis wich fits into the corkscrew shaped cervix canal of the sow, thereby restricting backflow of semen during mating - which takes minutes. In both cases the spiral takes the form of a "left-hand thread". Parts of the Boar Penis: The free part or tip is called the glans, the main section is called the body. Semen can be collected from many such boars by allowing them to achieve natural intromission and lock the penis into the sow’s cervix to begin the ejaculation, then quickly retrieving the penis and locking it into the hand. The boar will continue to ejaculate, and the major portion of the ejaculate can be collected.