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Download e-book for iPad: Animal andrology: theories and applications by Peter J. Chenoweth, Steven Lorton

By Peter J. Chenoweth, Steven Lorton

This e-book comprises 19 chapters that debate theoretical and utilized andrology for household, zoo and wild animals. themes contain semen and its ingredients; sperm construction and harvest; determinants of sperm morphology; sperm education for fertilization; functional elements of semen cryopreservation; evaluate of semen within the andrology laboratory; genetic features of male replica; rising thoughts and destiny improvement of semen review and dealing with and utilized andrology in cats, canines, fowls, turkeys, sheep, goats, cervids, horses, livestock, zebu, buffaloes, pigs, camelids, zoo animals and wild animals. it will likely be of use for these instructing animal body structure at a tertiary point and a reference for these drawn to male animal reproductive review, functionality and in semen overview, dealing with and use for man made breeding. on hand In Print

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Download PDF by Peter J. Chenoweth, Steven Lorton: Animal andrology: theories and applications

This publication comprises 19 chapters that debate theoretical and utilized andrology for family, zoo and wild animals. themes contain semen and its materials; sperm construction and harvest; determinants of sperm morphology; sperm education for fertilization; useful features of semen cryopreservation; overview of semen within the andrology laboratory; genetic elements of male copy; rising options and destiny improvement of semen review and dealing with and utilized andrology in cats, canines, fowls, turkeys, sheep, goats, cervids, horses, livestock, zebu, buffaloes, pigs, camelids, zoo animals and wild animals.

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With respect to a breeding soundness examination, retesting at a later date and/or the collection of additional ejaculates on the same date would be advisable if the quality of an initial ejaculate(s) was questionable. 7). Thus, the semen that is harvested on any given day represents the culmination of a process that for most species extended over at least the previous 60–70 days. Low semen quality could reflect problems with spermatogenesis or epididymal function arising at any time during that period, from which recovery could require a similar length of time.

8 a Estimate calculated by the author by dividing DSP by testicular weight, without correction for the weight of the tunica albuginea. b Ile-de-France rams. 0 days. sperm in great excess of the numbers required for normal fertility. This does not diminish the importance of considering sperm production during an examination of breeding soundness or during the selection of males for breeding. As discussed later, sperm number declines in successive ejaculates taken on a single day (Amann, 1981). Thus, the potential for sperm numbers per mating to decrease to below an optimal level is always possible for males required to breed large numbers of females within a short period of time via natural mating.

The acrosome is composed of an inner and outer membrane and a protease-filled matrix. In mammals, the acrosome overlays in a caplike manner about 60% of the apical region of the sperm nucleus and head. It exhibits species-specific differences in shape, size and precise location on the sperm head (Fawcett, 1975; Mann and Lutwak-Mann, 1981). The acrosomal membrane that just underlies the plasma membrane is known as the outer acrosomal membrane, while that overlying the nucleus is called the inner acrosomal membrane.

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