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Breeding Evaluation (Male) - Donkey (view source)
Revision as of 15:27, 6 January 2023
, 15:27, 6 January 2023no edit summary
Evaluation of breeding soundness is performed similarly to the stallion. Testicular size, semen volume and total sperm per ejaculate in the jack are significantly higher than in stallions (Tibary ''et al'', 2005). Testicular ultrasonography is characterized by a large central vein and more prominent ''caput'' and ''cauda epididymis''. Ultrasonographic evaluation of the accessory sex glands is similar to that of the stallion.
Evaluation of breeding soundness is performed similarly to the stallion. Testicular size, semen volume and total sperm per ejaculate in the jack are significantly higher than in stallions (Tibary ''et al'', 2005). Testicular ultrasonography is characterized by a large central vein and more prominent ''caput'' and ''cauda epididymis''. Ultrasonographic evaluation of the accessory sex glands is similar to that of the stallion.
The effect of season (photoperiod and ambient temperature) on semen production, semen quality and libido has been investigated. '''Semen production and quality are higher during the peak of the breeding season''' but in most studies seasonal effects on these parameters are not very marked (Glatzel ''et al'', 1981; Roy ''et al'', 2003, 2004; Tibary ''et al'', 2005).
The effect of season (photoperiod and ambient temperature) on semen production, semen quality and libido has been investigated. '''Semen production and quality are higher during the peak of the breeding season''' but in most studies seasonal effects on these parameters are not very marked (Glatzel ''et al'', 1981; Roy ''et al'', 2003, 2004; Tibary ''et al'', 2005).
==Literature Search==
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Use these links to find recent scientific publications via CAB Abstracts (log in required unless accessing from a subscribing organisation).
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[http://www.cabdirect.org/search.html?q=%28title%3A%28breeding+evaluation%29+OR+title%3A%28semen+quality%29+title%3A%28male+evaluation%29+OR+title%3A%28jack+evaluation%29+ab%3A%28semen+quality%29+OR+ab%3A%28breeding+evaluation%29+ab%3A%28male+evaluation%29+OR+ab%3A%28jack+evaluation%29%29+AND+%28title%3A%28donkey%29+OR+ab%3A%28donkey%29+OR+od%3A%28donkeys%29%29 Breeding evaluation in donkeys related publications]
==References==
==References==
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[[Category:Reproduction_-_Donkey]]
==Webinars==
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