Impotence in the boar 2: Clinical and anatomical studies on impotent boars

Abstract

Six boars were deficient in penile erection and incapable of intromission, but produced ejaculates containing spermatozoa. In five of these boars impotence was primary, but one boar had served normally for two seasons before showing secondary impotence. Sexual libido was good in two, moderate in two and poor in two of these animals. Post mortem studies on the reproductive tracts revealed no abnormalities except in the penes. In one of the boars with primary impotence, the penis showed an abnormal type of spiral deviation during simulated erection, but there was no abnormality in the venous drainage of the organ. In the other five boars, injection experiments revealed venous drainage of the corpus cavernosum penis (ccp) into the dorsolateral (left) tributary of the v dorsalis penis. In four cases, the apical cavernous spaces of the ccp communicated with the vascular spaces of the corpus spongiosum glandis. No direct communications with the corpus spongiosum penis (csp) were demonstrated but the csp was injected from the ccp indirectly, by way of the dorsal venous system. It is suggested that these abnormalities may have been the immediate cause of impotence in these five boars. This possibility is discussed in relationship to the processes of erection and ejaculation and to various clinical signs shown by these animals. The abnormalities of venous drainage were thought to be developmental in origin and the condition may be inherited.

New Classification of Anomalous Venous Drainage Using Caverno-Computed Tomography in Men with Erectile Dysfunction

“…In seven cases (26%) with superficial drainage, opacification of the spongious tissue was observed, suggesting cavernospongious communications (Figure 5). This phenomenon, suspected to be causative of ED, has been previously identified in other species besides humans, such as in bulls and boars [16–19]. In humans, some of these cases were successfully treated surgically by closing the shunt or treating directly the leak [19–22].…”

“…This phenomenon, suspected to be causative of ED, has been previously identified in other species besides humans, such as in bulls and boars [16–19]. In humans, some of these cases were successfully treated surgically by closing the shunt or treating directly the leak [19–22]. Fuchs signals in 44 ED patients’ cavernosograms, a visualization of the spongious tissue in 25%.…”

Erectile dysfunction and caverno-venous leak disease

“…Interestingly, venous leak disease as cause for erectile dysfunction is, in no case, only a condition found in human. Several reports demonstrate an erectile dysfunction due to corporo-venous insufficiency in various animal species, including bulls and boars [7][8][9][10].…”