Peer-reviewed veterinary case report
Beagle dog with sperm tail defects and testicular blood flow issues
By Luño, Victoria et al.·Published in Topics in companion animal medicine·2020·Department of Animal Pathology, Spain·View original on PubMed →
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Original publication title: Sperm Tail Defects and Abnormal Testicular Blood Flow in a Beagle Dog: A Case Report.
- Species:
- dog
Plain-English summary
A 5-year-old male Beagle was found to have issues with his sperm, showing a high number of abnormal sperm shapes, particularly with coiled and bent tails. While his sex drive and semen volume were normal, tests indicated he had low sperm count and poor sperm movement. Further examinations revealed changes in blood flow to the testicles and a reduction in germ cells, which are necessary for sperm production. This case highlights the connection between sperm abnormalities and testicular blood flow issues.
People also search for: Beagle sperm problems · dog infertility symptoms · abnormal sperm shape in dogs
Abstract
A 5-year-old male Beagle dog produced ejaculates with a high percentage of spermatozoa with abnormal morphology, especially sperm tail defects. Although libido and semen volume were normal, ejaculates showed asthenospermia, oligozoospermia, and teratozoospermia. The spermatozoa exhibited morphologic defects affecting the flagellum, mainly coiled tails with or without macrocephalia (33.5 ± 2.1%), bent tails (18.3 ± 3.4%), and proximal cytoplasmic droplets (6.7 ± 2.8%). The peripheral plasma testosterone level was 2.76 ± 0.21 ng/mL. The resistive index and the pulsatility index from marginal and intratesticular vessels measured by Doppler ultrasound showed higher values in the right testicle than in the left testicle. Histologic evaluation revealed focal reduction in the number of germ cells and sperm in the seminiferous tubules in the right testicle. This is the first report that describes simultaneously the presence of sperm tail defects in the ejaculate and changes in the blood flow of testicular vessels in the dog.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/32115074/