一个完整的育种健全性评价是对不育男性狗的评估至关重要。隐睾，性别限制的常染色体隐性遗传性状，是更常见的作为单方的条件。无精子症是由精浆但缺少精子的射精;在发情母狗的存在重复精液集将排除经验不足，缺乏性刺激。既肉碱和碱性磷酸酶（AP）在附睾产生;精浆AP浓度> 5000 U / L指示正常射精，而<5000 U/L is associated with incomplete ejaculation. Benign prostatic hypertrophy (BPH), the most common age-related condition in intact male dogs, is characterized by a sanguineous urethral discharge, hematuria, or hemospermia; diagnosis is based on prostatic enlargement and confirmed by a transabdominal biopsy. Although castration is recommended, valuable breeding dogs can be given 非那雄胺. Prostatitis is more common in older dogs with BPH. Culture of the third fraction of the ejaculate or urine obtained by cystocentesis is indicated. Bacterial prostatitis is treated with antibiotics with high lipid solubility. Some dogs with bacterial prostatitis may develop prostatic abscesses (a medical and surgical emergency). Prostatic cysts are often asymptomatic. Approximately, 5–7% of dogs with prostatic disease have prostatic neoplasia, most commonly adenocarcinoma (it occurs in both intact and castrated dogs), which often metastasizes and has a very poor prognosis. Although a specific diagnosis can be made in many cases of male dog infertility, not all causes are amenable to treatment.
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