The administration of fish oils is known to cause changes in several reproductive parameters of domestic animals. The ingestion of polyunsaturated fatty acids (PUFAs) of the omega‐3 family, such as docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), has been described and correlated with changes in the semen quality, testosterone levels and male fertility. Nevertheless, few studies monitored and registered effects after ceasing supplementation. In the present study, we monitored the Doppler velocimetric and ultrasonographic parameters of nine dogs' testis for 90 days (D90) checking the effect of salmon oil supplementation, and monitoring continued for 60 days more, after ceasing supplementation (D150). Ultrasonographic evaluations comprised determining the Doppler velocimetric parameters, testicular and epididymal volume, and testicular echotexture. Peak systolic velocity (PSV) as well as final diastolic velocity (EDV) in the supratesticular arteries (STA), and marginal artery (MA) increased during the period of treatment and kept that level up to D150. There was no difference between the fish‐oil supplementation period and the unsupplemented one regarding the testicular and epididymal volume and echogenicity and heterogeneity characteristics. A negative correlation was found between heterogeneity of testis and sperm production (r = −.41, p = .008). Doppler velocimetry indices were affected by the supplementation, leading to an increase in testicular blood flow.

中文翻译：

---

狗补充鲑鱼油会影响睾丸动脉的血流量

众所周知，服用鱼油会导致家养动物的几种繁殖参数发生变化。已经描述了摄入 omega-3 家族的多不饱和脂肪酸 (PUFA)，例如二十二碳六烯酸 (DHA) 和二十碳五烯酸 (EPA)，并与精液质量、睾酮水平和男性生育能力的变化相关联。然而，很少有研究在停止补充后监测和记录效果。在本研究中，我们监测了 90 天 (D90) 九只狗睾丸的多普勒测速和超声参数，以检查补充鲑鱼油的效果，并在停止补充后继续监测 60 天 (D150)。超声评估包括确定多普勒测速参数、睾丸和附睾体积、和睾丸回声纹理。在治疗期间，睾丸上动脉 (STA) 和边缘动脉 (MA) 的峰值收缩速度 (PSV) 以及最终舒张速度 (EDV) 增加，并保持该水平高达 D150。在睾丸和附睾体积以及回声和异质性特征方面，鱼油补充期与未补充期之间没有差异。发现睾丸异质性与精子生成之间呈负相关（在睾丸和附睾体积以及回声和异质性特征方面，鱼油补充期与未补充期之间没有差异。发现睾丸异质性与精子生成之间呈负相关（鱼油补充期和未补充期在睾丸和附睾体积以及回声和异质性特征方面没有差异。发现睾丸异质性与精子生成之间呈负相关（r  = -.41，p = .008  ）。多普勒测速指数受补充剂的影响，导致睾丸血流量增加。