Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos Dos Goytacazes, Brazil.
Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy.
Reprod Domest Anim. 2021 Mar;56(3):476-483. doi: 10.1111/rda.13886. Epub 2021 Jan 19.
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.
鱼油的使用已被证实会改变家畜的几个生殖参数。多不饱和脂肪酸（PUFAs）如二十二碳六烯酸（DHA）和二十碳五烯酸（EPA）的摄入已被描述并与精液质量、睾丸酮水平和雄性生育力的变化相关联。然而，很少有研究监测和记录停止补充后的效果。在本研究中，我们监测了 9 只狗的睾丸的多普勒速度计和超声参数 90 天（D90），检查了三文鱼油补充的效果，并在停止补充后再监测 60 天（D150）。超声评估包括确定多普勒速度计参数、睾丸和附睾体积以及睾丸回声质地。在治疗期间，睾丸上动脉（STA）和边缘动脉（MA）的收缩期峰值速度（PSV）和舒张末期速度（EDV）增加，并保持到 D150 。在补充期和未补充期，睾丸和附睾的体积以及回声的均匀性和异质性特征没有差异。睾丸的异质性与精子生成呈负相关（r = -.41，p = 0.008）。血流指数受补充影响，导致睾丸血流增加。
