Oxytocin improves testicular blood flow without enhancing the steroidogenic activity in Baladi goats  

作　　者：Mohamed G.Hedia Amr S.El-Shalofy 

机构地区：[1]Department of Theriogenology,Faculty of Veterinary Medicine,Cairo University,Giza 12211,Egypt

出　　处：《Asian pacific Journal of Reproduction》2022年第5期223-230,共8页亚太生殖杂志（英文版）

摘　　要：Objective:To investigate the effects of a single oxytocin injection on plasma steroid concentrations,testicular blood flow measures(resistive and pulsatility indexes),and testicular echogenicity in Baladi goats.Methods:Twelve Baladi goat bucks were randomly allocated into 2 groups and received an intravenous injection of either 0.7 IU/kg oxytocin or normal saline 0.9%.Venous blood samples were collected,and testicular blood flow Doppler parameters(i.e.,peak systolic velocity,end-diastolic velocity,time average maximum velocity,resistive index,and pulsatility index)were assessed for supratesticular arteries in the left and right testes immediately before(0),and at 5,30,60,and 120 min after injection.Results:Plasma concentrations of testosterone significantly decreased in the oxytocin group at 60 min post-treatment compared to the control group,whereas plasma concentrations of estradiol-17βwere not affected(P>0.05).Both resistive index and pulsatility index declined in the oxytocin group at 60 min post-treatment compared to the control group(P<0.05).Testicular pixel intensity increased at 30 min post-treatment in the oxytocin group compared to the control group(P<0.05).Conclusions:Oxytocin treatment significantly increases testicular blood flow and decreases plasma testosterone concentrations in male Baladi goats.

关 键 词：BUCKS Blood flow Doppler Estradiol-17β Goat OXYTOCIN Testicular artery TESTOSTERONE 

分 类 号：S852[农业科学—基础兽医学]