It has been repeatedly demonstrated that estrous expression before fixed-time AI (TAI) results in increased pregnancy success. Therefore, the objective of this experiment was to determine if preblastocyst embryonic developmental characteristics differed from heifers that did or did not exhibit estrus before TAI. Beef heifers (n = 113) were synchronized using the 5-d CO-Synch + controlled intern...

Relevance. The main direction in the improvement of dairy cattle breeds is search for ways and methods creating highly productive herds. However, successful solution these issues impossible without use modern technologies. Among them, sexed sperm a divided into Xand Y-containing spermatozoa. When using breeding, it possible to regulate receipt desired sex (heifers). effective semen will provide...

Twenty-four Sprague-Dawley male rats (7-9 weeks old, 200-250 g) were divided into Nicotine (N) (0.5 mg/100 g body weight (BW), Nicotine Control (NC) (saline, 0.1 mL/100 g BW), Habbatus sauda oil (HS) (6.0  μ L/100 g BW), and Habbatus sauda Control (HSC) (corn oil, 0.1 mL/100 g BW) groups and treated for 100 days. Sperm parameters and seminiferous tubules measurements were evaluated. The N showe...

For males with severe oligospermia or those using sperm extracted from the epididymis testis identifying characteristics that are associated a successful live birth after IVF/ICSI would be valuable for patient counseling. A total of 243 ICSI cycles were performed epididymal (ES; n= 52), testicular (TS; n=64) men (OS; 127), having one million fewer per ml. Sperm assessments made prior to initiat...

Background: Excess reactive oxygen species (ROS) in the semen is believed to affect fertility in men. Morphologically abnormal sperms and their relation to seminal oxidative stress in infertile and subfertile men are not clear. Objective: To correlate various sperm morphological defects with seminal oxidative stress in infertile and subfertile men. Materials and Methods: The study included 25 p...

The study was designed to investigate the efficacy of treating the adult male rats with royal jelly (1g/kg B. Wt. orally) for one month with or without hydrogen peroxide (0.5%) in drinking water on sexual efficiency, glutathione and malondialdehyde tissue testis levels. The current study demonstrated that male rats receiving hydrogen peroxide caused a significant decrease (P<0.05) in the sperm ...

PURPOSE We evaluated the impact of varicocelectomy on intracytoplasmic sperm injection outcomes in infertile men with clinical varicocele. MATERIALS AND METHODS We studied 242 infertile men with a history of clinical varicocele who underwent intracytoplasmic sperm injection. Of the men 80 underwent prior subinguinal microsurgical varicocelectomy (treated group 1) and 162 had any grade of clin...

Approximately one in six married couples find themselves involuntarily infertile. This ratio translates to between two and four million U.S. couples. Although numerous tests are available for diagnosing infertility problems, 5-10 percent of all couples who seek medical treatment are diagnosed with unexplained infertility. Several tests are presently available for diagnosing male infertility; ho...

Male pales weevils, Hylobius pales (Herbst), were sexually immature upon emergence from their pupal cells. During the first 2 wk of adult life the concentration of sperm bundles in the testes increased, and a lumen containing a granular material began to form in the accessory glands. Most individuals had active sperm when 2 wk old. Four-week-old males had a large concentration of sperm bundles,...