Use of sexed semen for artificial insemination of US Holstein heifers (1.3 million breedings) and cows (10.8 million breedings) in Dairy Herd Improvement herds was characterized by breeding year, parity, service number, region, herd size, and herd milk yield. Sexed semen was used for 1.4, 9.5, and 17.8% of all reported breedings for 2006, 2007, and 2008, respectively, for heifers, and for 0.1, ...

The present study was aimed to observe the postthaw quality of Nili-Ravi buffalo bull semen cryopreserved during heat stress (hot summer months) and normal climatic conditions (fall, winter, spring months). For this purpose, four (n = 4) adult regular donor bulls were selected collect cryopreserve their throughout period an entire year. cryopreservation done following standard freezing protocol...

BACKGROUND This study was done to characterize parameters associated with semen human immunodeficiency virus (HIV)-1 ribonucleic acid (RNA) viral load (VL) variability in HIV-infected, therapy-naive men. METHODS Paired blood and semen samples were collected from 30 HIV-infected, therapy-naive men who have sex with men, and 13 participants were observed longitudinally for up to 1 year. Human i...

The experiment was carried out at District Artificial Insemination (AI) Center at Khulna to evaluate the conception rate of frozen semen and locally produced liquid semen. Frozen semen from five different genotypes (Local, Sahiwal×Friesian, (Local×Friesian)2×Friesian, (Local×Friesian)×(Local×Frisian×Friesian), Local×Friesian) of bulls was taken which was served by Central Cattle Breeding Statio...

The aim of this study was to analyse semen quality parameters fresh-extended porcine imported from Denmark through prolonged importing regulations and transport fertility performance in sows inseminated four days post collection. Semen analysed immediately upon the arrival (4 collection) using computer-assisted sperm analyses (CASA), cytomorphology flow cytometry, were later same day. mean conc...

Antibiotics are added to semen extenders to be used for artificial insemination (AI) in livestock breeding to control bacterial contamination in semen arising during collection and processing. The antibiotics to be added and their concentrations for semen for international trade are specified by government directives. Since the animal production industry uses large quantities of semen for artif...

We tested to see if semen collection interferes with fertility in naturally fertile pairs of cranes. We used 12 naturally fertile, Florida sandhill crane (Grus canadensis pratensis) pairs for this study, 6 control and 6 experimental. All pairs had previously produced fertile eggs. Semen was collected on Tuesday mornings and Friday afternoons from 26 February 1993 to 4 June 1993. We used standar...

In the last decade several registries have approved the use of frozen semen commercially. With the recent approval by AQHA, the largest horse registry in the country, to use frozen semen, it is expected that inseminating mares with frozen semen will become a common procedure. There are several advantages in using frozen semen. Among them are the following: 1) transportation of a nitrogen tank i...

Varicocele is mostly asymptomatic, rarely causing pain at this age. The guidelines for managing varicocele in adolescent are not fully elicited, but the major surgical indications are testicular loss of volume followed by testicular pain. Young adult males with varicoceles, who have normal semen parameters, may be at risk for progressive testicular dysfunction and should be offered monitoring w...