The Beltsville sperm sexing technology is currently the only effective means of altering the sex ratio of offspring in livestock. The method is based on the flow-cytometric separation of X- and Y-chromosome-bearing sperm based on X/Y DNA content difference. It is an effective means of producing progeny of predetermined sex in cattle, swine, sheep, and laboratory animals. The method involves tre...

effects of mating sex ratios on production performance in indian peafowl were investigated at punjabwildlife research institute, gatwala faisalabad. research was conducted from may through august 2007 toexplore the most productive mating sex ratio. the sex ratios have a significant effect on egg production.maximum mean eggs (1.63) were produced by the sex ratio 1:2 while maximum egg fertility (...

The primary aim of this study was to evaluate the performance sorted semen in dairy cattle various breeds Uttarakhand. Total 6382 inseminations were performed different districts. Different factors considered for region, dam breed, parity number, insemination season, bull breed used insemination. Sorted provided by Uttarakhand Livestock Board. and statistical analysis using R version 4.3.1 soft...

The general conclusions coming from these reviews is that many different technologies have been attempted in this area with no major breakthroughs occurring. Once the promising technique has been evaluated using enough inseminations, the results indicate no skewing of the sex ratio. This is not to say that the breakthrough will not occur. In fact, promising new developments in our understanding...

White rhinoceroses suffer from a low rate of reproduction in captivity. This study examines the role of male reproductive function as a contributing factor. We used ultrasonography to image accessory sex glands, testis and epididymis. Electroejaculation provided 36 ejaculates from 21 rhinoceroses. Based on the percentage of progressively motile spermatozoa, semen was categorized in three groups...