English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Summary. Twenty-four gilts were inseminated with live spermatozoa, dead spermatozoa (killed by rapid freezing and thawing) or a mixture containing an equal number of live and dead spermatozoa. Before in- semination, the live spermatozoa were stained with fluorescene isothio- cyanate. The females were killed 8 hr after insemination and sperma- tozoa were recovered from their reproductive tracts. Significantly more spermatozoa were recovered from the oviducts of gilts inseminated with live spermatozoa than from oviducts of gilts inseminated with either dead spermatozoa or the mixture. In gilts inseminated with the mixture, 54, 73, 71 and 100% of the spermatozoa recovered from the posterior half of the uterine horns, anterior half of the uterine horns, tubal flushings and the surface of ova, respectively, showed fluorescence. In a second experiment, the left oviducts and right uterine horns were cannulated in eight gilts before cervically inseminating under anaesthesia with equal numbers of live-stained and dead spermatozoa. Fluid was collected from eight uterine and three tubal cannulae, the flow beginning within 1\m=1/2\and 4\m=1/2\min, respectively, after the onset of insemination. Both the volume of fluid collected and the concentration of spermatozoa in the fluid decreased with time after insemination, whereas the percentage of fluorescent spermatozoa increased. Dead spermatozoa were transported up the reproductive tract, but their transport was less efficient than that of live spermatozoa. Mechanisms of sperm transport are discussed.

TRANSPORT OF LIVE AND DEAD BOAR SPERMATOZOA WITHIN THE REPRODUCTIVE TRACT OF GILTS