Hereditary Sterilizing Short-Tail Sperm Defect in Finnish Yorkshire Boars

MicroRNA in sperm from Duroc, Landrace and Yorkshire boars

Sperm contain microRNAs (miRNAs), which may have roles in epigenetic control. Regarding phylogenetic relationships among various swine breeds, Yorkshire and Landrace, are considered phenotypically and genetically very similar, but distinctly different from Duroc. The objective of the present study was to compare abundance of boar sperm miRNAs in these three breeds. Overall, 252 prioritized miRN...

Sperm tail-stump defect in a Holstein bull.

THE sperm tail-stump defect has been reported in Holstein bulls in Canada (Coubrough and Barker 1964) and Denmark (Blom 1976), and also in Charolais (Williams 1987), Ayrshire (Vierula and others 1983, 1987, Arriola and others 1985, Foote and others 1992) and polled Hereford (Peet and Mullins 1991) bulls. This short communication describes a case in a Holstein bull, which was investigated by usi...

Molecular genetics of the iMMotile short tail sperM defect by Anu Sironen

P-133: Investigation of Genetic Variations in Exon 6 of AKAP4 Gene in Infertile Men with Immotile Short Tail Sperm

Background The immotile short tail sperm (ISTS) defect is one of the disorders that cause male infertility. Men with this condition have immotile short-tail sperm with structural defects in the fibrous sheath(FS). A Kinase Anchoring Protein 4 (AKAP4) is one of the most abundant proteins in the fibrous sheathof sperm flagella and provides scaffold for the correct assembly of FS.Since exon 6 of A...

Extent of linkage disequilibrium and effective population size in Finnish Landrace and Finnish Yorkshire pig breeds.

The extent of linkage disequilibrium (LD) and effective population size in Finnish Landrace and Finnish Yorkshire pig populations were studied using a whole genome SNP panel (Illumina PorcineSNP60 BeadChip) and pedigree data. Genotypic data included 86 Finnish Landrace and 32 Finnish Yorkshire boars. Pedigree data included 608,138 Finnish Landrace 554,237 and Finnish Yorkshire pigs, and on aver...