Lower fertility of preserved stallion semen may be caused by damage to the spermatozoa or premature capacitation during storage. We investigated the use of the flavonoid, quercetin, with a standard skim milk extender for storage of stallion spermatozoa to prevent premature capacitation and acrosome ...

The effects of dietary lipid from 4 experimental diets on the fatty acid composition and cholesterol content of spermatozoa and their plasma membranes and their consequences for sperm viability after cryopreservation were evaluated in rainbow trout. The 4 sources of lipid were herring oil (adequate ...

Cryopreservation of Arctic charr semen was investigated using 3 diluents (0.3 M glucose, 0.3 M glucose with 0.011 M KCl and 0.137 M NaCl, 0.011 M KCl, 0.004 M Na2HPO4 with 7.5 g/litre L- alpha -lecithin adjusted to pH 7.5) 3 cryoprotectants [10% dimethyl sulphoxide (DMSO), 10% dimethylacetamide (DMA...

The possibility of long term storage, by cryopreservation in liquid nitrogen, of spermatozoa of ocean pout (Zoarces americanus) and the changes in motility, fertility and ultrastructure of the spermatozoa after freezing and thawing were examined. Four cryoprotectants, including DMSO, and 3 semen dil...

Semen from yellowtail flounder was cryopreserved in 0.25 ml and flat 1.7 ml straws. Semen frozen in 1.7 ml straws was collected from males that had been stimulated to increase semen output by treatment with a GnRH analogue. The semen extender was a modification of a diluent that had previously been ...

One hundred and twenty-six beef bulls on southwestern Louisiana coastal range were evaluated for breeding soundness. Samples were taken to determine the incidence of bovine leukemia virus (BLV) infection, and the prepuce was cultured for potential pathogens. A high incidence (47.6%) of questionable ...

Several media for the storage of fresh semen from rainbow trout at 4 degrees C were evaluated. Semen was diluted with an equal volume of fluorocarbon, a 1:1 fluorocarbon:extender emulsion, a 2:1 fluorocarbon:extender emulsion, or with extender, or was stored undiluted. The semen was stored under moi...

The Mules operation practically eliminated fly-strike and the need for jetting in a Merino flock, while in "Comeback" sheep flystrike was considerably reduced and jetting requirements were halved. For both types of sheep crutching time and wool soiling were reduced. Although the operation ...