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...

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 ...

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 ...

Twenty-seven different batch dates of frozen bull semen from 26 bulls were used in this study. The semen was in 0.5-ml straws, and 23 of the batch dates were in whole milk extender while 4 were in egg yolk-tris extender. Straws from each batch of semen were incubated for 2 hours in a water bath at 3...

During May to August 1989, serum samples were obtained from 1933 cows in 61 herds of dairy cattle on Prince Edward Island, and tested for bovine leukaemia virus antibodies by agar-gel immunodiffusion. Of these, 106 (5.5%) cows from 30 herds were positive for leukosis. By county, positive results wer...

The present study describes a new semen diluent (diluent C) which prolongs the sustained motility of ocean pout sperm, a distinguishing feature of the sperm of internally fertilizing teleosts. Sperm motilities were compared in the new diluent (C), based on the ionic composition of ocean pout seminal...

Uterine biopsies were taken on days 0, 3, 5, 7, 10, 15, 20 and 30 of the study from control mares and mares given intrauterine infusions of saline (group 2) or 1% povidone-iodine (group 3) on days 0 and 2. Control mares demonstrated mild inflammatory cellular reaction following biopsy. In group 2 ma...