1. A tryptic digest of the protein fraction U.S.3 from oxidized wool has been separated into 32 peptide fractions by cation-exchange resin chromatography. 2. Most of these fractions have been resolved into their component peptides by a combination of the techniques of cation-exchange resin chromatography, paper chromatography and paper electrophoresis. 3. The amino acid compositions of 58 of th...

Data was collected on secondary:primary follicle ratio, relative follicle density, and seasonal changes in fibre cross-sectional area and fibre ellipticity (ratio of major-to-minor fibre cross-sectional axis) in the Australasian specialty carpet wool breeds (Carpetmaster, Drysdale, Elliottdale, Tukidale), Romneys and Merinos. Merinos had a higher secondary:primary follicle ratio (p<0.001), rela...

Historically, sheep have been selectively bred for desirable traits including wool characteristics. However, recent moves towards extensive farming and reduced farm labour have seen a renewed interest in Easycare breeds. The aim of this study was to quantify the underlying genetic architecture of wool shedding in an Easycare flock. Wool shedding scores were collected from 565 pedigreed commerci...

A method of processing clinical specimens received at the laboratory on cotton wool swabs is described. The method uses a range of selective culture media to assist in the isolation of potential pathogens from mixed cultures. Because the culture media are distributed in 2 millilitre volumes in the small squares of divided plastic petri dishes it is economically possible to use the same series f...

Atypical cotton-wool spots in four selected cases of diabetic retinopathy are discussed. The most striking characteristic distinguishing them from typical cotton-wool spots is their size, which ranges from about 2 to 4 disc diameters. They develop after stenosis or a complete obstruction of a first order arteriole at the point at which it emerges from the parent arterial branch. The size of the...

Fleece rot was induced in 15 young Merino ewes by treatment with repeated application of simulated rain. Forty days after induction, treated and five control ewes were subjected to 50 mm of simulated rain which contained a water soluble dye. Treated ewes absorbed significantly more water than controls (2.3 kg to 1.5 kg). Wool samples were collected at ten cm intervals along the dorsal midline t...

Many future climate scenarios suggest that much of southern Australia could potentially experience higher temperatures and less rainfall. Consequently, livestock production is likely to become more challenging in the future. Managing these risks by examining the potential economic impact of alternative futures is a sensible approach for wool producers to consider in the face of predicted change...

The level of production by sheep that graze a Mediterranean pasture as it matures and senesces depends on diet selection. By estimatin, 0 diet selection under these conditions using 2 methods, we predict that the intake of nitrogen (N) and amount of N apparently digested (ADN) decreases as the pasture matures and senesces, but that it decreases at a slower rate than the decline in pasture N con...

1. The amino acid sequence of a protein from the reduced and carboxymethylated high-sulphur fraction of wool has been determined. 2. The sequence of this S-carboxymethylkerateine (SCMK-B2C) of 151 amino acid residues displays much internal homology and an unusual residue distribution. Thus a ten-residue sequence occurs four times near the N-terminus and five times near the C-terminus with few c...