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Bibliography: leaves [127-137] / 126 [78] leaves, [26] leaves of plates : ill ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Biochemistry, 1985

x, 123 leaves : photos., graphs, tables ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Animal Physiology, Waite Agricultural Research Institute, 1977

Choice of shearing time is one of the major management decisions for a wool-producing Merino flock and affects many aspects of wool production and sheep health. Previous studies have investigated the effect of shearing on only a few of these factors at a time, so that there is little objective information at the flock level for making rational decisions on shearing time. This is particularly the case for flocks that lamb in spring, the preferred time in south-eastern Australia. / A trial was conducted in a self-replacing, fine wool Merino flock in western Victoria, from January 1999 to May 2004, comparing ewes shorn annually in December, March or May. Within each of these shearing times, progeny were shorn in one of two different patterns, aligning them with their adult shearing group by 15–27 months of age. / Time of shearing did not consistently improve the staple strength of wool. December-shorn ewes produced significantly lighter and finer fleeces (average 19.1 μm, 3.0 kg clean weight), whereas fleeces from March-shorn ewes were heavier and coarser (19.4 μm, 3.1 kg). Fleeces from ewes shorn in May were of similar weight to fleeces from March-shorn ewes (3.1 kg), but they were of significantly broader diameter (19.7 μm). In young sheep, beneficial changes in some wool characteristics for each shearing group were offset by undesirable changes in others. / Shearing ewes in March or May, and weaners in March, May or June, significantly increased the risk of post-shearing mortality about three- and four-fold, respectively, compared to unshorn sheep. Substantial, highly significant associations in young sheep between post-weaning mortality, bodyweight and growth rate were also quantified using various survival analysis techniques. For example, the lightest 20% of weaners at weaning contributed 31% of all deaths in the year following weaning, and increasing average growth rate over summer and autumn from 250 to 500 g/month reduced the risk of death by 74%. These results could be used to develop supplementary feeding systems that efficiently reduce weaner mortality, which is a significant animal welfare issue in many Australian Merino flocks. / Mortality effects were incorporated into estimates of the total value of wool produced by the different shearing times between birth and culling at 6¼ years of age. Using median historical (1991–2006) wool prices, shearing ewes in March and their progeny first in June, or October (weaner)-December (ewe) shearing produced the greatest total value of wool ($111/head). March (weaners)-March (ewes) shearing had a wool value of $107/head and December (weaners)-December (adults) shearing $103/head. May-shorn ewes produced the smallest value of wool, irrespective of whether their progeny were first shorn in May or July ($93–96/head). / No shearing time consistently improved all animal health measures. May-shorn ewes had significantly more fleece rot in late autumn than the other shearing groups (odds ratio 2.5) and were up to 0.4 condition score lighter during winter, although they had a lower cost of dag (average $0.64/head) and significantly less breech strike risk in spring, compared to December-shorn ewes (odds ratio 0.18). December-shorn ewes had the greatest cost of dag ($1.50/head). March-shorn ewes had an intermediate cost of dag ($1.03/head) but significantly less breech strike than May-shorn ewes (odds ratio 0.38).Overall, December and March shearing were shown to be appropriate alternatives for a self-replacing Merino flock in south-eastern Australia, whereas May was an undesirable shearing time.

Thesis (Ph.D.)--University of Adelaide, Dept. of Animal Science, 2002. / "May 2002" Includes bibliographical references (leaves 148-164).

Thesis (Ph. D.)--University of Chicago, 1910. / Published also as Studies in economics and political science ... no. 35 in the series of monographs by writers connected with the London school of economics and political science. Bibliography: p. 189-191.

Thesis (Ph. D.)--University of Chicago, 1910. / Published also as Studies in economics and political science ... no. 35 in the series of monographs by writers connected with the London school of economics and political science. Bibliography: p. 189-191.

Over 1800 metric tons of wool is produced in Sweden on a yearly basis, only 300 is used. This project involved creating an online marketplace where wool producers and the general public alike could turn to regarding the purchasing and selling of Swedish wool, as well as general information regarding wool. The goal of this project was to reduce the wastage along with the negative effects it has on the environment, partially by making it easier to buy and sell wool, but also by tackling surrounding problems such as localization and subjectivity when selling. To further understand the wastage, but also wool and its properties, multiple contextual inquiries were conducted alongside a survey. The result is a marketplace, more specifically, a web application, which consists of a section to buy wool and a section to sell wool. Furthermore, the web application also consists of a section with general information regarding Swedish wool and a map showing wool nearby. / Det produceras över 1800 ton ull i Sverige varje år, endast 300 används. Detta projektarbete bestod av att skapa en webbtjänst i form av en köp- och säljmarknad som underlättar den svenska ullhandeln, samt sprider information angående svinnet. Själva köp- och säljmarknaden består av ett flertal sektioner. Tjänsten är utformad utifrån resultat av kontextuella undersökningar samt enkäter som bidrar till en mer användarvänlig upplevelse. På marknadsplatsen finner man bland annat en karta som illusterar för användaren var ull finns tillgängligt. Det övergripande målet med projektarbetet var att minska svinnet av svensk ull samt dess negativa effekter på miljön. Detta genom att underlätta handeln av lokalproducerad ull samt förebygga problem som den subjektivitet som kan uppstå vid försäljning, vilket i sig kan ses som en följd av avsaknaden av ett klassificeringssystem. Projektet resulterade i en väl fungerande webbtjänst med stöd för handel av ull.

The main object of the present investigation has been to establish a titration curve for mohair keratin and to compare it with similar data for wool, to determine whether the differences in physical and chemical properties could be attributed in any way to the acidic and basic character of these fibres. As shown in subsequent discussion such measurements provide extremely useful information regarding the chemical structure of proteins in general, and in the technical fields involving processes such as wool scouring, carbonizing and dyeing. The study has been extended to include certain modified wools, i.e. photochemically damaged, and oxidized keratin. The most successful contribution to the titration data of wool keratin is the work of Steinhardt and Harris and subsequent authors have tended to adopt their procedures without modification. In the present study attempts have been made to obtain a clearer understanding of the fundamental processes. New techniques and analytical methods have been introduced to improve the accuracy of the measurements.

The objective of this research is to document the complex journey of wool from cradle to grave and beyond and to analyse the ethical and environmental cost of production from the farm to the knitwear factory, to retail and finally as post-consumer waste. The research findings make a contribution to the growing commercial and consumer in debate in this arcs. Under the spotlight is wool growing including genetic and chemical manipulation and environmental degradation. Human exploitation at manufacturing sites, in some of the poorest countries of the world is discussed. Finally, the involvement of government, charitable and commercial institutions in the business of textile waste disposal which currently takes the form of landfill, incineration and Third World dumping is highlighted. Experiments have been undertaken to produce a small range of knitwear yarns and garments composed of a blend of wool. cotton and polyester. regenerated from 100% post consumer waste originally in the form of wool garments, jeans and drinking bottles. This has involved an innovative collaboration with the local Authority, community groups, a national charity. a textile reclamation company, spinner and commercial knitter. The aim of the research both theoretical and practical is to demonstrate that there are practical ways to 'close the loop' and to flag up the need for design in the 21' Century to focus on post-consumer issues and the manufacture of aesthetic commercially viable products made from non-virgin materials.