The effect of varying protein degradability on mohair fibre characteristics and liveweight gain in angora goats

The primary objective of Angora goat producers is to optimise yields of high quality mohair, characterised by long staples of fine fibres. There is also now an increased interest in the concurrent production of goat meat as an additional source of income. Protein supplementation has been shown to affect mohair yield, quality and liveweight gain in Angora goats both in the USA (Shelton and Huston, 1966) and more recently in the UK (Shahjalal et al., 1991). Throckmorton et al. (1982) detected an improvement in liveweight gain and fibre production when Australian Angoras were fed a supplement high in rumen undegradable protein (UDP) but the effect of protein degradability has not yet been established, particularly under UK conditions. The aim of this trial was to determine the effect of varying protein degradability on yield, staple length and fibre diameter of mohair, and on liveweight gain of British Angora goats.

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Effect of level of protein supplementation on growth, body composition and fibre characteristics of british angora goats

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600021085 ◽

1991 ◽

Vol 1991 ◽

pp. 158-158

Author(s):

Md Shahjalal ◽

H Galbraith ◽

J H Topps ◽

J M Cooper

Keyword(s):

Growth Rate ◽

Body Composition ◽

Protein Supplementation ◽

Protein Utilization ◽

Animal Products ◽

Protein Supplements ◽

The Usa ◽

Angora Goats ◽

The Uk ◽

Fibre Characteristics

The growing need to diversify animal agriculture in the UK has increased interest in the production of Fibre and meat from goats. Protein supplements are among the most expensive of feed ingredients in animals ration and the efficiency of protein utilization is of considerable importance in the economical production of animal products such as meat, Fibre or milk. Previous studies (e.g. Huston etal, 1971; Huston, 1980 in the USA; Shahjalal et al, 1990a in the UK) have suggested that protein supplementation can influence growth rate and fibre characteristics of Angora goats. The aim of the work reported here was to provide more detailed information on the effect of level of protein supplementation on growth performance, carcass yield and fibre characteristics of British Angora goats.

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Effects of dietary yeast and protein supplementation on growth and fibre characteristics of british angora goats

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600018511 ◽

1990 ◽

Vol 1990 ◽

pp. 70-70

Author(s):

E R Deaville ◽

H Galbraith

Keyword(s):

Saccharomyces Cerevisiae ◽

Fibre Production ◽

Protein Supplementation ◽

Small Enterprise ◽

Blood Metabolites ◽

Nutritional Requirements ◽

Additional Protein ◽

Angora Goats ◽

The Uk ◽

Fibre Characteristics

The growing need to diversify animal production in the UK has Increased the interest in indigenous fibre production. Mohair production from Angora goats 1n this country dates back as recently as 1981 with the Importation of 15 Angora does and 3 bucks from New Zealand (Ryder, 1987). To date this production remains a very small enterprise producing less than 0.2% of the world's mohair production (Fisher, 1989) and is compared with an estimated 40% of the world's mohair Imported annually in the UK, valued at approximately £35 million (Fisher, 1989).There is relatively little information available concerning the nutritional requirements of British Angora goats in relation to mohair production. The objective of the present study was to investigate the effects of feeding basal diets supplemented with Saccharomyces cerevisiae (Yea -Sacc, Alltech, Europe) and additional protein on growth performance, selected blood metabolites and fibre (mohair) growth 1n Angora goats.

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Intramuscular fat analysis of intensively and commercially reared British Angora goats

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600027550 ◽

1994 ◽

Vol 1994 ◽

pp. 211-211

Author(s):

J. A. Kirk ◽

V. S. A. Russell-Dawe ◽

S. Austin

Keyword(s):

Fibre Production ◽

Intramuscular Fat ◽

Research Association ◽

Commercial Practice ◽

Yield And Quality ◽

Complete Diet ◽

Intensive Rearing ◽

Angora Goats ◽

The Uk ◽

Angora Goat

The Angora goat herd in the UK primarily produces mohair but must, as an enterprise, maximise the return from animals that are surplus to requirement. It has been suggested that the Uk producer should be aiming for fourty percent of financial output from meat and sixty percent from mohair (Thirwell 1988). Compared to cattle and sheep, knowledge of yield and quality of goat meat reared under UK conditions is limited. The role of nutrition and stage of maturity in determining levels and distribution of fat are poorly understood (Warmington and Kirton 1990).The male castrate Angora goat was selected since this constitutes the major source of meat, being generally redundant after two years of age when fibre quality begins to decline. Animals were sequentialy slaughtered at the predetermined ages of six,12, 18 and 24 months to coincide with the commercial practice of shearing Angora goats at six monthly intervals. Fourty animals, typical of those kept for commercial mohair production in the Uk, were reared under a commercial or intensive rearing system. Twenty goats were fed on a grass based, commercial system, representing that fovouring quality fibre production. The remaining twenty were reared intensively on an ad lib. pelleted complete diet containing 8.9 MJ/kg dry matter and 11.4 percent crude protein. Five goats from each diet were slaughtered at the predetermined times. After slaughter the carcases were jointed and then dissected inio lean, fat and bone. The quantity and composition of the intramuscular fat in the longissimus dorsi was determined using the Food and Research Association (1987) method and by use of gas chromatography.

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Effect of dietary supplements based on urea or whitefish meal on growth and fleece characteristics of siberian and australasian Crossbred cashmere goats

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600027598 ◽

1994 ◽

Vol 1994 ◽

pp. 215-215

Author(s):

H. Galbraith ◽

Md. Shahjalal ◽

J.H. Topps

Keyword(s):

Growth Rate ◽

Growth Performance ◽

Dietary Supplements ◽

Protein Supplementation ◽

Carcass Yield ◽

Animal Agriculture ◽

Cashmere Goats ◽

Angora Goats ◽

The Uk ◽

Fibre Characteristics

The growing need to diversify animal agriculture in the UK has increased interest in the production of fibre and meat from goats. Previous studies (e.g. Shahjalal, Galbraith & Topps 1992, Anim. Prod. 541, 405–412; Deaville & Galbraith 1992, Anim. Fd. Sci. Technol. 38, 127–133) have suggested that protein supplementation can influence growth rate and fibre characteristics of Angora goats. The aim of the work reported here was to provide more detailed infirmation on the effect of level of protein supplementation on growth performance, carcass yield and fibre characteristics of British crossbred Cashmere goats.

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Influence of stocking rate and mixed grazing of Angora goats and Merino sheep on animal and pasture production in southern Australia. 3. Mohair and wool production and quality

Animal Production Science ◽

10.1071/an09186 ◽

2010 ◽

Vol 50 (3) ◽

pp. 168 ◽

Cited By ~ 15

Author(s):

B. A. McGregor

Keyword(s):

Growth Rate ◽

Fibre Diameter ◽

Fibre Production ◽

Grazing Pressure ◽

Stocking Rate ◽

Pasture Production ◽

Merino Sheep ◽

Wool Production ◽

Temperate Pastures ◽

Angora Goats

The effects of animal species (AS; Angora goats, Merino sheep, mixed-grazed goats and sheep at the ratio of 1 : 1) and stocking rate (SR; 7.5, 10 and 12.5 animals/ha) on fibre production and quality were determined in a replicated experiment on improved annual temperate pastures in southern Australia from 1981 to 1984. Separately grazed sheep produced the most total clean fibre/ha at each SR. Mixed-grazed treatments produced amounts of clean fibre/ha similar to the arithmetic mean of sheep and goat treatments at 7.5/ha (21.9 versus 21.3 kg/ha), 10% more at 10/ha (28.3 versus 25.3 kg/ha, P < 0.05) and 7% more at 12.5/ha (31.6 versus 29.6 kg/ha, P < 0.10). Clean wool production/head was affected by AS and SR but not year. Clean mohair production was affected by SR and year but not AS. Variation in mean fibre diameter (MFD) accounted for 67 and 71%, respectively, of the variation in clean wool and clean mohair production/head. There was an AS × SR interaction for clean fibre production/t pasture. Growth rate of mohair was highest in autumn and least in summer. In each season, an increase in the SR reduced the clean mohair growth rate. Growth rate of wool was highest in spring and least in summer. Wool and mohair MFD were affected by an AS × SR interaction. Mohair MFD was also affected by year and season. At 10/ha, wool from mixed-grazed sheep had a greater MFD than wool from separately grazed sheep (20.2 versus 18.9 μm) and mixed-grazed goats grew mohair 1 μm coarser than separately grazed goats. At 12.5/ha mixed-grazed goats grew mohair 1.9 μm finer than separately grazed goats. Mohair MFD was predicted by a multiple regression that included average liveweight for the period of fleece growth, season of growth (summer 1 µm finer than winter) and year (range 1.27 µm). Mohair MFD increased 4.7 µm/10 kg increase in average fleece-free liveweight (P = 6.4 × 10–14). Fleece-free liveweight alone accounted for 76.4% of the variation in mohair MFD. There was an AS × SR interaction for the incidence of kemp and medullated fibres; under severe grazing pressure their incidence was suppressed. This experiment indicated that the principles associated with the effects of SR on wool production on annual temperate pastures apply to mohair production. Mixed grazing of Merino sheep and Angora goats produced complementary and competitive effects depending on the SR. Angora goats should not be grazed alone or mixed-grazed with sheep on annual temperate pastures at SR greater than that recommended for Merino sheep.

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An early mainstream economist from Hungary: István Varga (1897–1962)

Acta Oeconomica ◽

10.1556/aoecon.53.2003.2.4 ◽

2003 ◽

Vol 53 (2) ◽

pp. 195-213 ◽

Cited By ~ 1

Author(s):

K. Majoros

Keyword(s):

Austrian Economic ◽

National Income ◽

Anglo Saxon ◽

Turbulent Times ◽

The Usa ◽

New Ideas ◽

Modern Economic ◽

The Uk ◽

Economic Thinking ◽

Lasting Influence

The study introduces a Hungarian economic thinker, István Varga*, whose valuable activity has remained unexplored up to now. He became an economic thinker during the 1920s, in a country that had not long before become independent of Austria. The role played by Austria in the modern economic thinking of that time was a form of competition with the thought adhered to by the UK and the USA. Hungarian economists mainly interpreted and commented on German and Austrian theories, reasons for this being that, for example, the majority of Hungarian economists had studied at German and Austrian universities, while at Hungarian universities principally German and Austrian economic theories were taught. István Varga was familiar not only with contemporary German economics but with the new ideas of Anglo-Saxon economics as well — and he introduced these ideas into Hungarian economic thinking. He lived and worked in turbulent times, and historians have only been able to appreciate his activity in a limited manner. The work of this excellent economist has all but been forgotten, although he was of international stature. After a brief summary of Varga’s profile the study will demonstrate the lasting influence he has had in four areas — namely, business cycle research and national income estimations, the 1946 Hungarian stabilisation program, corporate profit, and consumption economics — and will go on to summarise his most important achievements.

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