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Nutrient requirements for wool production

The weight of wool produced by sheep varies considerably from one breed to another, and an average value is useful only as an example. The typical annual fleece production of a 50 kg Merino would be approximately 5.0 kg, of which about 3.0 kg (60 per cent) represents clean dry wool fibres, with the remaining 2.0 kg (40 per cent) being wool wax, suint, dirt and water. Wool wax is produced by the sebaceous glands and consists mainly of esters of cholesterol and other alcohols, along with the fatty acids normally found in glycerides. Suint, the secretion of the sudoriferous [Pg.373]

for a 30 kg male lamb gaining at 0.2 kg/day, the predicted NPg would be 9.2 g/day and NP would be 3.9 g/day. As the efficiency of metabolisable protein (MP) utilisation for wool production is 0.26, the MP requirement for wool production would be 15 g/day. [Pg.374]

CSIRO (2007) also recognises that the rate of wool growth, and therefore NP, varies directly with plane of nutrition. Daily wool growth is predicted from either the MP available for wool production or the ME available for wool production, whichever is limiting, on the assumption that wool growth is maximised when the MP ME ratio available for wool production is 12.0 g/MJ. If the ratio is less than 12.0 wool growth is predicted from MP supply, and if the ratio is greater than 12.0 wool [Pg.374]


See other pages where Nutrient requirements for wool production is mentioned: [Pg.343]    [Pg.373]    [Pg.374]   


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