A review of factors leading to high fleece production in Angora compared to down-producing goats
A. J. Litherland, and T. SahluSheep and Goat Research Journal 12:99-104. 1996.
This paper describes the possible factors which lead to high fleece production in Angora (mohair-producing) goats compared to down-producing goats. In comparison to down-producing goats, Angora goats have a reduced seasonality of fiber growth; a three- to four-fold greater fiber output per unit area of skin during active growth; and a two-fold greater mean follicular fiber output during active growth. This may be associated with an improvement in the follicular efficiency for keratin production. Angora goats, in comparison to down goats, have similar feed intakes (on a metabolic liveweight basis) and efficiencies of feed digestion. Angora goats partition more nutrients to fiber growth and less to muscle than down goats. Angora goats also retain more nitrogen, have lower plasma urea concentrations, recycle urea more effectively and excrete less urea than down goats. High fleece production in Angoras may be associated with a reduced gluconeogenic capability and lower blood glucose concentrations.
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