.


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(NRC, 1989) , . , - , , 80%. - , , , , (. 13 14 (NRC, 1989). (NRC. 1996) , 80%. . . , (Webster. 1987) , () . Webster et al.,(1984) [/ = 0.90 ( N-)/ N]. , . - N (Goering et al., 1972; Yu and Thomas, 1976) , (Waters et al.,1992), , nN , (Nakamura et al.,1994a; Rogers et al.,1986; Cleale et al., 1987; Weiss et al.,1989; Harty et al.,1998; Waters et al.,1992). , , , , , , . ,


64


. 5.


, , . Nakamura et al.,(1994a) , , . Waters et al.,(1992) Van Soest et al.,(1987), , . (- 89%) , . , , (62%) , , , (2%) (Waters et al.,1992). , , , . PDI (Jarrige. 1989) , ( 0.25 0.95). , , . , , (Stern et al., 1997). , , , , () . , . () , . , , . /1 1-3 , , . - (Beckers et al., 1996; Boila and Ingalls, 1994. 1995; Hvelplund, 1985; Jarosz et al.,1994; Moshtaghi Nia and Ingalls. 1995; Todorov and Griginov, 1991; Vanhatalo and Kctoja, 1995). ,


. , . , , (Beckers et al.,1996; Stern et al.,1997), (Madsen et al., 1 995). (Hvelplund, 1985; Todorov and Griginov, 1991).

Calsamiglia and Stern (1995) 3- , . : 1) - 1 0.1 N 1, 1 / , 2) IN NaOH 7.8 , 24 3) 100% ( ). -- ( ). . ( = 0.91) , 16 . 54 . 48 Calsamiglia and Stern (1995) - 6 . 9 . . Beckers et al.,(1996) 87 92%, 72 75% 64 69% , , 10 43 | . Hvelplund. (1985) 95 97%, 87 87% 74 75% , , 9 22 _. 40 53 \1 12 . , 75 / . , / , , , - (Vanhatalo et al.,1995; Voigt et al., 1985). ,



, Jarrige (1989) 13.3 : . , ( 15-2, ) 5%, .





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