In vitro and in vivo evaluation of protein quality of enzymatic treated feather meals

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Table 3 Apparent nitrogen retention (ANR), apparent fat digestibility (AFD) and apparent metabolisable energy (AME_n) in feed samples

Treatment diet	Apparent nitrogen retention (%)	Apparent fat digestibility (%)	Apparent metabolisable energy (N-corrected) (kcal/kg)
Diet 1 (control)	48.16^b	63.05	3005.82
Diet 2 (K6FM)	77.31^a	82.40	3277.05
Diet 3 (K82FM)	85.82^a	88.20	3445.42
Diet 4 (K6:K82FM)	55.42^b	72.92	3255.58
Diet 5 (CMFM)	45.70^b	68.76	3148.77
P value	0.0009	0.9089	0.9793
Pool ± SE	11.4751	32.2577	949.0794

Diet 1 = corn soybean meal + 10 % CFM; Diet 2 = corn soybean meal + 10 % K6FM; Diet 3 = corn soybean meal + 10 % K82FM; Diet 4 = corn soybean meal + 10 % K6:K82FM; and Diet 5 = corn soybean meal + 10 % CMFM
^a,bMeans within a column with different superscripts differ significantly (P < 0.05)