Effects of Partial Substitution of Fish Meal by Soybean Meal with or without Heat-Killed Lactobacillus plantarum (LP20) on Growth Performance, Digestibility, and Immune Response of Amberjack, Seriola dumerili Juveniles

Table 6

Protease activity (PA, unit mg⁻¹ protein) in the digestive tract and apparent digestibility coefficients (ADC) in amberjack fed test diets^*.

Parameters	Soybean meal (SBM) replacement, % (HK-LP Prep., %)
	SBM0	SBM15	SBM15(0.1)	SBM30	SBM30(0.1)	SBM45	SBM45(0.1)
PA (unit mg^−1 protein)^1	0.039 ± 0.001^c	0.04 ± 0.002^c	0.041 ± 0.001^c	0.04 ± 0.001^c	0.043 ± 0.003^c	0.029 ± 0.001^a	0.035 ± 0.001^b
	90.01 ± 0.17^b	90.77 ± 0.48^b	89.68 ± 0.6^b	90.11 ± 0.42^b	91.34 ± 0.94^b	86.93 ± 0.69^a	87.59 ± 0.69^a
	85.39 ± 0.63^b	89.51 ± 0.23^c	85.78 ± 0.63^b	86.76 ± 0.85^b	88.78 ± 0.5^c	82.32 ± 0.49^a	83.26 ± 0.55^a

Values are means of triplicate groups ± S.E.M. Within a row, means with different letters are significantly different (); means with the same letters are not significantly different ().
¹Protease activity (PA, unit mg⁻¹ protein) in the digestive tract; apparent digestibility coefficients (ADC %). ²For crude protein; ³for lipid, respectively.