Table 3.

Final length (FL [mm]), length gain (LG), length-to-weight ratio (W/L [mg/mm]), feed intake (FI [mg/shrimp]), initial live weight of PL30 (IBW [mg]), final body weight of PL65 (FBW [mg]), body weight gain (BWG [mg/shrimp]), feed conversion ratio (FCR [mg/mg]), final weight-to-initial weight ratio (FBW/IBW), and survival (SURV [%]) during the 35 days, from PL30 to PL65 (nursery phase), of shrimp fed increasing levels of protected sodium butyrate (PSB).

PSB (kg/t)	FL	LG	W/L	FI	IBW	FBW	BWG	FCR	FBI/IBW	SURV
PSB|0 kg/t	49.525 ± 0.667b	24.363 ± 0.962b	14.840 ± 0.362b	557.621 ± 34.488	93.009 ± 2.166	735.156 ± 27.327b	642.148 ± 28.008b	0.870 ± 0.062a	7.910 ± 0.389c	77.684 ± 2.158b
PSB|2 kg/t	51.075 ± 2.371a	25.950 ± 2.136a,b	16.323 ± 0.701a	531.646 ± 25.888	94.365 ± 3.191	834.653 ± 70.089a	740.288 ± 70.248a	0.721 ± 0.055b	8.853 ± 0.821b	87.795 ± 0.591a
PSB|4 kg/t	51.513 ± 0.881a	26.288 ± 1.488a	16.418 ± 0.733a	539.886 ± 24.903	94.638 ± 1.732	846.031 ± 48.037a	751.394 ± 49.048a	0.720 ± 0.048b	8.946 ± 0.618b	87.942 ± 2.644a
PSB|8 kg/t	51.550 ± 1.061a	26.775 ± 1.812a	16.563 ± 0.637a	538.563 ± 51.267	92.673 ± 7.986	853.354 ± 18.695a	760.681 ± 17.498a	0.708 ± 0.070c	9.259 ± 0.803a	89.415 ± 5.336a
p-Value	0.0386	0.0658	0.0017	0.6229	0.8539	0.0015	0.0018	0.0005	0.0184	<0.001
SEM	0.552	0.656	0.296	16.332	1.617	20.233	20.401	0.027	0.278	1.524
Linear	0.0041	0.0390	0.0050	0.5770	0.8110	0.0040	0.0040	0.0030	0.0140	<0.001
Quadratic	0.1230	0.2860	0.0620	0.4740	0.4050	0.0440	0.0530	0.0130	0.2840	0.0030
C.V. (%)	2.5000	5.9200	2.3500	6.4900	4.3400	3.8700	6.7100	7.7600	7.7900	3.8000

Note: The letters a, b, and c in the columns indicate statistical differences by the Tukey test.

Abbreviation: SEM, standard error of the mean.