Table 4.

Body weight (BW [g/shrimp]), weight uniformity (UNI [%]), shrimp length (SL [mm]), length uniformity (LU [%]), feed intake (FI [g/shrimp]), body weight gain (BWG [g/shrimp]), feed conversion ratio (FCR [g/g]), length-to-weight ratio (g/mm), final weight-to-initial weight ratio (FBW/IBW), and survival (SURV [%]) during the 80 days after nursery phase (grow-out phase) of shrimp fed increasing levels of protected sodium butyrate (PSB).

PSB (kg/t)	BW	UNI	SL	LU	FI	BWG	FCR	MMG	FBW/IBW	SURV
PSB|0 kg/t	11.196 ± 1.024c	79.375 ± 2.066b	123.225 ± 3.409b	87.125 ± 2.078	18.693 ± 1.076	10.461 ± 1.031c	1.804 ± 0.225a	11.070 ± 0.817a	15.257 ± 1.580b	82.231 ± 1.305b
PSB|2 kg/t	14.836 ± 0.538b	83.250 ± 3.594a,b	136.175 ± 1.595a	87.850 ± 0.420	17.560 ± 0.214	14.001 ± 0.214b	1.255 ± 0.046b	9.185 ± 0.223b	17.835 ± 1.015a,b	86.626 ± 1.024a
PSB|4 kg/t	15.884 ± 0.341a,b	85.250 ± 4.924a,b	137.750 ± 3.307a	87.875 ± 0.655	18.101 ± 0.483	15.050 ± 0.483a,b	1.204 ± 0.057b	8.674 ± 0.213b,c	19.182 ± 2.059a	88.875 ± 3.023a
PSB|8 kg/t	17.239 ± 0.349a	86.500 ± 3.000a	138.150 ± 4.414a	88.125 ± 1.307	17.470 ± 0.612	16.385 ± 0.612a	1.067 ± 0.042b	8.015 ± 0.249c	20.207 ± 0.55a	89.410 ± 1.859a
p-Value	<0.001	0.0087	<0.001	0.6907	0.0642	<0.001	<0.001	<0.001	0.0002	<0.001
SEM	0.3493	1.5172	1.5697	0.7129	0.3708	0.3503	0.07175	0.2651	0.6837	0.8499
Linear	<0.001	0.005	<0.001	0.383	0.08	<0.001	<0.001	<0.001	<0.001	<0.001
Quadratic	<0.001	0.173	<0.001	0.665	0.502	<0.001	0.002	0.003	0.063	0.004
C.V. (%)	5.31	3.92	2.55	0.762	4.38	5.64	10.75	5.90	8.33	2.12

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

Abbreviation: SEM, standard error of the mean.