Production Response and Digestive Enzymatic Activity of the Pacific White Shrimp Litopenaeus vannamei (Boone, 1931) Intensively Pregrown in Microbial Heterotrophic and Autotrophic-Based Systems

Table 1

Means ± SD of the environmental variables during the pregrowth of L. vannamei in the autotrophic (AS), heterotrophic (H), and the control systems.

	Temperature (°C)	Salinity (PSU)	DO (mg·L^−1)	pH	Chlorophyll-a (mg·m^−3)
C	31.7±1.13^a	37.3±0.57^a	6.2±3.7^a	7.8±0.2^a	166.9±119.5^a
AS	31.7±1.19^a	37.5±0.67^a	6.5±4.2^a	7.7±0.2^a	261.9±158.2^a
HS	30.5±0.65^a	36.3±0.77^a	6.5±3.1^a	7.5±0.13^b	5.5±3.6^b

Different letters in the same column indicate significant differences (𝑃<0.05).