The Effects of Dietary Thyme Oil (Thymus vulgaris) Essential Oils for Common Carp (Cyprinus carpio): Growth Performance, Digestive Enzyme Activity, Antioxidant Defense, Tissue and Mucus Immune Parameters, and Resistance against Aeromonas hydrophila

Table 2

Growth performance of common carp fed four experimental diets over 60 days. Values are presented as the mean ± SE.

Parameters	Control	T1	T3	T2
IW (g)	15.24 ± 0.18	15.40 ± 0.24	15.34 ± 0.24	15.48 ± 0.28
FW (g)	39.73 ± 0.62^b	41.31 ± 0.66^ab	41.84 ± 0.82^ab	42.26 ± 0.44^a
WG (g)	24.49 ± 0.80	25.91 ± 0.87	26.50 ± 0.60	26.78 ± 0.33
SGR (% d^-1)	1.59 ± 0.04	1.64 ± 0.05	1.67 ± 0.01	1.67 ± 0.02
FCR	1.75 ± 0.02^a	1.59 ± 0.03^b	1.58 ± 0.03^b	1.57 ± 0.01^b
SR (%)	93.00 ± 0.57^b	100.00 ± 0.00^a	100.00 ± 0.00^a	100.00 ± 0.00^a

IW: initial weight (g); FW: final weight (g); WG: weight gain; SGR: specific growth rate; FCR: feed conversion ratio; SR: survival rate. Different letters (a–b) in the same row indicate significant differences ().