. 2024 Feb 6;11:1363411. doi: 10.3389/fnut.2024.1363411

Table 3.

Growth performance and feed utilization of rainbow trout fed diets with different types and levels of rapeseed meal.

Diets	FBW (g)	FI (g/kg MWB/d)^a	WGR^b	DGC (%/day)^c	FCR^d	PER^e	SR (%)^f	VSI (%)^g	HSI (%)^h
Control	94.91 ± 0.79^e	10.57 ± 0.26^abc	6.28 ± 0.04^e	2.55 ± 0.02^e	1.19 ± 0.04^a	2.05 ± 0.06^c	97.33 ± 1.33^b	4.10 ± 0.13^a	0.90 ± 0.03^ab
C95RM20	80.60 ± 1.83^d	11.35 ± 0.35^abc	5.30 ± 0.15^d	2.30 ± 0.04^d	1.50 ± 0.06^a	1.59 ± 0.06^b	88.00 ± 0.00^b	4.40 ± 0.13^abc	0.88 ± 0.04^a
C200RM20	78.00 ± 1.88^d	10.63 ± 0.60^abc	5.12 ± 0.14^d	2.25 ± 0.04^cd	1.35 ± 0.09^a	1.80 ± 0.12^bc	94.67 ± 3.53^b	4.29 ± 0.09^ab	0.87 ± 0.04^ab
CPRC20	54.80 ± 1.07^b	9.95 ± 0.27^ab	3.29 ± 0.09^b	1.70 ± 0.03^b	1.61 ± 0.06^a	1.51 ± 0.07^b	94.67 ± 2.67^b	4.39 ± 0.16^ab	1.04 ± 0.05^ab
IRM20	67.69 ± 2.59^c	12.78 ± 0.91^c	4.30 ± 0.20^c	2.02 ± 0.06^c	2.67 ± 0.21^b	0.92 ± 0.07^a	61.33 ± 5.81^a	4.39 ± 0.15^ab	1.11 ± 0.12^bc
CRM20	79.06 ± 0.73^d	10.45 ± 0.36^abc	5.19 ± 0.08^d	2.27 ± 0.02^d	1.31 ± 0.04^a	1.87 ± 0.06^bc	96.00 ± 0.00^b	4.39 ± 0.11^ab	0.85 ± 0.03^a
C95RM35	73.18 ± 2.06^cd	10.75 ± 0.37^abc	4.74 ± 0.18^cd	2.15 ± 0.05^cd	1.51 ± 0.08^a	1.60 ± 0.08^b	88.00 ± 4.00^b	4.48 ± 0.12^abc	0.96 ± 0.05^ab
C200RM35	72.85 ± 0.79^cd	10.16 ± 0.49^ab	4.69 ± 0.07^cd	2.14 ± 0.02^cd	1.38 ± 0.04^a	1.75 ± 0.05^bc	92.00 ± 2.31^b	4.79 ± 0.16^bc	0.99 ± 0.05^ab
CPRC35	50.95 ± 1.34^ab	8.86 ± 0.23^a	3.00 ± 0.11^ab	1.59 ± 0.04^ab	1.56 ± 0.07^a	1.57 ± 0.07^b	92.00 ± 4.62^b	5.08 ± 0.19^c	1.33 ± 0.05^c
IRM35	45.00 ± 3.29^a	12.19 ± 0.60^bc	2.52 ± 0.27^a	1.41 ± 0.10^a	4.12 ± 0.41^c	0.60 ± 0.07^a	60.00 ± 4.62^a	4.73 ± 0.23^abc	1.05 ± 0.05^ab
CRM35	74.74 ± 1.63^cd	10.67 ± 0.57^abc	4.85 ± 0.12^cd	2.18 ± 0.03^cd	1.36 ± 0.08^a	1.80 ± 0.11^bc	98.67 ± 1.33^b	4.22 ± 0.12^ab	0.88 ± 0.03^ab

Values are means ± SEM (n = 3). Means in the same row with different superscripts are significantly different from each other (p < 0.05). FBW, final body weight; MBW, mean metabolic body weight = ((initial weight/1,000)^0.75 + (final weight/1,000)^0.75)/2.

Feed intake (FI, g/kg MBW/d) = 100 × dry feed weight (g)/MBW/experimental period.

Weight gain rate (WGR) = (final weight – initial weight)/ initial weight.

Daily gain coefficient (DGC, %/d) = 100 × (final weight ^1/3– initial weight ^1/3)/experimental period.

Feed conversion ratio (FCR) = dry feed weight (g)/(final weight – initial weight).

Protein efficiency ratio (PER) = (final weight – initial weight)/feed protein intake (g).

Survival rate (SR, %) = 100 × final number of fish/ initial number of fish.

Viscerosomatic index (VSI, %) = 100 × visceral weight (g)/body weight (g).

Hepatosomatic index (HSI, %) = 100 × liver weight (g)/body weight (g).