The Evaluation of Growth Performance of Three Largemouth Bass Strains Based on Indoor Recirculating Aquaculture System

doi:10.11924/j.issn.1000-6850.casb2020-0444

Abstract

Abstract:

The present trial was conducted to evaluate the growth performance of three largemouth bass Micropterus salmoides strains based on indoor recirculating aquaculture system. M. salmoides juveniles of the three stains, including ‘Youlu No.1’, ‘Youlu No.3’ and ‘Zhelu No.2’ were assigned randomly into 9 tanks with triplicate tanks for each stain respectively. Each tank had 30 fish (initial body weight 6.08±0.12g) and the feeding trial lasted 8 weeks. The results showed that the survival rate was all above 98.89% (P>0.05); the body weight gain ranked as ‘Youlu No.3’>‘Youlu No.1’>‘Zhelu No.2’ without significant differences (P>0.05); while the lowest variable coefficients of body length and weight were both observed in ‘Zhelu No.2’(P>0.05). The morphological indices among the three strains showed no significant differences (P>0.05). The higher feed coefficient rate and protein efficiency ratio were found in ‘Zhelu No.2’ and ‘Youlu No.3’, respectively (P<0.05). There was no significant difference of dorsal muscle composition and amino acids’ content among the three stains (P>0.05). The activities of trypsin in gut and liver were significantly lower in ‘Zhelu No.2’ than those in other stains (P<0.05). Ten parameters contents in serum maintained stability and no statistic difference existed among the three stains (P>0.05). The data generated from the current trial suggest that M. salmoides is an appropriate fish species for indoor recirculating aquaculture, and ‘Youlu No.3’ shows relative better growth performance in the present system. ‘Zhelu No.2’ also shows very considerable body weight gain, nutrient composition as well as resistance when compared with ‘Youlu’ stains, providing good potential as a breeding population.

Key words: Micropterus salmoides, strains, growth, feed utilization, nutrient composition, digestive enzyme activities, serum parameters, recirculating aquaculture system

CLC Number:

S964

Zhou Fan, Peng Jian, Chen Liupu, Zhu Ningyu, Yao Gaohua, Bei Yijiang, Ma Wenjun, Ding Xueyan. The Evaluation of Growth Performance of Three Largemouth Bass Strains Based on Indoor Recirculating Aquaculture System[J]. Chinese Agricultural Science Bulletin, 2021, 37(24): 159-164.

Figures/Tables 5

References 33

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指标	处理组
指标	YL1	YL3	ZL2
初始体重/g	6.10 ± 0.17	6.13 ± 0.09	6.01 ± 0.08
存活率/%	100.00 ± 0.00	100.00 ± 0.00	98.89 ± 1.92
末体长/cm	13.37 ± 0.52	13.40 ± 0.50	13.67 ± 0.45
末体长变异系数/%	3.89	3.73	3.29
末体重/g	55.17 ± 3.09	57.01 ± 1.37	53.08 ± 1.15
末体重变异系数/%	5.61	2.40	2.17
肥满度/(g/cm³)	2.30±0.05	2.36±0.18	2.29 ±0.13
肝体比/%	2.03±0.27	2.15±0.17	2.04 ± 0.33
脏体比/%	9.42±0.50	9.36±0.38	9.11±0.56
肠脂比/%	2.84±0.29	3.00±0.25	2.59±0.12
增重率/%	804.42±33.85	829.53±18.64	782.86±25.68
特定生长率/(%/d)	4.00±0.07	4.05±0.04	3.96±0.05
日均摄食量/[g/(鱼·d)]	0.70±0.03	0.68±0.01	0.72±0.01
饲料系数	0.79±0.02^b	0.74±0.01^b	0.84±0.03^a
蛋白质效率/%	2.83±0.06^b	3.02±0.03^a	2.64±0.10^c

指标	处理组
指标	YL1	YL3	ZL2
初始体重/g	6.10 ± 0.17	6.13 ± 0.09	6.01 ± 0.08
存活率/%	100.00 ± 0.00	100.00 ± 0.00	98.89 ± 1.92
末体长/cm	13.37 ± 0.52	13.40 ± 0.50	13.67 ± 0.45
末体长变异系数/%	3.89	3.73	3.29
末体重/g	55.17 ± 3.09	57.01 ± 1.37	53.08 ± 1.15
末体重变异系数/%	5.61	2.40	2.17
肥满度/(g/cm³)	2.30±0.05	2.36±0.18	2.29 ±0.13
肝体比/%	2.03±0.27	2.15±0.17	2.04 ± 0.33
脏体比/%	9.42±0.50	9.36±0.38	9.11±0.56
肠脂比/%	2.84±0.29	3.00±0.25	2.59±0.12
增重率/%	804.42±33.85	829.53±18.64	782.86±25.68
特定生长率/(%/d)	4.00±0.07	4.05±0.04	3.96±0.05
日均摄食量/[g/(鱼·d)]	0.70±0.03	0.68±0.01	0.72±0.01
饲料系数	0.79±0.02^b	0.74±0.01^b	0.84±0.03^a
蛋白质效率/%	2.83±0.06^b	3.02±0.03^a	2.64±0.10^c

指标	处理组
指标	YL1	YL3	ZL2
水分	77.81±1.33	77.99±0.98	78.29±0.78
粗蛋白	19.12±1.05	19.10±0.34	19.14±1.42
粗脂肪	1.74±0.04	1.63±0.17	1.35±0.11
粗灰分	1.17±0.13	1.25±0.25	1.19±0.17

指标	处理组
指标	YL1	YL3	ZL2
水分	77.81±1.33	77.99±0.98	78.29±0.78
粗蛋白	19.12±1.05	19.10±0.34	19.14±1.42
粗脂肪	1.74±0.04	1.63±0.17	1.35±0.11
粗灰分	1.17±0.13	1.25±0.25	1.19±0.17

指标	处理组
指标	YL1	YL3	ZL2
必需氨基酸 EAAs
赖氨酸 Lys	1.48±0.04	1.47±0.06	1.47±0.05
精氨酸 Arg	1.07±0.06	1.07±0.06	1.07±0.06
蛋氨酸 Met	0.53±0.03	0.54±0.02	0.54±0.01
组氨酸 His	0.47±0.01	0.46±0.01	0.44±0.02
亮氨酸 Leu	1.48±0.07	1.50±0.04	1.50±0.04
异亮氨酸 Ile	0.85±0.03	0.84±0.02	0.83±0.02
苯丙氨酸 Phe	0.79±0.05	0.76±0.01	0.76±0.03
苏氨酸 Thr	0.83±0.05	0.80±0.02	0.79±0.02
缬氨酸 Val	0.86±0.04	0.84±0.02	0.83±0.02
非必需氨基酸 NEAAs
谷氨酸 Glu	2.66±0.14	2.57±0.07	2.57±0.05
天冬氨酸 Asp	1.84±0.06	1.81±0.05	1.80±0.04
甘氨酸 Gly	0.92±0.04	0.90±0.01	0.90±0.03
丙氨酸 Ala	1.05±0.06	1.03±0.02	1.06±0.11
丝氨酸 Ser	0.74±0.08	0.69±0.02	0.69±0.01
脯氨酸 Pro	0.57±0.04	0.57±0.02	0.59±0.06
酪氨酸 Tyr	0.62±0.06	0.65±0.03	0.64±0.03
必需氨基酸总和 ∑EAAs	8.34±0.24	8.12±0.18	8.23±0.23
非必需氨基酸总和 ∑NEAAs	8.39±0.35	8.22±0.18	8.21±0.31
鲜味氨基酸总和 ∑DAAs	6.47±0.08	6.31±0.04	6.33±0.05
必需氨基酸/总氨基酸 ∑EAAs/∑TEAAs	0.50±0.01	0.49±0.02	0.50±0.01
鲜味氨基酸/总氨基酸 ∑DAAs/∑TEAAs	0.39±0.02	0.39±0.01	0.38±0.01