Application of Formula Feed in Intensive Culture Modes of Mastacembelus Aculeatus with Different Stocking Densities

doi:10.11924/j.issn.1000-6850.casb20190600264

Abstract

Abstract:

The objective is to investigate the effects of different stocking densities on growth performance and ingestion behavior of Mastacembelus aculeatus. 310-day single-factor intensive test in cement pit was used to compare the growth performance and characteristics of Mastacembelus aculeatus at the initial density of 657.52 g/m³ (group A) and 1177.27 g/m³ (group B). The results showed a negative correlation between growth characteristics and stocking density, the weight gain rate (WGR), special growth rate (SGR), fatness and survival rate of group A were higher than those of group B, while the feed conversion rate (FCR) and yield per unit area were 13.82% and 30.77% lower than that of group B. The body length of group A and B were power function related to body weight, and the relationship was W=0.0028L^3.041 and W=0.0049L^2.953 respectively, which indicated that they had equal growth rate. The body length and body weight were correlated with breeding days by multiple function, which were L=-8×10^-5d²+0.07758d+13.059, W=-2×10^-6d³+0.0011d²+0.1369d+7.2355 in group A, L=-6×10^-5d²+0.062d+12.379, W=-2×10^-6d³+0.001d²+0.1031d+6.8031 in group B. The condition was suitable for large-scale production of Mastacembelus aculeatus. We should refine the stocking density and find the relationship between the best yield and feed utilization, to obtain the highest benefit.

Key words: Mastacembelus aculeatus, growth performance, stocking density, formula feed, feed conversion ratio

CLC Number:

S963.73

Zhang Kun, Fan Haiping, Qiu Manli, Zhang Jiaonan, Hu Bing, Xue Linzhan, Chen Bin, Zhong Quanfu. Application of Formula Feed in Intensive Culture Modes of Mastacembelus Aculeatus with Different Stocking Densities[J]. Chinese Agricultural Science Bulletin, 2020, 36(21): 126-131.

Figures/Tables 5

References 22

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组别	末均重/g	增重率/%	特定生长率/%	饲料系数	肥满度	存活率/%	单位面积产量/(kg/m²)
A	81.69	1080.43	0.80	1.06	0.38	96.06	5.22
B	66.59	862.25	0.73	1.23	0.32	95.10	7.54

组别	末均重/g	增重率/%	特定生长率/%	饲料系数	肥满度	存活率/%	单位面积产量/(kg/m²)
A	81.69	1080.43	0.80	1.06	0.38	96.06	5.22
B	66.59	862.25	0.73	1.23	0.32	95.10	7.54

天数/d	低密度组(A)				高密度组(B)
天数/d	体重/g	体日增重/(g/d)	体长/cm	体日增长/(cm/d)	体重/g	体日增重/(g/d)	体长/cm	体日增长/(cm/d)
0	6.90	-	12.71	-	6.90	-	12.71	-
60	18.76	0.201	16.41	0.063	16.06	0.155	15.38	0.045
120	34.06	0.251	20.42	0.066	26.77	0.176	18.33	0.048
180	54.25	0.342	24.66	0.072	43.62	0.286	21.63	0.056
240	68.31	0.214	27.11	0.040	57.17	0.222	23.64	0.033
310	81.69	0.205	28.63	0.022	66.59	0.135	25.10	0.021

天数/d	低密度组(A)				高密度组(B)
天数/d	体重/g	体日增重/(g/d)	体长/cm	体日增长/(cm/d)	体重/g	体日增重/(g/d)	体长/cm	体日增长/(cm/d)
0	6.90	-	12.71	-	6.90	-	12.71	-
60	18.76	0.201	16.41	0.063	16.06	0.155	15.38	0.045
120	34.06	0.251	20.42	0.066	26.77	0.176	18.33	0.048
180	54.25	0.342	24.66	0.072	43.62	0.286	21.63	0.056
240	68.31	0.214	27.11	0.040	57.17	0.222	23.64	0.033
310	81.69	0.205	28.63	0.022	66.59	0.135	25.10	0.021