Cecropin：Effects on Growth Performance, Non-Specific Immunity and Disease Resistance of Triploid Crucian Carp

WANG Zirui; QIAO Shiyan; LI Bo; RUAN Jiming; WEI Lili; YANG Zhuqing

doi:10.3969/j.issn.1006-267x.2014.07.018

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 7: 1856 - 1863

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.07.018

Aquaculture Nutrition

Cecropin：Effects on Growth Performance, Non-Specific Immunity and Disease Resistance of Triploid Crucian Carp

WANG Zirui ,
QIAO Shiyan ,
LI Bo ,
RUAN Jiming ,
WEI Lili ,
YANG Zhuqing

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1. College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China;
2. National Feed Engineering Technology Research Center, Beijing 100193, China;
3. Beijing Sinagri YinThai Biotechnology Co., Ltd., Beijing 100193, China

Received date: 2014-02-19

Online published: 2014-07-01

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Abstract

This experiment was to investigate the effects of cecropin in diets on growth performance, non-specific immune function and immunoprotective rate of triploid crucian carp. A total of 1 242 tails triploid crucian carp with an average body weight of (46.14±0.13) g were randomly allocated into 6 groups with 3 replicates per group, and fed with basal diet (control), basal diet supplemented with 4 mg/kg aureomycin, basal diet supplemented with 100, 150, 200, and 250 mg/kg cecropin, respectively. The above diets contained the same crude protein level (32.27%) and metabolizable energy level (12.85 MJ/kg). The experiment lasted for 8 weeks. After 8 weeks, the growth, immunity and body indices were measured. The results showed as follows: 1) final body weight (FBW), weight growth rate (WGR) and specific growth rate (SGR) in 150 mg/kg group were increased by 15.0%, 37.4% and 27.5%, respectively, compared with control group (P0.05). 4) Crude lipid content in muscle in 250 mg/kg group was lower than that in control group (P0.05). 5) The artificial infection with Aeromonas hydrophila caused mortality in all groups, and the mortality of triploid crucian carp was low in 48 h, while the mortality reached the peak between 48 to 72 h. Compared with control group, the survival ratio in cecropin groups were obviously higher. Together, our results indicate that diets supplemented with cecropin can improve triploid crucian carp growth performance, and the effects of 150 and 200 mg/kg cecropin are better, which improve non-specific immunity function and disease resistance.

Key words： cecropin; triploid crucian carp; non-specific immunity; antioxidation; disease resistance

Cite this article

WANG Zirui , QIAO Shiyan , LI Bo , RUAN Jiming , WEI Lili , YANG Zhuqing . Cecropin：Effects on Growth Performance, Non-Specific Immunity and Disease Resistance of Triploid Crucian Carp[J]. Chinese Journal of Animal Nutrition, 2014 , 26(7) : 1856 -1863 . DOI: 10.3969/j.issn.1006-267x.2014.07.018

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