Effects of Tannic Acid on Fur Quality, Immune Organ Development and Antioxidant Capacity of Growing Rex Rabbits

CHEN Saijuan; LIU Yajuan; ZHI Yongwei; ZHAO Yuxing; ZHANG Bin; GU Xinxi; GU Zilin

doi:10.3969/j.issn.1006-267x.2019.11.030

Chinese Journal of Animal Nutrition >

2019 , Vol. 31 >Issue 11: 5151 - 5156

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.11.030

Effects of Tannic Acid on Fur Quality, Immune Organ Development and Antioxidant Capacity of Growing Rex Rabbits

CHEN Saijuan ,
LIU Yajuan ,
ZHI Yongwei ,
ZHAO Yuxing ,
ZHANG Bin ,
GU Xinxi ,
GU Zilin

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1. Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding 071001, China;
2. Mountainous Area of Hebei Province Agricultural Engineering Technology Research Center, Baoding 071001, China;
3. Inner Mongolia Dongda Rex Rabbit Circulation Industry Research Institute, Inner Mongolia Dongda Biological Technology Co., Ltd., Ordos 014300, China;
4. Zhuolu Guangyi Rabbit Industry Professional Cooperative, Zhangjiakou 075600, China;
5. Shijiazhuang Veterinary Biological Products Supply Station, Shijiazhuang 050000, China;
6. College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China

Received date: 2019-04-22

Online published: 2019-11-19

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Abstract

This experiment was conducted to investigate the effects of tannic acid on fur quality, immune organ development and antioxidant capacity of growing Rex rabbits. One hundred and fifty 55-day-old healthy Rex rabbits (half male and half female) were randomly allocated into 5 groups with 30 in each group. The rabbits in control group were fed a basal diet, while the rabbits in experimental groups were fed the basal diet supplemented with 0.05%, 0.10%, 0.15% and 0.20% tannic acid, respectively. The pre-feeding period lasted for 5 d followed by an experimental period of 60 d. The results showed as follows:1) adding tannic acid to the diet did not significantly affect the wool density, wool fineness, coarse rate and leather weight of the growing Rex rabbits (P>0.05). 2) Compared with the control group, the wool length of experimental groups were increased to different degrees, and the wool length of the 0.10% tannic acid group was significantly higher than that of the control group (P<0.05). 3) Compared with the control group, the leather area of experimental groups were decreased, but no significant differences in them were found among all groups (P>0.05). 4) There was no significant difference in the leather thickness of experimental groups compared with the control group (P>0.05). 5) Compared with the control group, the spleen index, thymus index and pancreatic index of experimental groups were increased, but no significant differences in them were found among all groups (P>0.05). 6) The serum total superoxide dismutase (T-SOD) activity were increased and the serum malondialdehyde (MDA) content of experimental groups were decreased compared with the control group. Among them, the serum T-SOD activity of the 0.10%, 0.15% and 0.20% tannic acid groups was significantly higher than that of the control group (P<0.05), and the serum MDA content of the 0.15% and 0.20% tannic acid groups was significantly lower than that of the control group (P<0.05). It is concluded that adding tannic acid to the diet can improve the immune organ development and antioxidant capacity, and has no negative effect on the fur quality of growing Rex rabbits.

Key words： tannic acid; growing Rex rabbits; fur quality; immune organ indices; antioxidant capacity

Cite this article

CHEN Saijuan , LIU Yajuan , ZHI Yongwei , ZHAO Yuxing , ZHANG Bin , GU Xinxi , GU Zilin . Effects of Tannic Acid on Fur Quality, Immune Organ Development and Antioxidant Capacity of Growing Rex Rabbits[J]. Chinese Journal of Animal Nutrition, 2019 , 31(11) : 5151 -5156 . DOI: 10.3969/j.issn.1006-267x.2019.11.030

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