Effects of Different Ratios of Ginger Straw Substituted for Peanut Seedling in Diets on Gastrointestinal Development, Cecal Fermentation and Cecal Microflora of Laiwu Black Rabbits

SUN Haitao; WANG Yong; LIU Gongyan; XU Yunhua; ZHAO Guisheng; XUE Haipeng; LI Meng

doi:10.3969/j.issn.1006-267x.2021.05.045

2021 , Vol. 33 >Issue 5: 2875 - 2886

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.05.045

Effects of Different Ratios of Ginger Straw Substituted for Peanut Seedling in Diets on Gastrointestinal Development, Cecal Fermentation and Cecal Microflora of Laiwu Black Rabbits

SUN Haitao ,
WANG Yong ,
LIU Gongyan ,
XU Yunhua ,
ZHAO Guisheng ,
XUE Haipeng ,
LI Meng

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1. Shandong Key Laboratory of Animal Disease Control and Breeding, Animal Husbandry and Veterinary Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China;
2. Shandong Province Jinan Animal Husbandry Technology Extension Station, Jinan 250100, China;
3. Jinan Laiwu Black Rabbit Seed Industry Technology Co., Ltd., Jinan 250100, China

Received date: 2020-11-06

Online published: 2021-05-14

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Abstract

This experiment was conducted to investigate the effects of different ratios of ginger straw substituted for peanut seedling in diets on gastrointestinal development, histological structure of small intestine, cecal fermentation and cecal microflora of Laiwu black rabbits. A total of 160 fattening Laiwu black rabbits at 45 days of age were randomly divided into 4 groups with 5 replicates in each group and each replicate contained 8 rabbits. Rabbits in the 4 groups were fed diets with 0 (group A), 5% (group B), 10% (group C) and 15% (group D) ginger straws replacing peanut seedlings diets, respectively. The trial lasted for 7 days for adaptation, and 47 days for test. The results showed as follows:1) different ratios of ginger straw substituted for peanut seedling in diets had significant effects on the relative weight of stomach, stomach contents and large intestine contents (P<0.05), among which the relative weight of stomach in group C and group D was significantly higher than that in group B and group A (P<0.05); the relative weight of gastric content in group D was significantly higher than that in other groups (P<0.05); the relative weight of large intestine content in groups B, C and D was significantly higher than that in group A (P<0.05). 2) Different ratios of ginger straw substituted for peanut seedling in diets had significant effects on the thickness of intestinal muscle layer (P<0.05), and group D was significantly higher than others groups (P<0.05). 3) The contents of acetic acid, propionic acid, butyric acid and acetic acid/(propionic acid+butyric acid) in cecal contents of Laiwu black rabbits were significantly different (P<0.05). The acetic acid content and acetic acid/(propionic acid+butyric acid) in group D were significantly higher than those in other groups (P<0.05), while the contents of propionic acid and butyric acid were significantly lower than those in groups A and B (P<0.05). 4) The dominant microbial composition of cecal contents in Laiwu black rabbits was Firmicutes, Bacteroidetes, Tenericutes, and there were significant differences in Shannon index between group D and group A (P<0.05), indicating that high level of ginger straw instead of peanut seedling could affect the microflora of cecal contents. In conclusion, replacing peanut seedling with the optimum level (5% to 10%) of ginger straw in diets has no obvious adverse effects on gastrointestinal development, intestinal histological structure, cecal fermentation and cecal content microflora of Laiwu black rabbits. Therefore, ginger straw can be used as a raw material for rabbit feed.

Key words： ginger straws; Laiwu black rabbits; gastrointestinal development; intestine histological structure; cecal fermentation; intestinal microflora

Cite this article

SUN Haitao , WANG Yong , LIU Gongyan , XU Yunhua , ZHAO Guisheng , XUE Haipeng , LI Meng . Effects of Different Ratios of Ginger Straw Substituted for Peanut Seedling in Diets on Gastrointestinal Development, Cecal Fermentation and Cecal Microflora of Laiwu Black Rabbits[J]. Chinese Journal of Animal Nutrition, 2021 , 33(5) : 2875 -2886 . DOI: 10.3969/j.issn.1006-267x.2021.05.045

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