Effects of Feeding Mode on Growth Performance, Nutrient Digestibility and Cecal Microbial Diversity of Dezhou Donkeys

LIU Guiqin; Gerelchimeg; ZHANG Xinzhuang; XING Jingya; QU Honglei; WANG Tao; SU Shaofeng; LIU Mingli; ZHAO Yiping; Manglai

doi:10.3969/j.issn.1006-267x.2020.02.026

Chinese Journal of Animal Nutrition >

2020 , Vol. 32 >Issue 2: 706 - 714

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.02.026

RUMINANT AND HERBIVORE NUTRITION AND FEED

Effects of Feeding Mode on Growth Performance, Nutrient Digestibility and Cecal Microbial Diversity of Dezhou Donkeys

LIU Guiqin ,
Gerelchimeg ,
ZHANG Xinzhuang ,
XING Jingya ,
QU Honglei ,
WANG Tao ,
SU Shaofeng ,
LIU Mingli ,
ZHAO Yiping ,
Manglai

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1. Equine Research Center, Inner Mongolia Key Laboratory of Equine Genetics, Breeding and Reproduction, Scientific Observing and Experimental Station of Equine Genetics, Breeding and Reproduction, Ministry of Agriculture and Rural Affairs, College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China;
2. Shandong Engineering Technology Research Center for Efficient Breeding and Ecological Feeding of Black Donkey, Shandong Donkey Industry Technology Collaborative Innovation Center, Agricultural College, Liaocheng University, Liaocheng 252059, China;
3. National Engineering Research Center for Gelatin-Based Traditional Chinese Medicine, Dong-E-E-Jiao Co., Ltd., Donge 252201, China

Received date: 2019-07-31

Online published: 2020-02-21

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Abstract

This experiment was conducted to study the effects of feeding mode on the growth performance, nutrient digestibility and cecal microbial diversity of Dezhou donkeys. Fifteen healthy male Dezhou donkeys about the age of 2 years with similar body weight[(215±10) kg] were randomly divided into three groups, which were group C1 (fed concentrate after roughage), group C2 (fed roughage after concentrate) and group C3[fed total mixed ration (TMR)]. Each group had 5 donkeys. The adaptation period lasted for 7 days and the formal period lasted for 75 days. The results showed as follows:1) the average daily gain of group C2 was significantly higher than that of groups C1 and C3 (P ≤ 0.01). The digestibility of dry matter and acid detergent fiber of group C1 was the highest, the group C3 was the second, the group C2 was the lowest, and there was a significant difference between groups C1 and C2 (P ≤ 0.05). 2) Feeding mode had some influences on the composition of cecal microbes of Dezhou donkeys. At the level of phylum, Firmicutes and Bacteroidetes (accounting for more than 75%) were dominant in cecal microbes of each group, followed by Spirochaetes, Proteobacteria, Fibrobacteres. The relative abundance of Firmicutes of group C2 was higher than that of groups C1 and C3. At the level of genus, after clustered the genus which had lower abundance than 1% into other (accounting for more than 75%) during the 401 genera, the other was dominant genus in each group. Subsequently, followed by unidentified-Spirochaetaceae and Anaerovirbrio in group C1, Anaerovirbrio and Streptococcu in group C2, and Lactobacillus and unidentified-Spirochaetaceae in group C3. 3) Through UPGMAA clustering tree, principal component analysis and species difference analysis, it was found that the cecal microbial composition of three groups of Dezhou donkeys was different, and C2 group was obviously different from the other two groups, while groups C1 and C3 could be grouped together. In conclusion, the feeding mode has significant effects on the average daily gain and the digestibility of dry and acid detergent fiber. Also, the feeding mode can change the cecal microbial composition of Dezhou donkeys.

Key words： feeding mode; Dezhou donkeys; growth performance; nutrient digestibility; cecum; microbial diversity

Cite this article

LIU Guiqin , Gerelchimeg , ZHANG Xinzhuang , XING Jingya , QU Honglei , WANG Tao , SU Shaofeng , LIU Mingli , ZHAO Yiping , Manglai . Effects of Feeding Mode on Growth Performance, Nutrient Digestibility and Cecal Microbial Diversity of Dezhou Donkeys[J]. Chinese Journal of Animal Nutrition, 2020 , 32(2) : 706 -714 . DOI: 10.3969/j.issn.1006-267x.2020.02.026

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