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Physiological Variation in Ruminal Microbiota under Altered Energy Levels in Starter Ration of Suckling Angus Calves
Dong Chen1*, Gang Zhong1, Huewei Su2, Muhammad Aziz ur Rahman3, Kun Chen1, Jing Tang1 and Fuqiang Li4

1College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410130, China
2College of Animal Science and Technology, China Agricultural University, China
3Institute of Animal and Dairy Sciences, University of Agriculture, Faisalabad, 35200, Pakistan
4Hunan Tianhua Industrial Co., Ltd, Loudi, 417000, China
*Corresponding author:


The present study aim was to see the effects of different starter rations energy levels in the diet on ruminal microbial diversity, bacterial community structure and microbial diversity indices of rumen bacterial communities in Angus calves. For this, 18 suckling Angus calves were distributed into 3 different treatment groups. Dietary treatments were: Low metabolizable energy ration (LME); Medium metabolizable energy ration (MME) and High metabolizable energy ration (HME). Results of bacterial community revealed that most abundant phylum was Firmicute. At phyla level, TM7 and Fibrobacteres showed significant higher relative abundance in LME group than HME group. Under different dietary energy, 59 genera showed significant correlation with physiological production parameters. These results provide new information for the understanding of the dietary energy level effect on ruminal microbial community interactions and are of great importance for optimizing energy supply strategy for suckling calves.

To Cite This Article: Chen D, Zhong G, Su H, Rahman MAU, Chen K, Tang J, Li, F, xxx. Physiological variation in ruminal microbiota under altered energy levels in starter ration of suckling Angus calves. Pak Vet J.


ISSN 0253-8318 (Print)
ISSN 2074-7764 (Online)