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:
chendong_326@126.com
Abstract
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,
2021. Physiological variation in ruminal microbiota under altered energy levels
in starter ration of suckling Angus calves.
Pak Vet J, 41(3): 409-413. http://dx.doi.org/10.29261/pakvetj/2021.018