Relationship between the true digestibility of dietary calcium and gastrointestinal microorganisms in goats

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Abstract

The current study was performed to examine the relationship between the true digestibility of calcium (TDC) in the diet and bacterial community structure in the gastrointestinal tract (GIT) of goats. Twenty-six Nubian healthy female goats were selected as experimental animals, and their TDC was determined using metabolic experiments. Eight goats were grouped into the high digestibility of Calcium (HC) phenotype, and another eight were grouped into the low digestibility of Calcium (LC) phenotype. Their bacterial 16S rRNA gene amplicons from the rumen, abomasum, jejunum, cecum, and colon contents were sequenced using next-generation high-throughput sequencing technology. In the rumen, 239 genera belonging to 23 phyla, 319 genera belonging to 30 phyla in the abomasum, 248 genera belonging to 36 phyla in the jejunum, 248 genera belonging to 25 phyla in the colon and 246 genera belonging to 23 phyla in the cecum were detected. In addition, there was a significant correlation between the TDC and the relative abundance of Candidatus_Saccharimonas, Christensenellaceae_R-7_group, Mogibacterium, Prevotella_1, Prevotella_UCG_004, Ruminococcus_2, Saccharibacteria in the rumen, Eubacterium_coprostanoligens_group, Lachnospiraceae_ND3007_group, Lachnospiraceae_NK3A20_group, p-1088-a5_gut_group, and Planctomycetes in the abomasum, Butyrivibrio in the cecum, and Fibrobacter in the cecum were observed. This study suggests an association of GIT microbial communities as a factor influencing TDC in goats.

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Liu, Y., Shah, A. M., Wang, L., Jin, L., Wang, Z., Xue, B., & Peng, Q. (2020). Relationship between the true digestibility of dietary calcium and gastrointestinal microorganisms in goats. Animals, 10(5). https://doi.org/10.3390/ani10050875

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