Comparative analysis of fecal microbial communities in cattle and Bactrian camels

Liang, Ming; Li, Yang; Siriguleng,; Hasi, Surong; He, Jing; Hải, Lê Thanh; Wang, Zhaoxia; Guo, Fucheng; Qiao, X.R.; Jirimutu,

doi:10.1371/journal.pone.0173062

Cited by 21 publications

(25 citation statements)

References 21 publications

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“…The taxonomic assignment revealed that most of predicted genes were assigned to the Bacteroidetes/Chlorobi group. This corroborates results of the bacterial diversity analysis of the dromedary fecal microbiota, based on analyzing the 16s rRNA gene previously reported [ 4 , 6 , 24 ] demonstrating that camel rumen metagenome is dominated by Bacteroidetes and Firmicutes. This denote that, as is other herbivores, bacteria related to those phyla are the predominant fiber degraders in rumen microbiota, producing a large number of plant cell wall degrading enzymes [ 25 , 26 ].…”

Section: Discussionsupporting

confidence: 92%

Two new gene clusters involved in the degradation of plant cell wall from the fecal microbiota of Tunisian dromedary

et al. 2018

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Dromedaries are capable of digesting plant cell wall with high content of lignocellulose of poor digestibility. Consequently, their intestinal microbiota can be a source of novel carbohydrate-active enzymes (CAZymes). To the best of our knowledge, no data are available describing the biochemical analysis of enzymes in dromedary intestinal microbiota. To investigate new hydrolytic enzymes from the dromedary gut, a fosmid library was constructed using metagenomic DNA from feces of non-domestic adult dromedary camels living in the Tunisian desert. High-throughput functional screening of 13756 clones resulted in 47 hit clones active on a panel of various chromogenic and non-chromogenic glycan substrates. Two of them, harboring multiple activities, were retained for further analysis. Clone 26H3 displayed activity on AZO-CM-cellulose, AZCL Carob galactomannan and Tween 20, while clone 36A23 was active on AZCL carob galactomannan and AZCL barley β-glucan. The functional annotation of their sequences highlighted original metagenomic loci originating from bacteria of the Bacteroidetes/Chlorobi group, involved in the metabolization of mannosides and β-glucans thanks to a complete battery of endo- and exo-acting glycoside hydrolases, esterases, phosphorylases and transporters.

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Section: Discussionsupporting

confidence: 92%

Two new gene clusters involved in the degradation of plant cell wall from the fecal microbiota of Tunisian dromedary

et al. 2018

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“…Bactrian camels inhabit areas with arid, cold climates (long, cold winters and short summers) in Mongolia. These areas have scarce water sources and sparse vegetation, and the diets of camels in these regions are relatively simple [36]. At present, Mongolian camels have not been identified, apart from one breed.…”

Section: Resultsmentioning

confidence: 99%

Effects of Geographic Region on the Composition of Bactrian Camel Milk in Mongolia

Xiao

Orgoldol

et al. 2019

Animals

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SummaryCamels are known to occupy arid and desert countries. These pastoralist areas and conditions make it difficult to estimate camel milk production. Camel milk is considered to have anti-cancer, hypo-allergic and anti-diabetic properties. A high content of unsaturated fatty acids contributes to its overall dietary quality. The low quantity of β-casein and the lack of β-lactoglobulin are linked to the hypo-allergic effect of camel milk. Although the Bactrian camel is an important domestic animal in Mongolia, few studies have focused on Bactrian camel milk in this country. Our study characterizes the amino acid and fatty acid compositions of Bactrian camel milk collected from several geographical areas in Mongolia. The findings establish a theoretical basis for additional studies on the composition of milk from Bactrian camels in Mongolia.AbstractCamel milk is considered as an essential source of nutrition for desert people. However, few studies have investigated how geography affects Bactrian camel milk in Mongolia. In this study, we evaluated the differences in gross composition, fatty acid composition, and amino acid composition among Bactrian camel milk samples collected from 102 Bactrian camels in five different Mongolian regions. The proportion of long-chain fatty acids, out of total fatty acids, was high in all samples of Bactrian camel milk. The primary fatty acids detected in the samples were palmitic acid (23.99–30.72%), oleic acid (17.21–24.24%), and stearic acid (11.13–16.49%), while the dominant amino acids were leucine, lysine, valine, and aspartic acid. Cysteine was the least common amino acid detected in the Bactrian camel milk samples. Considerable differences in the fatty acid and amino acid compositions were observed among Bactrian camel milk from different regions of Mongolia. The findings suggest that geography strongly affects the composition of camel milk.

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“…Another phyla Deinococcus-Thermus decomposed high-molecular-weight organic matter such as starch, cellulose, proteins, xylan, and chitin [22].…”

Section: Discussionmentioning

confidence: 99%

Relationships among bedding materials, bedding bacterial composition and lameness in dairy cows

Wang

et al. 2021

Anim Biosci

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Bedding materials directly contact hooves of dairy cows and they may serve as environmental sources of lameness-associated pathogen. However, the specific composition of bacteria hidden in bedding materials is still not clear. The aim of this study was to detect the bedding material and its bacterial composition on lameness of Holstein heifers. Methods: Forty-eight Holstein heifers with similar body weights were randomly assigned into three groups including sand bedding (SB), concrete floor (CF), and compost bedding (CB). Hock injuries severity and gait performance of dairy cows were scored individually once a week. Blood samples were collected at the end of the experiment and bedding material samples were collected once a week for Illumina sequencing. Results: The CF increased visible hock injuries severity and serum biomarkers of joint damage in comparison to SB and CB groups. Besides, Illumina sequencing and analysis showed that the bacterial community of CB samples had higher similarity to that of SB samples than CF samples. Bacteria in three bedding materials were dominated by gastrointestinal bacteria and organic matter-degrading bacteria, such as Actinobacteria, Firmicutes and norank JG30-KF-cM45. Lameness-associated Spirochaetaceae and Treponeme were only detected in SB and CB samples with a very low relative abundance (0~0.08%).

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Comparative analysis of fecal microbial communities in cattle and Bactrian camels

Cited by 21 publications

References 21 publications

Two new gene clusters involved in the degradation of plant cell wall from the fecal microbiota of Tunisian dromedary

Two new gene clusters involved in the degradation of plant cell wall from the fecal microbiota of Tunisian dromedary

Effects of Geographic Region on the Composition of Bactrian Camel Milk in Mongolia

Relationships among bedding materials, bedding bacterial composition and lameness in dairy cows

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