Experimental design and subject details
Method details
Quantification and statistical analysis
Utilization of primer sets derived microbiome data in the statistical analysis
Converting OBITools intermediate fasta files to QIIME ready format
Clustering of microbial marker gene amplicon sequences and picking representative de novo species OTU
Assigning taxonomy to OTU
Creation of OTU tables and sample subsetting and subsampling
Correlating microbial domain cell count
Correlating microbial domain cell counts to experimental variables
Correlating microbial domain richness to experimental variables
Prediction of phenotypes and other experimental variables by core microbiome
Prediction of phenotypes by core microbiome while correcting for diet
Prediction of phenotypes by diet components
Prediction of phenotypes and other experimental variables by core microbiome using RF
Bovine genotype quality control
Testing association of the global rumen prokaryotic core with host genetics
Creation of genetic relationship matrix
Heritability estimation
Heritability confidence interval estimation
Bovine genome SNPs—Microbe association effort
Estimating kinship matrix
Genomic prediction
Associating microbes’ abundance with experimental variables
Inference of microbial interaction network within domains
Inference of interdomain microbial network
Comparing phylogenetic relatedness of core prokaryotic microbes to random sampling
Examining core and trait-related microbiome for taxonomic enrichment
Comparing heritable microbes to other core miocrobes’ ability to explain experimental variables
In each farm, core microbes were corrected for diet. Thereafter, the samples in the farm were partitioned into two groups, winter (fall equinox to spring equinox) and summer (spring equinox to fall equinox). Then, each microbial OTU abundance was compared using Wilcoxon rank-sum test that was used to test for the difference between the abundance of the given OTU between the two seasons, followed by a multiple comparison correction using the Bonferroni method. Core microbial OTUs with corrected P < 0.05 in at least one farm were considered as showing a seasonal association.