Host genetic control on rumen microbiota and its impact on dairy traits in sheep

Table 1 Environmental effects included in the animal models for operational taxonomic units (OTU) and dairy traits

Trait	DIM	Year	Year lactation	Litter size	Year run	Total sequences	Year time: order	Test-day
OTU^a	ns	88%	23%	ns	44%	15%	44%
Milk yield	†	†	ns	ns
Fat content	†	†	†	ns
Protein content	†	†	ns	†
Milk proteins^b	†	†	ns	†
Milk FA^b	†	†	†	†
LSCS	ns	ns	ns	†				†
CV milk	ns	†	ns	†				†

DIM days in milk, Year lactation number of lactation nested within year, Year run run of sequencing nested within year, Total sequences number of total sequences per DNA sample, Year time order sampling order nested in rumen sampling time and year, FA fatty acids, LSCS lactation somatic cell score, CV milk coefficient of variation in milk production
^aPercentage of OTU with a significant effect
^bEach model for milk protein and fatty acids includes at least one of the environmental effects
†: The effect is included in the model; ns: the effects are non-significant; blank cell: the effect is not tested

ISSN: 1297-9686